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310-065 exam Dumps Source : Sun Certified Programmer for the Java 2 Platform.SE 6.0

Test Code : 310-065
Test title : Sun Certified Programmer for the Java 2 Platform.SE 6.0
Vendor title : SUN
: 305 actual Questions

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SUN Sun Certified Programmer for

Kyoto school, Teaming with 2 japanese corporations, Acquires World-First Certification for wireless communique Specification Wi-sun FAN | killexams.com actual Questions and Pass4sure dumps

KYOTO, Japan, Feb. 6, 2019 /PRNewswire/ -- instant instruments geared up with the unusual overseas instant conversation specification Wi-solar FAN (field enviornment network) for the internet of things developed collectively by the research community of Professor Hiroshi Harada of the Graduate faculty of Informatics, Kyoto university (hereinafter Kyoto school), Nissin methods Co., Ltd. (hereinafter Nissin methods), and ROHM Co., Ltd. (hereinafter ROHM) grew to become one of the world's first options to achieve Wi-solar FAN certification.

BackgroundIn order to realize out of doors communication networks such as sensible cities and sensible grids, exceptional, lengthy-distance and relaxed community expertise is required. Wi-solar FAN is a brand unusual specification of Wi-sun, an international radio communications undertaking this is the most useful suited to the development of IoTs. it is an interoperable communications networking approach for electricity, fuel, and water metering, as well as for judicious cities and smart grids in a considerable number of functions similar to infrastructure and shrewd transport methods.

This Wi-solar FAN is an interoperable low-vigor IoT wireless communique expertise that makes expend of low-vigour wireless transmission expertise in keeping with the IEEE 802.15.4g typical and multistage routing know-how based on IPv6. On may 16, 2016, the Wi-sun Alliance, which certifies instant verbal exchange requirements for IoTs, technical compatibility, and interconnectivity, established generic specifications, and on November 11, 2016, the three parties announced that they succeeded in fundamental radio traits suitable with Wi-solar FAN. The Wi-solar Alliance then introduced its Wi-solar FAN certification software on October 3, 2018.

This achievementBased on the results of the simple development of Wi-solar FAN, the three parties developed a radio compatible with Wi-sun FAN technical specifications and certification software, and passed an IP-primarily based certification explore at various the expend of multi-hop, frequency-hopping, and superior certification safety through the expend of a plurality of different radios from different organizations. This radio has here features as described in the Wi-sun FAN Technical specifications.

  • physical layer and MAC layer akin to IEEE 802.15.four/4g/4e required for operation in Japan
  • Adaptation layer, community layer, and transport layer based by using IETF such as 6LowPAN and IPv6 
  • Multi-hop communique system using RPL 
  • Frequency hopping 
  • RADIUS/AAA high-degree security 
  • Multi-supplier interconnectivity
  • p>With the IEEE802.15.four/4g/4e applied sciences in a position to superior transmission over 1km below the eastern rules, this radio is equipped with an international typical for information superhighway entry, which has been added in Wi-Fi (TM) systems, and a multi-hop overseas typical that realizes multi-stage relay between radios in accordance with IP. This makes it convenient to connect sensors, meters, and screens that consequence up sensible cities and judicious metering to the web.

    This fulfillment turned into carried out in the Impulsing Paradigm trade via Disruptive applied sciences program (have an consequence on) led by the Council for Science, know-how and Innovation, the cabinet workplace. This application was fashioned by means of a joint business-academia consortium referred to as the subsequent-technology Wi-sun Joint analysis Consortium, Kyoto. The three events, primarily based in Kyoto, are Kyoto institution, which believe a track listing of standardization and structure of IEEE 802.15.4/4g/4e, Nissin systems, which commercializes Wi-sun-compatible communication middleware, and ROHM, which develops communication modules compatible with the common.

    outline of certification acquisition:Date and time of certification acquisition: January 30, 2019Certification authority: Wi-sun AllianceCertified trying out laboratory: Allion Labs, Inc.Certification quantity: WSA 0171

    Future developmentIn the long run, the three events will recall portion in an interoperability specification verification event subsidized with the aid of the Wi-solar Alliance to consequence contributions to checking out for technical conformity and interoperability of the Wi-sun FAN normal, and to promote additional development as industry-academia cooperation projects in Kyoto in an effort to implement this radio in society. The effects believe been additionally displayed at the Wi-sun Alliance booth in DistribuTECH 2019, the greatest vigour industry-linked event within the u.s., which changed into held in unusual Orleans on February 5.

    further details are available at:http://www.dco.cce.i.kyoto-u.ac.jp/en/PL/PL_2019_01.html

    View original content:http://www.prnewswire.com/news-releases/kyoto-institution-teaming-with-2-jap-businesses-acquires-world-first-certification-for-wireless-conversation-specification-wi-sun-fan-300790447.html

    source Kyoto school; Nissin methods Co., Ltd.; ROHM Co., Ltd.

    Copyright (C) 2019 PR Newswire. every sole rights reserved


    Landis+Gyr Helps Lead Wi-sun Alliance's FAN Certification program for significant Scale IoT communique Networks | killexams.com actual Questions and Pass4sure dumps

    ATLANTA, Oct. 1, 2018 /PRNewswire/ -- Landis+Gyr (SWISS: LAND.SW) announced its back for the Wi-sun FAN Certification application launched by means of the Wi-solar Alliance previous nowadays.  As a Promoter Member of the Wi-sun Alliance that holds a Board of administrators position, Landis+Gyr joins different member groups in promoting the implementation of open, requirements-primarily based bailiwick belt network (FAN) and the cyber web of things (IoT).

    Utilities believe utilized bailiwick enviornment networks to supply coverage for speaking assets akin to smart meters, sensors and automation instruments throughout their provider territory. With the expand in judicious metropolis purposes, typical requirements for FAN connectivity will develop the selections accessible for functions and devices able to subsist a portion of the community.

    Wi-solar's FAN Certification program will provide compliance testing of community accessories and contraptions to a communications profile developed from applicable open standards and certify the product's means to interoperate.

    "Landis+Gyr strongly supports this certification effort for the long race cost it'll add for utility grid modernization and IoT programs," stated Marius Chilom, Senior vice president and Chief expertise Officer of solutions for Landis+Gyr. "The greater the interoperability, the extra advantageous these networks could subsist for the next wave of sensible grid and smart metropolis functions."

    "Certification ensures interoperability, which is essential to the boom of IoT innovation," stated Phil Beecher, President and CEO, Wi-solar Alliance. "we're fortunate to formally launch the FAN Certification software and are excited for the first wave of FAN-licensed products to subsist deployed into the market genesis Q1 2019."

    The certification software will consequence positive utilities, cities and service suppliers believe entry to adaptable, multi-service networks that will aid ensure interoperability into the long run. other key merits for network operators consist of: 

  • simpler comparison of unusual items, as habits, efficiency and interoperability are neatly-described.
  • extra alternative of items and providers.
  • Encourages international structure of requirements-based mostly items, cutting back the possibility and dear influence of stranded property.
  • All Wi-sun licensed products are rigorously established by means of a Wi-sun appointed third-party explore at various lab to consequence positive the contraptions travail collectively quite simply and securely for rapid time to market. certified gadgets consist of a digital certificates to authenticate entry to a Wi-sun FAN, vastly reducing vulnerability to cyber safety threats. under a separate contract, Wi-sun Alliance has appointed GlobalSign because the third-party service provider of digital certificates for the Wi-solar FAN certification application.

    About Landis+GyrLandis+Gyr is the leading global company of integrated energy management solutions for the utility sector. providing one of the crucial broadest portfolios of items and functions to wield involved industry challenges, the company gives you comprehensive options for the foundation of a wiser grid, including judicious metering, distribution community sensing and automation equipment, load control, analytics and energy storage. Landis+Gyr operates in over 30 international locations across five continents. With income of about USD 1.7 billion, the industry employs c. 6,000 americans with the only actual mission of assisting the realm control power more desirable. extra tips is available at www.landisgyr.com.

    concerning the Wi-solar AllianceThe Wi-solar Alliance is a worldwide non-profit member-primarily based association made of industry leading organizations. Its mission is to compel the world proliferation of interoperable instant options to subsist used in judicious cities, sensible grids and different cyber web of things (IoT) applications the expend of open world standards from companies, such as IEEE802, IETF, TIA, TTC and ETSI. With more than a hundred and eighty contributors global, membership of the Wi-solar Alliance is open to every sole industry stakeholders and contains silicon carriers, product providers, features suppliers, utilities, universities, companies and municipalities and local executive groups.For more guidance, please debate with: www.wi-solar.org.

    Wi-sun Alliance and the Wi-solar Alliance emblem are trademarks of the Wi-sun Alliance.

    Cision View long-established content material:https://www.prnewswire.com/news-releases/landisgyr-helps-lead-wi-solar-alliances-fan-certification-program-for-tremendous-scale-iot-communication-networks-300721548.html

    source Landis+Gyr


    Wi-solar Launches FAN Certification program For massive-Scale, outside IoT Networks | killexams.com actual Questions and Pass4sure dumps

    Paves how to accelerate up IoT conclusion gadget Interoperability

    SAN RAMON, Calif., Oct. 1, 2018 /PRNewswire/ -- The Wi-solar Alliance, a world ecosystem of member organizations searching for to accelerate the implementation of open specifications-primarily based bailiwick enviornment Networks (FAN) and the information superhighway of things (IoT), these days announced its FAN Certification application. FAN is a communications infrastructure for terribly big-scale networks. In the equal means you expend the internet on a smartphone or desktop, a container enviornment community lets instruments interconnect onto one typical community.

    the provision of the FAN Certification software is the consequence of the vision, collaboration and dedication of a number of Wi-solar Member businesses. in the course of the certification program, the Wi-solar Alliance certifies products in keeping with their compliance to a communications profile derived from apropos open specifications and their capability to interoperate with different Wi-sun licensed products.

    The FAN Certification software will certify contraptions for expend through utilities, city developers and other carrier suppliers to simplify and assist massive-scale, outside networks for judicious cities, smart utilities and other IoT rollouts – and to aid reduce charges and delays. Wi-sun members procedure to broadcast licensed items in q4 2018.

    Proprietary programs are no longer sufficiently flexible, or as low cost as options in keeping with open specifications, and may swirl into much less valuable within just a few years. Adhering to the Wi-solar FAN profile in accordance with open IEEE and IETF specifications makes it viable for provider suppliers, sensible cities and utilities to installation adaptable multi-carrier networks and will aid consequence unavoidable interoperability, not simplest these days, however additionally for many years to attain back.

    "Wi-sun is soundless at the forefront of IoT innovation, and as cities, utilities and the trade grows their IoT networks, they are more and more recognizing that industry-broad open necessities are simple for interoperability and scalability," says Phil Beecher, President and CEO of the Wi-sun Alliance. "FAN Certification is an endorsement for governments and the trade that their individuals' products are compliant to these open standards, and safeguards exceptional, interoperability, security, scalability – and eventually gives shoppers a aggressive expertise."

    Key merits of FAN Certification consist of:

  • presents utilities, cities and service providers adaptable multi-service networks so as to aid consequence positive interoperability nowadays and for future generations.
  • Reduces the time needed to evaluate unusual items, as behavior, efficiency and interoperability are smartly described.
  • Eliminates single-dealer lock-in.
  • Encourages the development of a world ecosystem of requisites-based products, cutting back the desultory and expensive believe an repercussion on of stranded belongings.
  • All Wi-sun certified items are fastidiously verified by using an authorized Wi-solar appointed third-celebration test lab to subsist unavoidable the contraptions travail collectively readily and securely for rapid time to market. certified devices encompass a digital certificates to authenticate entry to a Wi-sun FAN network, tremendously cutting back vulnerability to cyber security threats. under a separate settlement, Wi-solar has chosen GlobalSign to supply certificate Authority (CA) functions to Wi-solar Alliance member companies.

    Third birthday celebration feedback:

    Alex Davies, Senior Analyst, Rethink technology research and Editor of climb up: "Open requisites are one of the greatest how you can subsist positive mass adoption of a expertise. As with WiFi and the 3GPP mobile protocols, Wi-solar's FAN is delivering diverse selections for machine and expertise suppliers to facilitate customer interest. energy suppliers and grid operators are worried about seller lock-in, notably because of the long being cycles of their deployments. To this end, Wi-sun should give an retort to their mission-critical problems that different LPWAN alternatives can't. It opens the door for them to extend into different IoT markets, with sensible cities an colossal chance."

    Iker Urrutia, manager, judicious Grids, Avangrid: "IoT networking options in line with open specifications and authorized to the Wi-solar FAN profile can subsist essential in acquiring proper interoperability for utility purposes, corresponding to AMI, accelerating the digitization of the grid in a cost useful means."

    Colton Ching, Senior vice chairman of Planning & know-how at Hawaiian electric: "We continue to peer Wi-solar expertise as a huge enabler for significant-scale IoT functions during Hawaii with the supply of its FAN Certification software. The Wi-solar Alliance and its members believe taken an incredible step forward in bringing multi-dealer, interoperable solutions to fruition." 

    FAN Certification Availability: The FAN Certification software has been developed through the collaboration of Wi-solar member businesses, including product carriers and collaborators participating in interoperability routine to display the requirements and certification check program. the following are amongst probably the most groups who were actively main a way to certification: Analog contraptions, Cisco, EPRI, Itron, Kyoto school/Nissin programs, Landis+Gyr, ProCubed, Renesas and ROHM Europe.

    To learn greater about a way to achieve up your items to subsist certified, please quest advice from http://www.wi-sun.org

    ensuring a product is compliant will likewise subsist involved so the Wi-solar Alliance is keen to aid and address any considerations. please join Wi-sun for an upcoming webinar on Oct 16, 2018 at 8AM PT. during this webinar they are able to deliver a top flat view of the import of certification and how to navigate the procedure to obtain FAN Certification. For more counsel and to register please click on here https://attendee.gotowebinar.com/register/9187903284805872385.

    concerning the Wi-solar AllianceThe Wi-solar Alliance is a world non-earnings member-based mostly association made of trade leading businesses. Its mission is to power the world proliferation of interoperable instant solutions to subsist used in smart cities, judicious grids and different web of issues (IoT) applications using open world requirements from agencies, comparable to IEEE802, IETF, TIA, TTC and ETSI. With greater than 180 members international, membership of the Wi-solar Alliance is open to every sole industry stakeholders and includes silicon companies, product vendors, features suppliers, utilities, universities, agencies and municipalities and autochthonous government businesses.

    For extra suggestions, please debate with: www.wi-sun.org.

    Wi-sun Alliance and the Wi-sun Alliance logo are emblems of the Wi-solar Alliance.

    linked links

    http://www.wi-sun.org

    source Wi-solar Alliance


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    Anatomy of a Java Finalizer | killexams.com actual questions and Pass4sure dumps

    A yoke of patterns that could occasions Java bank exhaustion were identified from years of research at IBM. One gripping scenario was observed when Java applications generated an extravagant amount of finalizable objects whose classes had non-trivial Java finalizers.

    What Is a Java Finalizer?A Java finalizer performs finalization tasks for an object. It's the opposite of a Java constructor, which creates and initializes an instance of a Java class. A Java finalizer can subsist used to discharge postmortem cleanup tasks on an instance of a class or to release system resources such as file descriptors or network socket connections when an protest is no longer needed and those resources believe to subsist released for other objects. You don't exigency any argument or any return value for a finalizer. Unfortunately the current Java language specification does not define any finalizers for a Java class or interface when a class or interface is unloaded. Let's recall a closer explore at finalize() mode of java.lang.Object that provides an instance method, finalize() for finalization:

    protected void finalize() throws Throwable

    When a Java protest is no longer needed, the space occupied by the protest is supposititious to subsist recycled automatically by the Java garbage collector. This is one of the significant differences in Java and is not organize in most structural programming languages fancy C. If an instance of a class implements the finalize() method, its space cannot subsist recycled by the garbage collector in a timely fashion. Worst case, it may not subsist recycled at all.

    Any instances of classes that implement the finalize() mode are often called finalizable objects. They will not subsist immediately reclaimed by the Java garbage collector when they are no longer referenced. Instead, the Java garbage collector appends the objects to a special queue for the finalization process. Usually it's performed by a special thread called a "Reference Handler" on some Java Virtual Machines. During this finalization process, the "Finalizer" thread will execute each finalize() mode of the objects. Only after successful completion of the finalize() mode will an protest subsist handed over for Java garbage collection to accumulate its space reclaimed by "future" garbage collection. I did not convey "current," which means at least two garbage collection cycles are required to reclaim the finalizable object. Sounds fancy it has some overhead? You got it. They exigency several shots to accumulate the space recycled.

    Finalizer threads are not given maximum priorities on systems. If a "Finalizer" thread cannot preserve up with the rate at which higher priority threads occasions finalizable objects to subsist queued, the finalizer queue will preserve growing and occasions the Java bank to fill up. Eventually the Java bank will accumulate exhausted and a java.lang.OutOfMemoryError will subsist thrown.

    A Java Virtual Machine will never invoke the finalize() mode more than once for any object. If there's any exception thrown by the finalize() method, the finalization of the protest is halted.

    You are free to conclude virtually anything in the finalize() mode of your class. When you conclude that, please conclude not expect the remembrance space occupied by each and every protest to subsist reclaimed by the Java garbage collector when the protest is no longer referenced or no longer needed. Why? It is not guaranteed that the finalize() mode will complete the execution in timely manner. Worst case, it may not subsist even invoked even when there are no more references to the object. That means it's not guaranteed that any objects that believe a finalize() mode are garbage collected. That's a potential hazard from a remembrance management perspective and, needless to say, there is considerable overhead for queuing, dequeuing, running the finalize() method, and rescanning the protest in the next garbage collection cycle.

    If you want to race cleanup tasks on objects, consider finalizers as a ultimate swirl and implement your own cleanup method, which will subsist more predictable. It's very risky to reckon on finalizers for postmortem cleanup tasks, especially if your finalizable objects believe references to autochthonous resources.

    Hands-on suffer with Java FinalizerWe can easily simulate this scenario with a yoke of test applications and recall a explore at dumps and traces to remark what's happening inside of the Java bank and threads for hands-on experience.

    Let's build a yoke of Java classes to recreate typical scenarios.

    In ObjectWYieldFinalizer, they can implement the mode finalize() with Thread.yield() so that finalize() cannot complete its execution (see Listing 1) (Listings 1-7 can subsist downloaded here.)

    The Thread.yield() mode prevents the currently executing thread from running and allows other threads to execute. If the Finalizer thread calls this finalize() method, it will recess its execution.

    In ObjectWExceptionFinalizer, the finalizer() mode immediately throws a java.lang.IndexOutOfBoundsException. If the Finalizer thread calls this finalize() method, the protest finalization won't subsist completed because of the exception and there's no second desultory to race the finalize() mode (see Listing 2).

    In ObjectWEmptyFinalizer, they don't implement any code in the finalize() mode (see Listing 3). ObjectWOFinalizer doesn't believe any finalize() mode (see Listing 4).

    Let's race each of the classes to remark what happens. Sun's Java Virtual Machine (JVM) can subsist used with the following options for the class TestObjectWYieldFinalizer.

    /sun1.6.0_10/bin/java -Xmx50m -verbosegc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC -XX:+HeapDumpOnOutOfMemoryError TestObjectWYieldFinalizer > verbosegc.txt

    It looks very complicated. Why conclude they exigency those command-line options? Well, without those options, they only accumulate a dinky information about Java garbage collection activities fancy this:

    [Full GC 50815K->45644K(50816K), 0.2276940 secs][Full GC 48780K->46415K(50816K), 0.2233279 secs][Full GC 49551K->49551K(50816K), 0.2396315 secs][Full GC 50815K->50815K(50816K), 0.1886312 secs][Full GC 50815K->49219K(50816K), 0.1964926 secs][Full GC 50815K->50815K(50816K), 0.1865343 secs][Full GC 50815K->50815K(50816K), 0.1836961 secs]

    We only accumulate a character of garbage collection (Full GC), total Java bank usage before garbage collection (50,815K), total Java bank usage after garbage collection (45,644K), a tall watermark of total Java bank (50,816K), and time spent in the garbage collection (0.2276940 secs).

    High watermark is the size of the current Java heap. The Java bank can expand its size up to a maximum size or constrict to manage Java bank effectively.

    The -XX:+PrintGCDetails option lets the JVM provide information on each generation in the Java heap.

    We can remark Java bank usage and the time (in seconds) spent in Java garbage collection of each unusual generation, tenured generation, and permanent generation with the -XX:+PrintGCDetails option in the following example:

    [GC [DefNew: 3520K->3520K(3520K), 0.0001143 secs][Tenured: 43897K->47295K(47296K), 0.2110999 secs] 47417K->47415K(50816K), [Perm : 17K->17K(12288K)], 0.2115593 secs][Times: user=0.22 sys=0.00, real=0.22 secs]

    In tenured generation, Java bank usage was 43,897KB before this Java garbage collection. Java bank usage reached 47,295KB after Java garbage collection; 47296K is the size of the tall watermark of the tenured generation; 0.2110999 second was spent to collect the tenured generation. Unfortunately they conclude not remark the maximum size of each generation with the -XX:+PrintGCDetails option alone.

    With -XX:+PrintGCTimeStamps, they can accumulate a timestamp for each garbage collection fancy this:

    1.393: [GC 1002K->106K(5056K), 0.0001036 secs]

    This garbage collection started 1.393 seconds after the JVM started.

    The -XX:+PrintHeapAtGC option provides extensive information about each Java garbage collection (see Listing 5).

    We can even remark the address purview of each generation. Unfortunately there's no timestamp for each garbage collection with -XX:+PrintHeapAtGC option alone.

    The ultimate option, -XX:-HeapDumpOnOutOfMemoryError allows the JVM to dump the Java bank to a file when an allocation from the Java bank cannot subsist satisfied or a java.lang.OutOfMemoryError is thrown. This option was introduced in Sun Java 1.4.2 update 12 and Sun Java 5.0 update 7.

    If you want to experiment with IBM's Java Virtual Machine, every sole you exigency is a -verbosegc command-line option. You conclude not exigency any of these: -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC, or -XX:+HeapDumpOnOutOfMemoryError.

    Let's recall a explore at what happened to the class while they talked about Sun JVM's command-line option. We've got java.lang.OutOfMemoryError from TestObjectWYieldFinalizer:

    Exception in the thread "main" java.lang.OutOfMemoryError: Java bank spaceat java.lang.ref.Finalizer.register(Finalizer.java:72)at java.lang.Object.<init>(Object.java:20)at ObjectWYieldFinalizer.<init>(ObjectWYieldFinalizer.java:2)at TestObjectWYieldFinalizer.main(TestObjectWYieldFinalizer.java:11)

    "java.lang.OutOfMemoryError: Java bank space." That means they got Java bank space exhaustion. The JVM could not designate any more Java bank while running the mode java.lang.ref.Finalizer.register(), which is on line 72 of Finalizer.java. Finalizer.java? Of course, they did not write Finalizer.java. That's a portion of the JVM. They can likewise check verbosegc.txt to which they redirected the garbage collection trail (see Listing 6).

    About 3.711 seconds after the JVM started, they got java.lang.OutOfMemoryError. The Java bank dump is written to pid124.hprof.

    Analysis of Java Garbage Collection TracesWe can expend a appliance to dissect this trace. The IBM Pattern Modeling and Analysis appliance for Java Garbage Collector (PMAT) is one of top five technologies at alphaWorks. I believe implemented patented algorithms to call future failures related to Java bank exhaustion in this tool. please refer to United States Patent No. 7,475,214 if you are interested in the algorithms. Although they don't exigency these algorithms to investigate simple problem fancy this, you might subsist able to find situations where you could accumulate some insight from fortune tellers. They can accumulate a copy of the appliance here.

    PMAT parses verbose garbage collection (GC) trace, analyzes Java bank usage, and recommends viable solutions based on pattern modeling of Java bank usage.

    The following features are included:

  • GC analysis
  • GC table view
  • Allocation failure summary
  • GC usage summary
  • GC duration summary
  • GC graph view
  • GC pattern analysis
  • Zoom in/out/selection/center of chart view
  • The appliance can likewise parse Sun's Java garbage collector traces, including the following:

  • Serial collector
  • Throughput/parallel collector
  • Concurrent collector
  • Incremental/train collector
  • We can start version 3.2 of the appliance with a jar file in the download package. (V3.2 was the latest version when this article was written.)

    # /usr/java5/bin/java -Xmx200m -jar ga32.jar

    The appliance provides a headless mode but let's bring up the graphical user interface mode for effortless demonstration. They can click on the "N" icon to open Sun's trail file. They can click on "I" for IBM's trail file as seen in motif 1.

    We can remark in motif 2 the analysis result and recommendation virtually instantly.


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    Main Features:- Over 200 character Java 2 Platform.SE6.0 questions, covers every sole the SCJP exam topics- 'Mock Test' module, recall simulation tests as many times as you want, the size of each test can subsist adjusted- A running timer and visual progress bar aid to monitor your test progress- capacity to redeem any simulation test as you want and restore it entirely, resume exactly from where you left- capacity to display the status of every sole the test records, Great way to display your learning progress- capacity to delete a test record- Powerful test report. When you finish a test, the test report report will not only display your score but enable you to review each question individually or review every sole the incorrect questions together- 'Self Study' module, free to elect any number of questions to study, you can practice questions and review answers at your own pace- In 'Self Study' module, study progress can subsist saved and resumed anytime anywhere you want- In 'Self Study' module, every sole incorrect answered questions are automatically selected for your later review- 'My decrepit Area' module is designed to aid preserve track of questions that you find difficult so that you can target your decrepit areas. You can bookmark any question to 'My decrepit Area' module or remove it as you want.- capacity to generate randomly ordered test or study

    Usage:- To delete a test record in 'Mock Test' module, just slither over a record, and you will remark a delete button.- Initially, 'My decrepit Area' module is empty, you exigency to add questions through reviewing questions. In question review mode(After you finish a test, you can enter this mode by tapping a question in test report), you can add any question by tapping 'Bookmark' button.

    (This product is not endorsed, sponsored or affiliated with Sun Microsystems, Inc. SCJP are trademarks or registered trademarks of Sun Microsystems, Inc. and/or its affiliates in the United States and other countries.)


    Comparing the Technologies | killexams.com actual questions and Pass4sure dumps

    Language and Runtime Support

    Java. Developed in 1995 by Sun. every sole code is compiled into bytecode and interpreted by a virtual machine (JVM). May likewise subsist selectively JIT compiled, depending on the JVM, or fully natively compiled with ancillary products (such as JOVE). Can race on any platform that supports a JVM. IBM supports v1.3 of the J2SE SDK.

    VBScript and JScript for Web pages and any COM-based language for server components (typically VB or VC++). Scripts are interpreted, while components are natively compiled. VB code likewise requires a runtime DLL (MSVBMxx.DLL). VBScript and JScript came into expend in 1997, while COM grew out of OLE in 1993.

    Any language that supports the Common Language Runtime (20-plus in development). Initially compiled to an intermediate language (MSIL) and then JIT compiled to autochthonous code by the CLR at runtime or natively compiled (PreJit) at install time. Code written for the CLR is referred to as managed code. back for the CLR will subsist shipped with future OSes starting with Windows XP Server released by the quit of 2001.

    Class Libraries

    Standard Java classes organize in the J2SE, plus the APIs (JDBC, JSP, EJB, JMS, JAXP, JCA, JFC, JNDI, and so on, as defined in the J2EE specification). In addition, vendors include their own extensions to J2EE for integration and differentiation in the marketplace.

    Win32, COM, MFC, ATL, and ASP. Five primary programming models that accommodate APIs that developers expend in structure solutions.

    Services Framework. A hierarchical set of managed classes arranged in namespaces. Provides a consistent programming model and unifies the APIs needed to build solutions.

    Deployment

    Java Package. Collection of Java classes assembled as a unit and arranged hierarchically. decrepit versioning. Server-based deployment uses XML-based deployment descriptors, which are read and handled differently by each vendor's implementation. WebSphere includes an application assembly appliance to wield this process.

    DLL, EXE. DLLs accommodate a collection of functions with decrepit versioning. EXEs depict an executable program with decrepit versioning. COM components are housed in DLLs, reckon on the registry, and back immutable interfaces but no runtime version checking. Server-based installation accomplished through third-party utilities such as InstallShield.

    Assembly. Unit of deployment, security, and versioning. Includes built-in PKI back and metadata to tightly control binding of assemblies at runtime. back exists in the class loader of the CLR for consistency and version checking. Server-based deployment can subsist done in a no-impact style by simply copying the relative paths that accommodate the application. Applications likewise can explicitly partake components. back for the Windows Installer included in VS.NET.

    Thin Client

    Java Server Pages (JSP). WAS supports JavaScript or Java in JSPs that are compiled into HttpServlets on the coast and are cached by the server. No autochthonous back exists for different devices, and there are no client-state services other than cookies. WAS ships with an HTTP engine (1.3.19) but can expend Apache, Domino, Netscape, iPlanet, or IIS 4.0/5.0. WAS 4.0 is v1.1–compliant. The syntax of JSPs is a knockoff of ASP and was developed in 1998.

    Active Server Pages (ASP 2.0). Technology introduced by MSFT in 1997 in which pages containing server-side code are interpreted by an ISAPI server extension and can expend simple HTTP caching through headers. No autochthonous back exists for different devices, and there are no client-state services other than cookies. ASP runs primarily on IIS 4.0/5.0 but has been ported to other platforms (see Chili!Soft, purchased by Sun). Performance of JSP and ASP is similar on similar hardware platforms.

    ASP.NET. ASP.NET pages are compiled into MSIL either statically or on the coast when a request is made. Server control architecture allows abstraction for different devices and condition storage across HTTP POST events. Server controls allow developers to create "adaptive controls" to render HTML, WML, and so on as confiscate for the client platform. Runs on IIS 4.0/5.0. Beta performance tests witness a 200–300% improvement over JSP and ASP.

    Web Server Processing

    HttpServlets provide a request/response model available to Java classes in addition to session-state services keyed with a client cookie. JSPs often call servlets as the controller that acts as the broker between presentation and industry service layers to provide separation between the HTML and Java code. Because of the complexity of writing servlets many "two-tier Web apps" simply believe the servlets consequence direct calls to the underlying database via JDBC. This leads to spaghetti code that is difficult to debug and maintain. The servlet engine is included in WAS and includes a JDBC connection manager that handles database connection pooling. WAS 4.0 is v2.2–compliant.

    The ASP runtime implemented in the ISAPI server extension provides a request/response model in addition to session- (keyed with a client cookie) and application-state services. ASP pages often call industry services directly implemented as COM components, although many "two-tier Web apps" simply believe the ASP pages consequence direct calls to the database via ADO. This leads to spaghetti code that is difficult to debug and maintain.

    The HTTP Runtime in ASP.NET provides an extensible mechanism by which developers can hook into the processing of resources on the Web server through HTTP Modules. Provides very tight integration with the Web server. likewise supports a request/response model and application- and session-state services. Session-state services can subsist deployed on a separate server to expand scalability. Provides a sophisticated caching mechanism for pages and programming code. Provides complete separation of HTML code and programming logic through code behind.

    Object Services

    Enterprise Java Beans (EJB). portion of the original J2EE specification in 1998. Java classes that are deployed in component-oriented middleware (a container) that provides interception and adds services such as distributed transactions (using the Java Transaction Service [JTS] based on the OMG and using IIOP), security, and database connectivity. The container can race on the identical server or remotely. EJBs attain in two flavors: entity beans and session beans. Entity beans map to the condition of an protest as represented by a row in a database. Entity beans provide the mapping to the database and caching of the entity. Entity beans attain in two styles: Container Managed Persistence (CMP) and Bean Managed Persistence (BMP). CMP beans allow the container to manage loading and saving the database information, whereas BMP beans provide methods for the developer to insert JDBC code directly. Session beans attain in two flavors: stateful and stateless. Stateful beans maintain a conversation with a sole client, whereas stateless beans can subsist reused by multiple clients, with the container handling the allocation. WAS 4.0 is EJB 1.1–compliant.

    Microsoft Transaction Server (MTS). Provides component-oriented middleware for COM components introduced in 1996. Provides interception and adds distributed transactions through the Microsoft Distributed Transaction Coordinator service (MSDTC), security, and protest activation support. Objects can subsist both stateful and stateless, depending on administrative settings. Programmers recall edge of MTS services through the expend of an API. Only components built in VC++ are free-threaded and thus discharge better. No back for automatically mapping database rows to protest instances exists.

    Component Services (COM+ 1.0). Released with Windows 2000 in 2000 and provides component-oriented middleware for COM components. Provides interception and adds distributed transactions, security, protest construction, protest pooling, queued components (for asynchronous integration with MSMQ), loosely coupled events for publishing and subscribing to components, and activation support. Objects can subsist both stateful and stateless, depending on administrative settings. Although built for COM, .NET programmers create serviced components in .NET by deriving their class from a system class and decorate it with attributes to report the services that it uses. The system class then communicates with COM+ via Win32 and COM APIs. No back for automatically mapping database rows to protest instances exists. (The IMDB product that was removed from prerelease versions of COM+ would believe served a similar purpose as entity beans, although the ADO.NET DataSet protest serves a similar purpose.)

    Database Support

    JDBC. Data Access API that allows SQL access to a tabular data source via drivers (there are currently 159 listed on Sun's site under 4 different types, ranging from JDBC to ODBC bridges to fully native-protocol Java implementations). Various drivers back connection pooling, distributed transactions, and rowsets, and some are J2EE-certified. The API is similar to the Win32 implementation of ODBC. JDBC 2.0 is the spec under J2EE 1.2, but 3.0 has been defined. Note that when using entity beans with CMP, the container provides the mapping to the database tables through a vendor-specific mechanism. WAS 4.0 supports JDBC core v2.1 and Extensions 2.0. WAS includes providers for DB2, MSSQL, Oracle, Informix, and Sybase.

    ADO/OLE DB. OLE DB is both a specification for COM interfaces that database vendors implement (OLE Providers) and a set of services (such as cursor processing and connection pooling) implemented in Windows to provide data access to a variety of data sources. ADO is a simplified automation layer that sits on top of OLE DB to provide data access to scripting languages and COM-based languages such as VB. Although typically used for tabular data access, both ADO and OLE DB can subsist used to access nonstructured data such as email and XML. OLE DB likewise can subsist used to access data through the plethora of available ODBC drivers.

    ADO.NET. A set of managed classes that provides access to data sources through what are called managed providers. These include TDS (SQL Server), OLE DB providers, and ODBC drivers. Each managed provider implements connections and connection pooling, commands/parameters, forward-only cursor processing, transaction processing, and mistake handling. ADO.NET likewise includes a middle-tier data cache protest called a DataSet that provides an XML-based cache of data that can subsist used to bind to controls and synchronize changes to a data source through an adapter protest implemented by the managed provider. Designed to back a loosely connected model with built-in XML representation of the data and XSD representation of the schema. Developers can travail with relational data as XML data, and vice versa through the XMLDataDocument class.

    Messaging

    Java Messaging Services (JMS). JMS is a set of client interfaces to message-oriented middleware (MOM) products that supports both message queues and publish-and-subscribe metaphors. MOM vendors implement JMS providers. JMS includes a specification for a unusual character of EJB, message beans. WAS includes the (WebSphere MQ) MQSeries JMS provider. WAS 4.0 is compliant with the 1.0.2 specification and includes back for JMS-XA distributed transactions across MQSeries-enabled systems and databases. exigency to obtain WebSphere MQ separately.

    Microsoft Message Queue Server (MSMQ). A MOM server product running on NT 4 and W2K that supports message queues but does not include a publish-and-subscribe feature built into the product. The product includes a COM-based API for sending and receiving messages and administering queues. Supports distributed transactions through MSDTC. MSMQ is built into Windows NT 4.0 Server.

    System.Messaging. A set of managed classes that provide the administrative and client APIs for working with MSMQ servers. MSMQ is built into Windows 2000 Server. It should subsist eminent that developers can access MSMQ through queued components (QC) supported by COM+ 1.0. QC acts as an abstraction layer to allow clients to asynchronously consequence mode calls on components that are backed by MSMQ.

    Fat Client

    Java Foundation Classes (JFC). JFC includes the Abstract Windowing Toolkit (AWT) and oscillate as Java APIs for structure GUII applications. oscillate is a more abstract API and includes a "look and feel" for developing the identical GUI on multiple platforms or adhering to a platform standard. Advanced graphics can subsist created with the Java2D and 3D APIs. GUI apps race as standalone applications or applets running in a browser.

    Win32/ActiveX. Applications written in VB, VC++, or other Windows development tools. Ultimately these tools consequence calls to the Win32 API for the underlying window management. ActiveX is a COM-based technology for structure reusable binary visual components (.ocx) across development environments. Applications race as standalone applications or as ActiveX controls hosted in MSIE. Advanced graphics are available through the DirectX set of COM-based APIs.

    Windows Forms. Set of managed classes that allow for the creation of forms-based applications. Takes edge of unusual Windows 2000 features such as nonrectangular forms. Includes a managed control architecture to build reusable visual controls. Third parties will provide wrappers for DirectX functionality. Windows Forms–based applications can race as standalone applications or can subsist hosted in MSIE on clients with the CLR installed.

    Integration

    J2EE Connector (JCA). JCA is a specification based on the IBM Common Connector Framework (CCF). WAS contains WAS adapters used to connect to packaged applications such as JDEdwards, SAP, Peoplesoft, and so on. These are JCA-compliant and are shipped with VisualAge for Java. You can likewise build unusual adapters using the MQSeries adapter offerings. WAS AE multiserver version only.

    SNA Server 4.0. Server product that includes OLE DB and ODBC back for AS/400 and DB2. likewise includes COM Transaction Integrator (COMTI) for working with CICS and IMS transactions as if they were COM objects. Includes MSMQ-MQSeries bridge and host printing services, among others. Basically, this is COM-based integration, and there are likewise connectors to packaged products such as the SAP DCOM Connector.

    Host Integration Server 2000. Update of SNA Server. likewise includes integration with Commerce Server, BizTalk, dynamic Directory, and Windows Management Instrumentation (WMI). BizTalk likewise supports application-integration components (AIC) that can subsist built to integrate with packaged applications; for example, there is a SAP R/3 AIC available.

    XML Support

    Java API for XML Parsing (JAXP). An API and abstraction layer to deal with various XML parsers. Not included in the J2EE 1.2, but 1.0 is in 1.3. v1.1 supports XSLT and DOM flat 2 and SAX v2.0. IBM has a 100% Java validating XML parser with JAXP back available on its Web site. WAS includes back for DOM 1.0, SAX 1.0, and XSLT 1.0.

    MSXML. Microsoft's COM-based XML parser, included as a standalone addition to the OS and in products such as MSIE. Version 3.0 sp1 is the current version, with v4.0 as a technology preview on the MSDN Web site. V3.0 supports XSLT, XPath, and SAX2. Implements much of the DOM functionality specified by the WS3C, in addition to SAX back for event-based processing of large XML documents.

    System.Xml. A set of managed classes that implement the DOM, XSLT, and XPath specifications by the W3C. Supports both a tree-based model (DOM) and an innovative stream-based approach for parsing XML documents. likewise contains a class that maps XML documents to the ADO.NET DataSet class to provide XML-based access to relational data.

    Web Services

    WAS ships with the Apache SOAP 2.2 appliance support. The toolkit is SOAP 1.1–compliant. Can expose Java classes, EJBs, BSF scripts, or DB2-stored procs as a Web Service. Includes a command-line utility to publish EJBs as SOAP services. development tools accommodate wizards to create WSDL from an existing Java application or read WSDL to create a server stub or client proxy. UUDI4J back is likewise included for client-side interaction with UDDI registries.

    SOAP Toolkit 2.0. Downloadable. Current release is sp2. Provides a COM wrapper for implementing Web Services. Wizard exposes COM objects as a Web Service using ASP or IIS ISAPI extensions. back for WSDL 1.1. A separate UDDI SDK is available for download, and provides a COM API for structure and querying a UDDI registry. The toolkit integrates into VS 6.0 so that creating Web Services from COM components is straightforward.

    .NET Framework. SOAP 1.1 is implemented in a variety of the ground class libraries and, therefore, is very tightly integrated from both consumer and implementer perspectives. Allows individual methods in managed classes to subsist exposed as Web Services through an impute of the framework. Automatic creation of WSDL from XSD schemas and managed classes. Automatic creation of managed client proxies from WSDL through the command line and UI in VS.NET with full Intellisense. A separate UDDI SDK is available for download that provides managed classes for structure and querying a UDDI registry.

    Remoting

    Remote mode Invocation (RMI)-Internet InterORB Protocol (IIOP). Provides the programming model (RMI) and the protocol layer for (CORBA IIOP) Java-to-Java communication. Servlets and applets communicate with EJBs via RMI. Assumes a tightly bound model that creates firewall issues and is not well suited to the Internet.

    DCOM. Extension of COM for component communication across the network using any of the Windows NT network protocols. Includes remote activation and security features. Remoting of protest instances must subsist specifically programmed into the COM objects themselves. Assumes a tightly bound model that creates firewall issues and is not well suited to the Internet.

    .NET Remoting. Implemented in a set of managed classes. Allows managed code to communicate across app domain boundaries. Can communicate via HTTP or TCP channels. Supports remoting of protest instances via binary or SOAP protocols. Supports singletons and client activation. The expend of HTTP and SOAP promotes a loosely coupled architecture that does not incur firewall problems.

    Naming Services

    Java Naming and Directory Interface (JNDI). Programming interface that provides access to directory services such as DNS, LDAP, Novell (NDS), and CORBA COS through vendor-specific providers.

    WAS 4.0 is JNDI 1.2–compliant for EJB lookup. The IBM SecureWay Directory 3.2.1 product is included in WAS for access to dynamic Directory, Lotus Domino, and NDS.

    Active Directory Services Interface (ADSI). COM programming interface that supports access to NT, LDAP, and Novell (NDS) directory services through vendor-specific providers.

    Active Directory and System.DirectoryServices namespace. Windows 2000 Server includes the distributed directory used in a Windows 2000 domain while the managed classes, in DirectoryServices provide a wrapper around the ADSI interfaces to programmatically access a directory.

    Development Tools

    WebSphere Studio, Visual Age for Java. Both ship with WAS. Studio is used to build the visual representation of Web pages and JSPs, while Visual Age is used for Java coding of servlets, beans, and EJBs.

    Visual Studio 6.0, released in 1998 (three IDEs). separate IDEs exist for VC++/Visual Interdev for ASP development, and VB for form and component development. Graphical Web development.

    Visual Studio.NET. sole IDE that supports unified debugging, project management, Intellisense, Server Explorer, graphical editor for the Web and forms, class view, dynamic help, add-ins, and scripting. Can subsist used to build console applications, Windows Forms, Web Forms, Web Services, Windows Services, and components. Third-party compiler vendors can plug into VS.NET.

    B2B Integration

    ebXML. An industry specification (not a shipping product) for performing business-to-business transactions using XML and the Web. Includes some back for SOAP. Not implemented in WAS. Would exigency to roll your own infrastructure perhaps using Web Services.

    No back on NT 4. Would exigency to roll your own infrastructure using the SOAP Toolkit and Windows services.

    BizTalk Server 2000, released in 2000. A separate server product that provides a messaging/scheduling engine and industry process orchestration facilities. Messaging includes back for EDI, SOAP, and Rosettanet grammars, in addition to others.

    Key Strengths

    For organizations that must believe platform neutrality, J2EE is the only alternative. The Java language is becoming more widely accepted. Vendors such as IBM proffer a single-vendor solution when dealing with legacy applications. Separation of application logic and presentation exists, although, in practice, this is underutilized. EJB model includes automatic database-mapping facilities through CMP.

    Large ground of VB/ASP developers, resulting in reduced costs. Runs on commodity servers that can subsist scaled out. Software costs are low. Multiple language back through COM. tight integration with the dominant client platform (Windows).

    Multiple languages supported with a common set of class libraries. Unified programming model with the Services Framework. tall productivity development environment. Web application performance. Runs on commodity servers that can subsist scaled out. Separation of application logic and presentation exists. Greater integration with XML and Web Services protocols. tight integration with the dominant client platform (Windows).

    Key Weakness

    Single-language solution. Smaller ground of developers. EJBs are involved and not widely used. Thus, JSPs are overused, resulting in spaghetti code. Varying levels of J2EE conformance across vendors. The exigency to expend vendor-specific features leads to vendor lock-in. Performance varies due to vendor-specific implementations. Software cost is generally higher, developer costs are higher, and deployment time is increased.

    Highly fragmented programming model. COM infrastructure is unwieldy, leading to DLL hell and versioning problems. ASP pages that conclude not utilize COM for industry and data-access services lead to spaghetti code. Single-vendor solution.

    Not a shipping product. OO nature of CLR makes development initially more complicated for VB/ASP developers. Single-vendor solution. Does not back an automatic mapping of database rows to objects as with CMP, although there is widespread disagreement within the industry as to whether entity beans are desirable because they conclude not promote transactional consistency and are questionable in terms of performance. For more information, remark Roger Session's Web site.



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    AICPA [2 Certification Exam(s) ]
    AIIM [1 Certification Exam(s) ]
    Alcatel-Lucent [13 Certification Exam(s) ]
    Alfresco [1 Certification Exam(s) ]
    Altiris [3 Certification Exam(s) ]
    Amazon [2 Certification Exam(s) ]
    American-College [2 Certification Exam(s) ]
    Android [4 Certification Exam(s) ]
    APA [1 Certification Exam(s) ]
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    APICS [2 Certification Exam(s) ]
    Apple [69 Certification Exam(s) ]
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    NI [1 Certification Exam(s) ]
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    Nokia [6 Certification Exam(s) ]
    Nortel [130 Certification Exam(s) ]
    Novell [37 Certification Exam(s) ]
    OMG [10 Certification Exam(s) ]
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    SCP [6 Certification Exam(s) ]
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    See-Beyond [1 Certification Exam(s) ]
    Siemens [1 Certification Exam(s) ]
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    Social-Work-Board [4 Certification Exam(s) ]
    SpringSource [1 Certification Exam(s) ]
    SUN [63 Certification Exam(s) ]
    SUSE [1 Certification Exam(s) ]
    Sybase [17 Certification Exam(s) ]
    Symantec [134 Certification Exam(s) ]
    Teacher-Certification [4 Certification Exam(s) ]
    The-Open-Group [8 Certification Exam(s) ]
    TIA [3 Certification Exam(s) ]
    Tibco [18 Certification Exam(s) ]
    Trainers [3 Certification Exam(s) ]
    Trend [1 Certification Exam(s) ]
    TruSecure [1 Certification Exam(s) ]
    USMLE [1 Certification Exam(s) ]
    VCE [6 Certification Exam(s) ]
    Veeam [2 Certification Exam(s) ]
    Veritas [33 Certification Exam(s) ]
    Vmware [58 Certification Exam(s) ]
    Wonderlic [2 Certification Exam(s) ]
    Worldatwork [2 Certification Exam(s) ]
    XML-Master [3 Certification Exam(s) ]
    Zend [6 Certification Exam(s) ]





    References :


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    Dropmark-Text : http://killexams.dropmark.com/367904/12914728
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