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Right option is (d) SERVLET filter

The best explanation: Servlet has various components like container, config, context, filter. Servlet filter PROVIDES the dynamic INTERCEPTION of REQUESTS and responses to TRANSFORM the information.

Correct option is (d) Servlets execute within the ADDRESS space of web server, platform independent and uses the functionality of JAVA class libraries

Easiest explanation: Servlets execute within the address space of a web server. Since it is written in java it is platform independent. The full functionality is AVAILABLE through libraries.

The correct option is (C) DataInputStream data = request.getInputStream()

Best explanation: INPUTSTREAM is an ABSTRACT class. getInputStream() RETRIEVES the request in BINARY data.

Right choice is (a) The destroy() METHOD is CALLED only once at the end of the LIFE CYCLE of a filter

Easiest explanation: destroy() is an end of life cycle method so it is called at the end of life cycle.

Right CHOICE is (a) SESSION.getAttribute(String name)

Easiest explanation: session has VARIOUS METHODS for use.

Correct ANSWER is (a) Request.getISO3Country()

Easiest EXPLANATION: Each country is USUALLY denoted by a 3 DIGIT CODE.ISO3 is the 3 digit country code.

The correct answer is (b) False

Explanation: SERVLETCONFIG object is CREATED after the constructor is CALLED and before init() is called. So, servlet init PARAMETERS cannot be accessed in the constructor.

Correct answer is (c) Initialization and CONSTRUCTOR function

Easy explanation: We cannot declare constructors for interface in Java. This means we cannot ENFORCE this REQUIREMENT to any CLASS which implements Servlet interface.

Also, Servlet requires ServletConfig object for initialization which is created by container.

The CORRECT answer is (d) 10.X.X.X, 172.X.X.X, or 192.168.X.X

The explanation is: LOCAL IP addresses look LIKE 10.X.X.X, 172.X.X.X, or 192.168.X.X.

Right ANSWER is (a) InetAddress

The explanation is: InetAddress represents an INTERNET PROTOCOL ADDRESS. It provides STATIC methods like getByAddress(), getByName() and other instance methods like getHostName(), getHostAddress(), getLocalHost().

The correct choice is (c) TCP and UDP

To explain: Transmission Control Protocol(TCP) and User Datagram Protocol(UDP) are the TWO COMMON network protocol. TCP/IP ALLOWS RELIABLE communication between two applications. UDP is connection LESS protocol.

The correct choice is (a) BINDS the serversocket to a specific address (IP Address and port)

EXPLANATION: bind() binds the server socket to a specific address (IP Address and port). If address is null, the system will pick an ephemeral port and VALID LOCAL address to bind socket.

The correct ANSWER is (c) IOException is thrown when opening the socket

The best I can EXPLAIN: public SERVERSOCKET() CREATES an unbound server socket. It throws IOException if specified port is busy when opening the socket.

Right option is (a) True

To ELABORATE: A NEW process is started with each CLIENT request and that corresponds to initiate a heavy OS LEVEL process for each client request.

The correct choice is (B) Multipurpose INTERNET MAIL Extension

To elaborate: MIME is an acronym for Multi-purpose Internet Mail Extensions. It is used for classifying FILE types over the Internet. It contains type/subtype e.g. application/msword.

Correct CHOICE is (c) FIREBUG

For explanation I would say: Firebug integrates with firefox and ENABLES to edit, DEBUG and MONITOR CSS, HTML and javascript of any web page.

Correct answer is (d) Springcore

For EXPLANATION I would say: Springcore is not a javascript framework. It is a comprehensive PROGRAMMING and CONFIGURATION model for enterprise applications based on java.

Correct choice is (a) STATELESS

To explain I would say: HTTP is a stateless protocol. It works on request and response MECHANISM and each request is an INDEPENDENT TRANSACTION.

Right OPTION is (a) INPUT tag

Easy explanation: HTML provides various user input OPTIONS LIKE input, radio, text, etc.

The CORRECT answer is (C) mq

To elaborate: Messaging is a method of communication between software components or APPLICATIONS. MQ can be USED for passing message from sender to receiver.

Correct option is (d) both jar and war

To explain I would SAY: war are deployed on apache servers or TOMCAT servers. With Spring boot and few other TECHNOLOGIES tomcat is BROUGHT on the machine by deploying jar.

Correct ANSWER is (B) server

To EXPLAIN: A servlet class extends the capabilities of servers that host applications which are ACCESSED by way of a request-response programming model.

Correct CHOICE is (d) variable TAB shows variables highlighted when values change

To explain: When a variable value CHANGES, the value in variable tab is highlighted YELLOW in ECLIPSE.

Right OPTION is (b) remote debugging

The best I can explain: Remote debugging ALLOWS us to debug applications which run on ANOTHER Java virtual MACHINE or even on another machine. We need to set certain flags while starting the APPLICATION.

Right ANSWER is (a) breakpoint view

To EXPLAIN: The Breakpoints view allows US to delete and deactivate breakpoints and watchpoints. We can ALSO MODIFY their properties.

Right answer is (b) F5

To explain I WOULD say: F5 EXECUTES currently selected line and goes to the NEXT line in the program. If the selected line is a method call, debugger steps into the associated CODE.

The correct answer is (a) BREAKPOINTS

For explanation: Breakpoints are inserted in code. We can MOVE from ONE point to ANOTHER in the EXECUTION of a program.

The correct choice is (c) launch CONFIGURATION

The explanation is: Launch configuration STORES the STARTUP class, program arguments and vm arguments.

Right option is (b) DEBUG MODE

The explanation: Debug mode allows us to RUN PROGRAM interactively while watching source code and variables during execution.