Question 1

What temporarily redirects response to the browser? A) B)<%@directive%> C)response.sendRedirect(URL) D)response.setRedirect(URL)

Accepted Answer

The correct answer is C) response.sendRedirect(URL). This method is used in Java servlets to temporarily redirect the browser to a new URL. It sends a response to the client with a status code indicating that the resource has been temporarily moved to a new URL.

Question 2

Which tag is used to set a value of a JavaBean? A) B) C) D)

Accepted Answer

The <c:set> tag is used to set the property of a JavaBean or the value of a variable in the JSP (JavaServer Pages) technology.

Question 3

Can and <%-comment-%> be used alternatively in JSP? A)True B)False C)none D)all

Accepted Answer

In JSP (JavaServer Pages), `` is not a valid comment syntax. The correct syntax for comments in JSP is `<%-- comment --%>`. Therefore, `` and `<%-comment-%>` cannot be used as alternatives for commenting in JSP.

Question 4

Java code is embedded under which tag in JSP?
A)Declaration
B)Scriptlet
C)Expression
D)Comment

Accepted Answer

Java code is embedded in JSP pages using the Scriptlet tag, which allows for the insertion of arbitrary Java code that will be executed at request time.

Question 5

Which of the following is not a directive in JSP?
A)page directive
B)include directive
C)taglib directive
D)command directive

Accepted Answer

The correct answer is D) command directive. JSP (JavaServer Pages) supports several types of directives, including page, include, and taglib, which are used to provide global information about the entire JSP page, include a file during the translation phase, and declare a tag library, respectively. However, "command directive" is not a recognized directive in JSP.

Question 6

In RMI Architecture which layer Intercepts method calls made by the client/redirects these calls to a remote RMI service?
A)Stub & Skeleton Layer
B)Application Layer
C)Remote Reference Layer
D)Transport Layer

Accepted Answer

The Stub & Skeleton Layer in RMI Architecture is responsible for intercepting method calls made by the client and redirecting these calls to a remote RMI service. The stub acts as a proxy for the remote object to provide the means of locating and communicating with the remote object, while the skeleton is used on the server side to dispatch calls to the actual remote object implementation.

Question 7

Which is an object, acts as a gateway for the client side, all the outgoing requests are routed through it and it resides at the client side and represents the remote object?
A)Stub
B)Skeleton
C)Both A & B
D)None of the above

Accepted Answer

A Stub acts as a gateway for the client side, representing the remote object and routing all outgoing requests through it. Skeleton, on the other hand, resides on the server side to handle incoming client requests.

Question 8

Java supports RMI, RMI Stands for?
A)Random Method Invocation
B)Remote Memory Interface
C)Remote Method Invocation
D)Random Method Invocation.

Accepted Answer

RMI in Java stands for Remote Method Invocation. It is a mechanism that allows an object residing in one system (JVM) to access/invoke an object running on another JVM. RMI is used to build distributed applications; it provides for remote communication between programs written in the Java programming language.

Question 9

An RMI Server is responsible for _______
A)Creating an instance of the remote object
B)Exporting the remote object
C)Binding the instance of the remote object to the RMI registry
D)All mentioned above

Accepted Answer

The answer of An RMI Server is responsible for _______
A)Creating...

Question 10

Abbreviate the term DGC?
A)Digital Garbage Collection
B)Distributed Garbage Collection
C)Distributed Garbage Connection
D)None of the above

Accepted Answer

DGC stands for Distributed Garbage Collection, which refers to the process of managing memory and reclaiming unused resources in a distributed system.

Question 11

RMI and EJB, provides services to access an object running in another JVM (known as remote object).
A)True
B)False
C)none
D)all

Accepted Answer

RMI (Remote Method Invocation) and EJB (Enterprise JavaBeans) both provide mechanisms for accessing objects running in another JVM, enabling the development of distributed applications. RMI specifically allows for the invocation of methods on remote objects, while EJB, a more comprehensive framework, supports the creation and management of enterprise-level components, including those that can be accessed remotely.

Question 12

In RMI, the objects are passed by _____.
A)Value
B)Reference
C)Value and Reference
D)None of the above

Accepted Answer

The answer of In RMI, the objects are passed by...

Question 13

RMI uses a layered architecture; each of the layers could be enhanced or replaced without affecting the rest of the system.
A)True
B)False
C)none
D)all

Accepted Answer

RMI (Remote Method Invocation) indeed uses a layered architecture, which allows for the enhancement or replacement of each layer without affecting the other layers of the system. This design principle facilitates flexibility and modularity in distributed applications.

Question 14

What are the exceptions which have to be handled in a RMI client program?
A)RemoteException
B)NotBoundException
C)MalFormedURLException
D)All mentioned above

Accepted Answer

All mentioned exceptions must be handled in a RMI (Remote Method Invocation) client program. RemoteException is a common exception that must be handled because it covers a wide range of possible issues that can occur during remote method invocation. NotBoundException is specific to attempts to look up a name that has no associated binding in the registry. MalformedURLException may be thrown to indicate that a malformed URL has occurred, typically when trying to connect to the RMI registry with a URL that is not correctly formatted.

Question 15

RMI is a server-side component; It is not required to be deployed on the server.
A)True
B)False
C)none
D)all

Accepted Answer

RMI (Remote Method Invocation) is inherently a server-side technology designed for remote communication between programs written in Java. It must be deployed on the server to enable these remote interactions, contrary to the statement given.

Question 16

Which package is used for Remote Method Invocation (RMI)?
A)java.lang.rmi
B)java.lang.reflect
C)java.applet
D)java.rmi

Accepted Answer

The correct package for Remote Method Invocation (RMI) in Java is java.rmi. This package contains the classes and interfaces for the RMI system which allows an object on one Java virtual machine to invoke methods on an object in another Java virtual machine.

Question 17

Which program obtains a remote reference to one or more remote objects on a server and then invokes methods on them in an RMI application?
A)Server
B)Client
C)Both A & B
D)None of the above

Accepted Answer

In an RMI (Remote Method Invocation) application, the client program obtains a remote reference to one or more remote objects on a server and then invokes methods on them. The server program creates and makes the objects available for remote access.

Question 18

Which objects are used by RMI for communicating with the remote object?
A)Stub
B)Skeleton
C)Both A & B
D)None of the above

Accepted Answer

RMI (Remote Method Invocation) uses both stub and skeleton for communication with remote objects. The stub acts as a proxy for the remote object and resides on the client side, handling the communication to the server. The skeleton resides on the server side and handles the communication from the stub, directing calls to the actual remote object methods.

Question 19

RMI Architecture consists of how many layers?
A)5
B)3
C)4
D)2

Accepted Answer

RMI (Remote Method Invocation) architecture consists of four layers: the application layer, the proxy/stub layer, the remote reference layer, and the transport layer.

Question 20

Which method in naming class specifies a name to the remote object?
A)bind(string name)
B)rebind(string name)
C)Both A & B
D)None of the above

Accepted Answer

The answer of Which method in naming class specifies a...

Quiz 4: RMI and JSP : Layers, Directives, and Functionality

What temporarily redirects response to the browser?

Which tag is used to set a value of a JavaBean?

Can <!-comment-> and <%-comment-%> be used alternatively in JSP?

Java code is embedded under which tag in JSP?

Which of the following is not a directive in JSP?

In RMI Architecture which layer Intercepts method calls made by the client/redirects these calls to a remote RMI service?

Which is an object, acts as a gateway for the client side, all the outgoing requests are routed through it and it resides at the client side and represents the remote object?

Java supports RMI, RMI Stands for?

An RMI Server is responsible for _______

Abbreviate the term DGC?

RMI and EJB, provides services to access an object running in another JVM (known as remote object) .

In RMI, the objects are passed by _____.

RMI uses a layered architecture; each of the layers could be enhanced or replaced without affecting the rest of the system.

What are the exceptions which have to be handled in a RMI client program?

RMI is a server-side component; It is not required to be deployed on the server.

Which package is used for Remote Method Invocation (RMI) ?

Which program obtains a remote reference to one or more remote objects on a server and then invokes methods on them in an RMI application?

Which objects are used by RMI for communicating with the remote object?

RMI Architecture consists of how many layers?

Which method in naming class specifies a name to the remote object?