java finallllll
Which of the following methods is used to receive a datagram?
. receive()
Which of the following strings can be used for the host name to establish a socket connection with the server running on the same machine with the client?
127.0.0.1 b. InetAddress.getLocalHost() c. localhost d. All of the above.-answer
Servlets embed Java code directly into HTML pages
False
In which layer do socket applications belong?
Application Layer
Which of the following IP address classes do multicasting addresses belong to
Class D
JSPs embed HTML inside Java code.
False
Which of the following address pairs is known as socket address?
IP address
To obtain an InputStream on a socket sock, use __________.
InputStream in = sock.getInputStream();
What is the full form of IPC?
Inter-Process Communication
Servlets
Read the explicit data sent by the clients (browsers) Read the implicit HTTP request data sent by the clients. Process the data and generate the results. All answers above are correct-answer
Which of the following is used by a client to establish a socket connection with the server?
Socket s = new Socket(ServerName, port);
Which of the following statements is used by the server to listen for a connection request from a client?
Socket s = serverSocket.accept();
What happens when a server uses a port to bind an object, but the port is not available?
The exception java.net.BindException occurs.
What is the full form of TCP?
Transmission Control Protocol
A web container is responsible for mapping ____ to a particular servlet
URL
What is the full form of UDP?
User Datagram Protocol
Correct access rights to servlets are managed by the _____
Web container
Common object communication patterns are called
behavioral patterns
Which of the following methods is used to assign a socket address to a socket?
bind()
__ pattern is used when we need to decouple an abstraction from its implementation so that the two can vary independently.
bridge
.___ pattern separates the construction of a complex object from its representation.
builder
Imagine a scenario when a given task to be accomplished need not be performed by a single object. It can be handled by multiple objects, each contributing to the task completion in a specific and limited way. The common design pattern to use is
chain-of-responsibility
When examining several classes that have Execute() method, the most likely implemented design pattern is
command
Common object instantiation patterns are called
creational patterns
Design pattern problem
explains the problem and its context.
___ pattern provides a simple decision making class that returns one of several possible subclasses of an abstract base class.
factory
Concurrent client requests for a servlet are
handled by separate threads
Which of these packages contains classes and interfaces for networking?
java.net
Servlet API is partially specified in the _____ package
javax.servlet.http
When you need to implement an 'undo' or a 'rollback' operation, the standard design pattern is
memento
___ pattern manages and creates instances of a class that can be used interchangeably.
object pool
This pattern defines one-to-many dependency between objects so that when one object changes its state all the others are notified about the change.
observer
Java servlet handles the business logic as a _____ process
server-side
All servlets implement the ____ interface.
servlet
___ pattern provides a single global point of access to one instance.
singleton
Which of the following is used to get an InetAddress object on a socket object sock.
sock.getInetAddress();
Design patterns are ______
solutions to general software development problems
Common object composition patterns are called
structural patterns
The MVC design pattern decouples these major components allowing for efficient code reuse and parallel development.
user interface - business rules - data store
When you need to implement a double dispatch (the operation depends on types of the sender and the receiver), the standard design pattern is
visitor
