Computer Networking Quiz (or) Computer Networking MCQ (Multiple Choice Questions)

1 .

Which methods are commonly used in Server Socket class?

A)

Public void connect ()

B)

Public synchronized void close ()

C)

Public Socket accept ()

D)

Public Output Stream get Output Stream ()

Correct Answer : Option (C) : Public Socket accept ()

Explanation : The Public socket accept () method is used by the ServerSocket class to accept the connection request of exactly one client at a time. The client requests by initializing the socket object with the servers IP address.

2 .

Which constructor of Datagram Socket class is used to create a datagram socket and binds it with the given Port Number?

A)

Datagram Socket()

B)

Datagram Socket(int port)

C)

Datagram Socket(int address)

D)

Datagram Socket(int port, Int Address address)

Correct Answer : Option (D) : Datagram Socket(int port, Int Address address)

Explanation : Datagram Socket (int port, Int Address address) is used to create a datagram socket. A datagram socket is created for connection-less communication between the server and the client. There is no accept() method in this class.

3 .

What does the java.net.InetAddress class represent?

A)

IP Address

B)

Socket

C)

Protocol

D)

MAC Address

Correct Answer : Option (A) : IP Address

Explanation : The java.net.InetAddress class represents IP Address of a particular specified host. It can be used to resolve the host name from the IP address or the IP address from the host name.

4 .

Which classes are used for connection-less socket programming?

A)

Server Socket

B)

Datagram Packet

C)

Datagram Socket

D)

Both Datagram Socket & Datagram Packet

Correct Answer : Option (D) : Both Datagram Socket & Datagram Packet

Explanation : Datagram is basically some information travelling between the sender and the receiver, but there is no guarantee of its content, arrival or arrival time. Datagram Socket, Datagram Packet are used for connection-less socket programming, while Server Socket is used for connection-oriented socket programming.

5 .

The Cookie manipulation is done using which property?

A)

cookies

B)

cookie

C)

manipulate

D)

manipulate cookie

Correct Answer : Option (B) : cookie

Explanation : The cookie property sets or returns all name/value pairs of cookies in the current document. There are no methods involved: cookies are queried, set, and deleted by reading and writing the cookie property of the Document object using specially formatted strings.

6 .

Which of the following explains Cookies nature?

A)

Volatile

B)

Non Volatile

C)

Transient

D)

Intransient

Correct Answer : Option (C) : Transient

Explanation : Cookies are transient by default; the values they store last for the duration of the web browser session but are lost when the user exits the browser. While the browsing session is active the cookie stores the user values in the user’s storage itself and accesses them.

7 .

Which attribute is used to extend the lifetime of a cookie?

A)

Lifetime

B)

Max-age

C)

Higher-age

D)

Increase-age

Correct Answer : Option (B) : Max-age

Explanation : If you want a cookie to last beyond a single browsing session, you must tell the browser how long (in seconds) you would like it to retain the cookie by specifying a max-age attribute. A number of seconds until the cookie expires. A zero or negative number will kill the cookie immediately.

8 .

Which of the following function is used as a consequence of not including semicolons, Commas or whitespace in the Cookie value?

A)

Encode()

B)

EncodeURI()

C)

EncodeComponent()

D)

EncodeURIComponent()

Correct Answer : Option (D) : EncodeURIComponent()

Explanation : Cookie values cannot include semicolons, commas, or whitespace. For this reason, you may want to use the core JavaScript global function encodeURIComponent() to encode the value before storing it in the cookie.

9 .

A second technique to reduce routing table and simplify searching process is called _________

A)

Network-Specific Method

B)

Network-Specific Motion

C)

Network-Specific Membership

D)

Network-Specific Maintaining

Correct Answer : Option (A) : Network-Specific Method

Explanation : In the network specific forwarding method, there is only one record, the destination of the packet, in the routing table and not the other hosts of the network. The other two forwarding methods are the default method and the next-hop method.

10 .

IPSec is designed to provide security at the _________

A)

network layer

B)

session layer

C)

transport layer

D)

application layer

Correct Answer : Option (A) : network layer

Explanation : IPSec is a set of protocols used to provide authentication, data integrity and confidentiality between two machines in an IP network. In the TCP/IP model, it provides security at the IP layer i.e. the network layer.