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

1 .

The first line of HTTP request message is called ________

A)

Entity line

B)

Status line

C)

Request line

D)

Header line

Correct Answer : Option (C) : Request line

Explanation : The line followed by request line are called header lines and status line is the initial part of response message.

2 .

The values GET, POST, HEAD etc are specified in _____ of HTTP message

A)

Header line

B)

Status line

C)

Entity body

D)

Request line

Correct Answer : Option (D) : Request line

Explanation : It is specified in the method field of request line in the HTTP request message.

3 .

The ________ method when used in the method field, leaves entity body empty.

A)

GET

B)

PUT

C)

POST

D)

SEND

Correct Answer : Option (A) : GET

Explanation : There are two methods which help to request a response from a server. Those are GET and POST. In GET method, the client requests data from server. In POST method the client submits data to be processed to the server.

4 .

The conditional GET mechanism

A)

Limits the number of response from a server

B)

Helps to keep a cache upto date

C)

Imposes conditions on the objects to be requested

D)

None of the above

Correct Answer : Option (B) : Helps to keep a cache upto date

Explanation : The HTTP protocol requests the server of the website its trying to access so that it can store its files, images etc. in cache memory. This request of asking the server for a document considering a specific parameter is called conditional GET Request.

5 .

Find the oddly matched HTTP status codes

A)

200 OK

B)

400 Bad Request

C)

301 Moved permanently

D)

304 Not Found

Correct Answer : Option (D) : 304 Not Found

Explanation : 404 Not Found.

6 .

Expansion of FTP is _____

A)

First Transfer Protocol

B)

Fast Transfer Protocol

C)

File Transfer Protocol

D)

Fine Transfer Protocol

Correct Answer : Option (C) : File Transfer Protocol

Explanation : File Transfer Protocol is an application layer protocol used to share “files” between a server and a client. The protocol uses two separate ports for data and control connections: port 20 for data and port 21 for control.

7 .

FTP is built on _____ architecture.

A)

P2P

B)

Data centric

C)

Client-server

D)

Service oriented

Correct Answer : Option (C) : Client-server

Explanation : An FTP connection includes a Server and a Client which wish to share a number of data files. The server can transfer files with multiple clients at the same time while the client communicates with only one server at a time.

8 .

FTP uses _________ parallel TCP connections to transfer a file.

A)

1

B)

2

C)

3

D)

4

Correct Answer : Option (A) : 2

Explanation : Control connection using FTP port: 21, and data connection using FTP port: 20. The FTP session is started or ended using port 21 and the actual data i.e. files are sent through port 20.

9 .

The commands, from client to server, and replies, from server to client, are sent across the control connection in ________ bit ASCII format.

A)

8

B)

7

C)

6

D)

5

Correct Answer : Option (B) : 7

Explanation : FTP was designed to transmit commands only in English characters that are possible with just 7 bits in ASCII. Even the media has to be converted to ASCII before transmission.

10 .

Find the FTP reply whose message is wrongly matched.

A)

452 – Error writing file

B)

425 – Can’t open data connection

C)

331 – Username OK, Password Required

D)

452 – Can’t open data connection

Correct Answer : Option (D) : 452 – Can’t open data connection

Explanation : The correct response code for the message “Can’t open data connection” is 425. Response code 452 is sent usually when the connection is suddenly closed.