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

1 .

Which connector does the STP cable use?

A)

BNC

B)

RJ-11

C)

RJ-33

D)

RJ-45

Correct Answer : Option (D) : RJ-45

Explanation : RJ-45 is used for STP cable. 100 Mbps is the max data transfer rate that can be handled by STP. RJ-45 is popularly used to connect to modern-day routers, computer network cards, and other network devices.

2 .

What is the max data transfer rate for optical fiber cable?

A)

10 Mbps

B)

100 Mbps

C)

1000 Mbps

D)

10000 Mbps

Correct Answer : Option (D) : 10000 Mbps

Explanation : Fiber channel speeds have been increasing over the years. 10000 Mbps is the max data transfer rate for optical fiber cables. It is said to be the fastest among the other kinds of cables like STP cables and co-axial cables. People are now using optical fiber cables instead of STP cables for LANs due to their fast data transfer capability.

3 .

Which of the following architecture uses the CSMA/CD access method?

A)

Ethernet

B)

Router

C)

ARC net

D)

STP server

Correct Answer : Option (A) : Ethernet

Explanation : Collision detection is not possible in Ethernet without extensions. Collision detection techniques for multiple access like CSMA/CD are used to detect collisions in the Ethernet architecture.

4 .

A local telephone network is an example of a _______ network.

A)

Bit switched

B)

Line switched

C)

Circuit switched

D)

Packet switched

Correct Answer : Option (C) : Circuit switched

Explanation : Circuit switching is connection oriented switching technique, whereas in the case of packet switching, it is connectionless. Circuit switching is implemented in the Physical layer, whereas packet switching is implemented in the Network layer. Internet too is based on the concept of circuit switching.

5 .

What are the Methods to move data through a network of links and switches?

A)

Line switching and bit switching

B)

Packet switching and Circuit switching

C)

Circuit switching and Line switching

D)

Packet switching and Line switching

Correct Answer : Option (B) : Packet switching and Circuit switching

Explanation : Packet switching and Circuit switching are two different types of switching methods used to connect the multiple communicating devices with one another. Packet switching is used in conventional LAN systems and circuit switching is used in telephonic systems.

6 .

The required resources for communication between end systems are reserved for the duration of the session between end systems in ________ method.

A)

Line switching

B)

Packet switching

C)

Circuit switching

D)

Frequency switching

Correct Answer : Option (C) : Circuit switching

Explanation : In circuit switching, a physical path between the sender and receiver is established. This path is maintained until the connection is needed. Circuit switching is implemented in the Physical layer and is used in telephonic systems.

7 .

As the resources are reserved between two communicating end systems in circuit switching, ___________ is achieved.

A)

reliability

B)

authentication

C)

store and forward

D)

guaranteed constant rate

Correct Answer : Option (D) : guaranteed constant rate

Explanation : Circuit switching is connection oriented and is always implemented in the physical layer. Once a path is set, all transmission occurs through the same path. It is used since the early times in telephonic systems.

8 .

The default connection type used by HTTP is _____

A)

Persistent

B)

Non-persistent

C)

Can be either persistent or non-persistent depending on connection request

D)

None of the above

Correct Answer : Option (A) : Persistent

Explanation : By default the http connection is issued with persistent connection. In persistent connection server leaves connection open after sending response. As little as one RTT (Time for a small packet to travel from client to server and back) is required for all referenced objects.

9 .

The time taken by a packet to travel from client to server and then back to the client is called _____

A)

JTT

B)

RTT

C)

PTT

D)

STT

Correct Answer : Option (B) : RTT

Explanation : RTT stands for Round-Trip Time.

10 .

The HTTP request message is sent in _________ part of three-way handshake.

A)

First

B)

Second

C)

Third

D)

Fourth

Correct Answer : Option (C) : Third

Explanation : In first step client sends a segment to establish a connection with the server. In the second the step the client waits for the acknowledgement to be received from the server. After receiving the acknowledgement, the client sends actual data in the third step.