Computer Network Questions for IBPS RRB PO and Clerk Mains 2019

1.

Communication channel is shared by all the machines on the network in:

   A.) broadcast network
   B.) unicast network
   C.) multicast network
   D.) Internet Protocol Address

Answer: Option 'A'

Broadcast networks: It has a single communication channel that is shared by all the machines on the network. Short messages, called packets in certain contexts, sent by any machine are received by all the others.

2.

Bluetooth is an example of:

   A.) local area network
   B.) personal area network
   C.) virtual private network
   D.) wide area network

Answer: Option 'B'

A personal area network (PAN) is a computer network used for data transmission amongst devices such as computers, telephones, tablets and personal digital assistants. Bluetooth is an example of the same.

3.

A list of protocols used by a system, one protocol per layer, is called: 

   A.) protocol architecture
   B.) protocol stack
   C.) protocol suit
   D.) protocol application

Answer: Option 'B'

A protocol stack refers to a group of protocols that are running concurrently that are employed for the implementation of network protocol suite.

4.

In which of the following scenarios does Network congestion occur?

   A.) in case of a node termination
   B.) when a system terminates
   C.) when connection between two nodes terminates
   D.) in case of traffic overloading

Answer: Option 'D'

Network congestion occurs when a network node is carrying more data than it can handle. That is typically due to traffic overloading.

5.

Which among the following refers to the physical or logical arrangement of network?

   A.) Topology
   B.) Routing
   C.) Networking
   D.) Subnetting

Answer: Option 'A'

Network topology is the arrangement of the various elements (links, nodes, etc.) of a computer network. Essentially, it is the topological structure of a network and may be depicted physically or logically.

6.

Which among the following topology requires multipoint connection?

   A.) Star
   B.) Mesh
   C.) Ring
   D.) Bus

Answer: Option 'D'

The point-to-point and Multipoint are two types of line configuration. Both describe a method to connect two or more communication devices in a link. Multipoint connection is used in BUS Topology. All the devices are connected to a single transmission medium, which acts as the Backbone of the connection.

7.

Encryption and Decryption are the functions of __________ layer.

   A.) transport
   B.) session
   C.) presentation
   D.) physical

Answer: Option 'C'

Encryption and Decryption are the functions of the presentation layer.

8.

Which of the following describe router functions?

   A.) Packet switching
   B.) Packet filtering
   C.) Internetwork communication
   D.) All of the above

Answer: Option 'D'

 All of the given options are router functions.

9.

Which physical layer devices can be used to enlarge the area covered by a single LAN segment?
1. Switch
2. NIC
3. Hub
4. Repeater
5. RJ45 transceiver

   A.) 1 only
   B.) 1 and 3
   C.) 3 and 4
   D.) 5 only

Answer: Option 'C'

A repeater operates at the physical layer. Its job is to regenerate the signal over the same network before the signal becomes too weak or corrupted to extend the length to which the signal can be transmitted over the same network.  A hub is basically a multiport repeater. A hub connects multiple wires coming from different branches, for example, the connector in star topology which connects different stations.

10.

What does MAN stands for?

   A.) Micro area network
   B.) Metropolitan area network
   C.) Macro area network
   D.) Mix area network

Answer: Option 'B'

MAN is abbreviation for Metropolitan Area Network.


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