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PPSC PAST PAPER LECTURER COMPUTER SCIENCE (BS-17) (MALE & FEMALE) -2017

(51) . ln comouter network nodes are'

  1. The computer that originates the data

  2. The computer that routes the data

  3. The computer that terminates the data

  4. All of these

(52) . Communication channel is shared by all the machines on the network in:

  1. Broadcast network

  2. Uni-cast network

  3. Multi-cast network*

  4. None of these

(53) . Bluetooth is an example of:

  1. Personal area network

  2. Local area network

  3. Virtual private network

  4. None of these

(54) . A _________ Is a device that forwards packets between networks by processing the routing information included ln the packet.

  1. Bridge

  2. Firewall

  3. Router

  4. All of these

(55) . A list of protocols used by a system' one Protocol Per layer. ts called:

  1. Protocol architecture

  2. Protocol stack

  3. Protocol suit

  4. None of these

(56) . Network congestion occurs.

  1. ln case of traffic overloading

  2. When a system terminates

  3. when connection between two nodes terminates

  4. None of these

(57) . Which. one of the following extends a private network across public networks?

  1. Local area network

  2. Virtual private network

  3. Enterprise private network

  4. Storage area network

(58) . The network layer concerns with:

  1. Bits

  2. Frames

  3. Packets

  4. None of these

(59) . Which one of the following is not a function of network laver?

  1. Routing

  2. Inter-networking

  3. Congestion control

  4. None of these

(60) . The 4 byte IP address consists of:

  1. Network address

  2. Host address

  3. Both A and B

  4. None of these

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