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Computer Networks - I

Computer Networks - I

24 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Address field in HDLC bit oriented frame is

  1. 8 bytes
  2. 32 bits
  3. 8 bits
  4. None
Question 2 Multiple Choice (Single Answer)

Frequency limiting

  1. is the property of the medium
  2. is used by using filter to limit the amount of bandwidth available to customer
  3. 1 & 2
  4. none
Question 3 Multiple Choice (Single Answer)

An 8 level extended QPSK modem has a bit rate (C) = 12,000 bps. Calculate the analog signalling frequency.

  1. 2000
  2. 4000
  3. 8000
  4. None
Question 4 Multiple Choice (Single Answer)

A datagram in IPV6 with a priority of ______ will be discarded before a datagram with a priority of 12.

  1. 11
  2. 7
  3. 0
  4. Any of the above
Question 5 Multiple Choice (Single Answer)

Repeaters are

  1. SW entities
  2. HW entities
  3. In physical layer
  4. Both 2 & 3
Question 6 Multiple Choice (Single Answer)

In frame relay _____ bit in the address filed is set to signify the last address byte.

  1. DE
  2. EA
  3. C/R
  4. FECN
Question 7 Multiple Choice (Single Answer)

A host with an IP address of 144.2.2.1 needs to test internal software. What is the destination address in the packet?

  1. 127.1.1.1
  2. 144.0.0.0
  3. 144.255.255.255
  4. 127.0.0.0
Question 8 Multiple Choice (Single Answer)

In direct point to point communication adding the Nth computer requires___________ new connections.

  1. N2
  2. N - 1
  3. (N2 - N)/2
  4. None of the given
Question 9 Multiple Choice (Single Answer)

Subnet address in IPV6 is

  1. 48 bits
  2. 8 bits
  3. 16 bits
  4. 32 bits
Question 10 Multiple Choice (Single Answer)

Traditional LANs such as Token Ring, Ethernet Bus use

  1. Circuit Switching
  2. Packet Switching
  3. Radio Frequency (RF) wireless
  4. Packet Broadcasting
Question 11 Multiple Choice (Single Answer)

In Shell account,

  1. www browsing is not possible
  2. mail can be sent
  3. character user interface only supported
  4. all of the above
Question 12 Multiple Choice (Single Answer)

All 32 bits are 0’s in an IP address

  1. is used by diskless machines
  2. class A type address
  3. can be recognised by bootstrap server
  4. all of the above
Question 13 Multiple Choice (Single Answer)

Identify the following IP address 160.5.255.255.

  1. Host IP address
  2. Direct broadcast address
  3. Limited broadcast address
  4. Network address
Question 14 Multiple Choice (Single Answer)

In network terminology, ATM most generally refers to

  1. a type of network adaptor
  2. a set of standards that define a network architecture
  3. a physical communication medium
  4. none of these
Question 15 Multiple Choice (Single Answer)

Which of the following requires higher bandwidth?

  1. Speech
  2. Facsimile
  3. Video
  4. Music
Question 16 Multiple Choice (Single Answer)

In X.25, Permanent VC address is

  1. EA
  2. FECN/BBCN
  3. DE
  4. DLCI
Question 17 Multiple Choice (Single Answer)

LLC (Logical Link Layer)

  1. is independent of MAC. LLC is same for Ethernet bus, token ring. LLC is a layer below MAC and LLC interfaces to PL.
  2. is unique to each MAC.
  3. is grouped for bus, ring, wireless LAN’s. That is, all bus MAC’s use one type of LLC, all ring MAC’s use another LLC.
  4. is independent of MAC. Same LLC is emploted in Ethernet bus, token ring.
Question 18 Multiple Choice (Single Answer)

For a 1Gbps IEEE 802.3 LAN with maximum length of 250 m should have frame size of atleast

  1. 6400 bytes
  2. 640 bytes
  3. 64 bytes
  4. None
Question 19 Multiple Choice (Single Answer)

The traditional phone network is

  1. circuit switched
  2. datagram packet switched
  3. neither of the above
  4. all of the above
Question 20 Multiple Choice (Single Answer)

TCP

  1. is connection oriented
  2. adds the above features to services of IP
  3. has connection establishment, managment
  4. all of the above
Question 21 Multiple Choice (Single Answer)

E1 carrier data rate is

  1. 1.544Mbps
  2. 2.048Mbps
  3. 6.468Mbps
  4. None
Question 22 Multiple Choice (Single Answer)

Data Link layer responsibility does not include

  1. framing & de-framing
  2. delivery of data from source machine to destination machine
  3. piggybacking
  4. flow control
Question 23 Multiple Choice (Single Answer)

The ___ address uniquely identifies a running program.

  1. IP address
  2. Host
  3. NIC
  4. Socket
Question 24 Multiple Choice (Single Answer)

A 16 levels extended QPSK modem uses a 2400 hz carrier(W) on the telephony network. The bit rate is

  1. 20 Kbps
  2. 19.2 Kbps
  3. 1 Mbps
  4. None
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