About Computer Network

Following are some of the multiple choice questions on the Computer Network with answers that will help the students in developing their knowledge.

Computer Network MCQ

1. A DNS client is called

  • dns updater
  • dns resolver
  • dns handler
  • none of the mentioned

2. What are the advantages of computer network

  • Share information
  • Share resources
  • Used as mode of communication
  • All of above

3. NAT stands for .

  • network address transformer
  • network address translator
  • network address translation
  • Both B and C above

4. In wireless network an extended service set is a set of ________

  • connected basic service sets
  • all stations
  • all access points
  • connected access points

5. What is the network ID for a computer whose IP address is190.148.64.23?

  • 190
  • 190.148
  • 190.148.64
  • None of the above

6. Which is the correct expression for the length of UDP datagram?

  • udp length = ip length – ip header’s length
  • udp length = udp length – udp header’s length
  • udp length = ip length + ip header’s length
  • udp length = udp length + udp header’s length

7. Which of the following statements can be associated with OSI model?

  • a structured way to discuss and easier update system components
  • one layer may duplicate lower layer functionality
  • functionality at one layer no way requires information from another layer
  • it is an application specific network model

8. Which of the following field in IPv4 datagram is not related to fragmentation?

  • flags
  • offset
  • tos
  • identifier

9. Which of the following are transport layer protocols used in networking?

  • tcp and ftp
  • udp and http
  • tcp and udp
  • http and ftp

10. A device used to connect two networks that have different protocols.

  • A Gateway
  • A Bridge
  • A Switch
  • A Server

11. Multiple object can be sent over a TCP connection between client and server in

  • persistent http
  • nonpersistent http
  • both (a) and (b)
  • none of the mentioned

12. The values GET, POST, HEAD etc are specified in ____ of HTTP message

  • request line
  • header line
  • status line
  • entity body

13. What network covers a SMALL geographical area?

  • WAN
  • JAN
  • LAN
  • GAN

14. What is a characteristic of port-based memory buffering?

  • All frames are stored in a common memory buffer.
  • Frames are buffered in queues linked to specific ports
  • All ports on a switch share a single memory buffer.
  • Frames in the memory buffer are dynamically linked to destination ports.

15. A LAN usually requires a login to access the network

  • True
  • False

16. The basic advantages of the computer network is

  • Hacking
  • easy to communicate
  • network down
  • none of the above

17. Which of these is not a network protocol?

  • HTTP
  • POP3
  • SMTP
  • HDMI

18. Which network connection is faster and more relaiable?

  • Wired
  • Wireless

19. Device used to connect multiple networks

  • Hub
  • Switch
  • Router
  • Connector

20. Set of rules or standards that governs how data is to be transferred among the computers on a network

  • Governor
  • Standard rule
  • Syntax rules
  • Protocol

21. Which of the following peripherals is MOST likely to be shared via a network?

  • Projector
  • Printer
  • Keyboard
  • All of above

22. Local Area Networks are usually located within a single building

  • True
  • False

23. What are the types of network based on geographical area

  • WAN
  • LAN
  • MAN
  • All of above

24. Network device that divides bandwidth equally among computers connected to it

  • Hub
  • Switch
  • Router
  • Connector

25. Match the following:(P) SMTP (1) Application layer(Q) BGP (2) Transport layer(R) TCP (3) Data link layer(S) PPP (4) Network layer(5) Physical layer

  • P – 2 Q – 1 R – 3 S – 5
  • P – 1 Q – 4 R – 2 S – 3
  • P – 1 Q – 4 R – 2 S – 5
  • P – 2 Q – 4 R – 1 S – 3

26. Which of the following system calls results in the sending of SYN packets?

  • socket
  • bind
  • listen
  • connect

27. The 802.5 standard implements a way for preventing collisions on the network. How are collisions prevented when using this standard?

  • CSMA/CD
  • Token passing
  • Collision detection
  • Time sharing

28. With an IP address of 201.142.23.12, what is your default subnet mask?

  • 0.0.0.0
  • 255.0.0.0
  • 255.255.0.0
  • 255.255.255.0

29. _______ can detect burst error of length less than or equal to degree of thepolynomial and detects burst errors that affect odd number of bits.

  • Hamming Code
  • VRC
  • CRC
  • None of the above

30. 993. Determine the maximum length of the cable (in km) for transmitting data at a rate of 500 Mbps in an Ethernet LAN with frames of size 10,000 bits. Assume the signal speed in the cable to be 2,00,000 km/s.

  • 1
  • 2
  • 2.5
  • 5

31. What is the network ID for a computer whose IP address is 190.148.64.23?

  • 190
  • 190.148
  • 190.148.64
  • None of the above

32. What is the difference between ring and bus topology?

  • In Ring, all nodes are connected with another in a loop while in the bus they are connected to a central cable
  • In Ring, all nodes are connected with another loop while on a bus they are connected to a central cable
  • In the bus, all nodes are connected with another in a loop while instar they are connected to a central node
  • In Bus all nodes are connected with another loop while instar they are connected to a central cable

33. Piconets in the blue tooth a minimum of two and a maximum of ____________ Bluetooth peerdevices.

  • five
  • eight
  • nine
  • four

34. _______ assigns a unique number to each IP network adapter called the MAC address.

  • Media Access Control
  • Metro Access Control
  • Metropolitan Access Control
  • Both B and C above

35. __________ is a standard suite of protocols used for packet switching across computer networks.

  • x.22
  • x.23
  • x.25
  • x.26

36. A stream socket provides _________ communications between a client and a server

  • One way
  • Two way

37. If there are n signal sources of same data rate, then the TDMlink has slots.

  • N
  • n/2
  • n*2
  • 2n

38. Which of the following delay is faced by the packet in travelling from one end system toanother?

  • Propagation delay
  • Queuing delay
  • Transmission delay
  • All of the mentioned

39. If link transmits 4000frames per second, and each slot has 8 bits, the transmission rate of circuit this TDM is

  • 32kbps
  • 500bps
  • 500kbps
  • 32bps

40. In TDM, the transmission rate of a multiplexed path is always the sum of the transmission rates of the signal sources.

  • Equal to
  • Lesser than
  • Greater than
  • Equal to or greater than

41. Is the multiplexing technique that shifts each signal to a different carrierfrequency.

  • FDM
  • TDM
  • Both FDM & TDM
  • PDM

42. The physical layer translates logical communication requestsfrom the into hardware specific operations.

  • Transport layer
  • Network layer
  • Data link layer
  • Application layer

43. What will be the efficiency of a Stop and Wait protocol, if the transmissiontime for a frame is 20ns and the propagation time is 30ns?

  • 20%
  • 25%
  • 40%
  • 66%

44. In a packet switching network, if the message size is 48 bytes and eachpacket contains a header of 3 bytes. If 24 packets are required to transmit the message, the packet size is .

  • 2 bytes
  • 1 bytes
  • 4 bytes
  • 5 bytes

45. In Ethernet CSMA/CD, the special bit sequence transmitted by media accessmanagement to handle collision is called

  • Preamble
  • Post amble
  • Jam
  • None of the above

46. Which of the following below is a loopback IP address?

  • 127.0.0.0
  • 127.0.1.1
  • 127.0.1.0
  • 127.0.0.1

47. The time required to examine the packet’s header and determine where to direct the packetis part of

  • Processing delay
  • Queuing delay
  • Transmission delay
  • Propagation delay

48. Which of the following statements is FALSE regarding a bridge?

  • Bridge is a layer 2 device
  • Bridge reduces collision domain
  • Bridge is used to connect two or more LAN segments
  • Bridge reduces broadcast domain

49. Which file transfer protocol uses UDP?

  • NFS
  • TELNET
  • TFTP
  • FTP

50. Which of the following network access standard is used for connectingstations to a circuit-switched network?

  • X.3
  • X.21
  • X.25
  • X.75

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