Computer Networking MCQ Questions Answers

1. In the Command Prompt, what is the command to show the most detailed printout of IP address info?

2. Given the IP address 82.77.201.1/24, what is the network number?

3. What is the normal reach of a signal from a wireless router?

4. When using the PING utility, what are you trying to accomplish?

5. The name of unit exchanged at network layer is called:

6. Which IP address is reserved for loopback testing and debugging?

7. Open System Interconnection (OSI) Model has following layers:

8. Which is the best example of a secure password?

9. Port number of HTTP is:

10. How many layers are there in the OSI model?

11. What is NIC?

12. Can computers with different operating systems communicate over a network?

13. Is it possible to connect two computers without using any hubs or routers for network communication?

14. Which of the following is an Ethernet connector type?

15. What type of network is commonly used in houses?

16. Which of the following is NOT a protocol?

17. What is bandwidth?

18. Which of the following is a connection oriented protocol?

19. Which of the following is not a network topology?

20. A firewall in a Computer Network is a

21. TCP is a ___ protocol.

22. What is a MAC address?

23. Which command will display the assigned IP address of a network adpater installed on a Windows XP system?

24. Which of the following is NOT an example of a client/server?

25. Which protocol is used for email transmission?

26. ADSL stands for:

27. Is it possible for a computer on local network A to talk to a computer on a local network B?

28. What is a handshake?

29. Which is example of wireless encryption?

30. What technology exists that allows a non-routable IP address to communicate with the global IP Internet Network.

31. What is currently the most common and fastest transmission rate for ethernet cables?

32. When can a wireless device NOT connect to a wireless network?

33. What is the maximum supported distance for an Ethernet cable run?

34. Which one is connectionless protocol?

35. What is the purpose of a static IP?

36. Which of the following is NOT an application layer protocol for email?

37. Which item is an example of a physical network address?

38. Which of the network type covers the country level location:

39. Can a computer also act as a router?

40. Which of the following describes how two communicating parties exchange information?

41. When you connect two network switches or two computers directly what type of Ethernet cable do you need?

42. FTP client contacts FTP server at port:

43. A user loads a web browser and browses to http://www.google.com, what is the highest layer of the OSI model the user is functioning at?

44. What is the purpose of an IP?

45. What is the maximum Ethernet cable length between repeaters (computers or switches)?

46. Is it possible to program at the socket level?

47. How is data transferred over a network?

48. The process in which information packets are forwarded to hops is called:

49. Which of the following major networks contain an incorrect subnet mask?

50. Which device is the central device of star topology?

51. UDP is an unreliable protocol.

52. What is the difference between network address and port number?

53. Which of the given TCP/IP protocols can assign a logical address to a host?

54. What is considered part of a network core?

55. What best describes a client/server model?

56. Print server uses ________ which is a buffer that holds data before it is send to the printer.

57. What is a protocol?

58. IPv6 address space is:

59. The default MTU of a typical Ethernet is

60. Hub is a ----------- device.

61. Which switching type has the re-route capability:

62. What is the second layer (layer 2) of the OSI model?

63. Which IPv4 address is not valid?

64. ____ protocol is used by Telnet.

65. Technically, what is the difference between HUB and Switch?

66. Which service reduce the response time for client request and satisfy client request without involving origin server.

67. If you wanted to test to see if a TCP port was opened on a server, what command/tool would you use?

68. Which are the default settings for a Windows XP computer network adapter?

69. Which of the following is/are NOT the difference between TCP and UDP?

70. Where is a hub specified in the OSI model?

71. What fields in the header of an IP packet will be decremented by one that is passed through each router?

72. A server that has HTTP services and SMTP services bound to an interface functions with what protocol?

73. What does the term "Map Network Drive" mean?

74. Which of the following IP addresses is a class A Network?

75. Who initiates a connection between a client and server?

76. A network with more than one exit point.

77. IP Addresses are 48 bit addresses and MAC addresses are 32 bit addresses written in hexadecimal format

78. Which network type can have transmission of data in both directions but not simultaneously.

79. Skype is an example of:

80. What is the subnet mask of this network: 192.168.0.0/29

81. Which network topology is based on a hierarchy of nodes?

82. In TCP/IP model, TCP and UDP protocols work on which layer:

83. Which is NOT a wireless network signal?

84. Does P2P require an always on server?

85. For 802.11b wireless, how many frequency channels are available to avoid collisions/interference?

86. A router that responds to an ARP request intended for a remote host is called what?

87. The name of unit exchanged at Data Link Layer is called:

88. Which topology has a single point failure, i.e. One cable broken whole network is off.

89. What does an assigned IP addres 169.254.0.12 indicate?

90. In IPv4 addresses, how many addresses are available?

91. What or who is responsible for top-level country domains such as uk, ca, and jp?

92. What is the maximum speed of a wireless G network?

93. Which topology uses terminators?

94. Which protocol is used to send a destination network unknown message back to originating hosts?

95. Variability of packet delays within the same packet stream is called

96. In what Operating System(s) are sockets file descriptors?

97. Is a DNS required for hosting a website?

98. What is the primary Layer 3 protocol in the TCP/IP suite?

99. You are a Network Administrator for the ACME company; one of your webservers had a hardware issue, so you moved the IP address (192.168.1.99) to another webserver. Users from other networks are reporting that they still are not able to access the website. You are able to access the website locally; What is the best answer that will fix the issue.

100. What is the purpose of the ARP (Address Resolution Protocol)?