General TCP/IP MCQs

1. Which of the following is NOT a valid class of IP addresses?

2. Which of the following commands can be used on some IP hosts to list the details of fragmentation?

3. Which of the following is the maximum length of an IP datagram?

4. Which of the following IP addresses use 24 bits for the <network> and 8 bits for the <host> portion of the IP address?

5. Which of the following is private IP address?

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

7. Which protocol ensures reliable delivery

8. Which of the following is a VALID dynamic routing protocol category?

9. You want to implement a mechanism that automates the IP configuration, including IP address, subnet mask, default gateway, and DNS information. Which protocol will you use to accomplish this?

10. Which IP address is reserved for loopback testing?

11. Which protocol deals with resolving domain names

12. TCP is a "Blank" protocol.

13. Which of the following protocol adds no reliability, flow-control, or error recovery to IP and simply serves as a multiplexer/demultiplexer for sending and receiving datagrams, using ports to direct the datagrams?

14. Which of the following IP addresses are reserved for multicasting (broadcasting)?

15. Which of the following addresses have : First 24 bits : Network address Last 8 bits : Local host address

16. Which of the following type of IP addresses are suitable for networks with an extremely large number of hosts?

17. What is the telecommunication protocol that all computers must use to be part of the Internet.

18. Which of the following are reserved for future/experimental/test use?

19. Which protocol deals with emails

20. Which of the following IP addresses use 14 bits for the <network> and 16 bits for the <host> portion of the IP address?

21. The network number portion of the IP address is administered by which of the following?

22. Which of the following fields in the header of an IP packet will be decremented by one at each router?

23. Which of the following is a VALID use of IP address 224.0.0.0/4?

24. Which of the following is an interface between an application/program/software and network?

25. Which class of IP address provides a maximum of only 254 host addresses per network ID?

26. IP addresses are represented by a which of the following sized unsigned binary value?

27. Which of the following IP addresses use 8 bits for the <network> and 24 bits for the <host> portion of the IP address?

28. TCP contains fields in the header of TCP Segment to identify upper layer applications, what are these fields?

29. Which of the following correctly describes Dynamic Host Configuration Protocol (DHCP) message type DHCPOFFER?

30. Which of the following correctly describes Dynamic Host Configuration Protocol (DHCP) message type DHCPRELEASE?

31. Which of the following is an VALID RIP packet type?

32. Which of the following allows a router to respond to an ARP request that is intended for a remote host?

33. If you use either Telnet or FTP, which is the highest layer you are using to transmit data?

34. Which of the following TCP/IP protocol layer is also called as internet layer or the network layer?

35. Which of the following TCP/IP protocol layer is also called as a link layer or the data-link layer?

36. Dynamic Host Configuration Protocol (DHCP) supports which of the following mechanisms for IP address allocation?

37. Internet Protocol (IP) is the most important protocol in which of the following layer

38. Which protocol uses window flow system

39. In an IPv4 header the IP Flag is set to D. What does it mean?

40. Which of the following TCP/IP layer provides the end-to-end data transfer by delivering data from an application to its remote peer?

41. Which of the following is a VALID use of IP address 14.0.0.0/8?

42. Layer 4 of the OSI model contains the TCP and UDP protocols, what is FALSE about UDP?

43. Which of the following protocol messages belong to STD 5?

44. TCP/IP reference model contains how many layers

45. Which of the following is NOT a protocol associated with the TCP/IP transport layer?

46. Which of the following is TRUE about Interior Gateway Protocols (IGPs)?

47. Which of the following is NOT a valid Dynamic Host Configuration Protocol (DHCP) message type?

48. Based on the provided answers, what is the best INCORRECT answer for ICMP?

49. Which of the following is a connectionless network socket ?

50. Which of the following correctly define maximum transmission unit (MTU)?

51. Who invented TCP/IP?

52. What layer in the TCP/IP stack is equivalent to the Transport layer of the OSI model?

53. Which of the following is not a valid TCP/IP protocol layer ?

54. Which of the following socket bypass the normal TCP/IP processing?

55. Which of the following is not true regarding the traceroute application?

56. Which of the following is a VALID use of IP address 0.0.0.0/8?

57. Which of the following protocol messages belong to STD 6?

58. VERSION, IHL, TOS etc are valid properties of which of the following?

59. Which of the following protocols was designed to overcome the weaknesses of RARP (Reverse Address Resolution Protocol)?

60. What is the maximum size of RIP datagrams?

61. What is binary 00011000.01001100.01111001.00001010 equivalent to in Decimal?

62. Which of the following is incorrect about an IPv4 address?

63. Which of the following is NOT a protocol associated with the TCP/IP internetwork layer?

64. A TCP header should contain a:

65. Which of the following is a VALID use of IP address 24.0.0.0/8?

66. 06-00-00-00-00-00 is Universally administered MAC address

67. A switch will forward a unicast frame through all of its ports (except for the port that originated the frame)

68. 06-00-00-00-00-00 is Unicast MAC Address

69. In TCP/IP protocol suite,where does ARP fall?

70. What is the binary value of hex BF?

71. How many bits are used to represent an IPv4 address?

72. What is the maximum life time of an entry in the Dynamic ARP cache?

73. Which Protocol is used to obtain the MAC address from a given IP address?

74. TCP is less reliable but faster than UDP.

75. What is the top-most level of the Internet domain name hierarchy called?

76. Which statements are true regarding UDP?

77. Which protocol does the ping command use when attempting to test whether a remote host is running?

78. You have a Class A network address with 60 subnets. You need to add 40 new subnets in the next two years and still allow for the largest possible number of host IDs per subnet. Which subnet mask should you assign?

79. Which of the following Protocols is used for transferring electronic mail?

80. How many subnets are available in a class B network with subnet mask of 255.255.255.0?

81. Which technique enables a single network address to span multiple physical networks?

82. How can you prevent a DHCP server from assigning an IP address to a DHCP client when that address is within the range of addresses defined in a DHCP scope?

83. In which class of addresses does the first octet specify the network ID and the last three octets specify the host ID?

84. Your network has an IP of 150.150.0.0 and you need to divide it into multiple subnets. You need 600 host IDs for each subnet, with the largest amount of subnets available. Which subnet mask should you assign?

85. Which Protocol is used to find the IP address from the name of a website/host?

86. Which protocol matches the remote host's physical address to a given IP address?

87. Which protocols does SNMP use when sending messages between subnets?

88. What is the network ID of IP address 172.30.60.0/20?

89. Which IP address class does the following IP address belong to? 78.34.6.90

90. If you have a subnet mask of /27 for a class C network, how many subnets and host per subnet will you get?

91. How is a subnet mask specified for supernetting?

92. What does the HOSTS file contain?

93. What kind of message can an SNMP agent generate?

94. Which one of the following addresses can be used as a host address for the subnet 200.100.10.64/27?

95. How does ARP work when attempting to resolve the IP address of a destination host located on a different subnet?

96. What is maximum number of hosts allowed on subnet 172.20.64.0/23?

97. Which of the following is a valid unicast IP address?

98. Which of the following is a valid host IP address?

99. If UDP receives datagrams that are not in a sequence, what will it do?

100. Your Company has a class C network. Your company requires 6 usable subnets, with 20 hosts in each subnet. Which subnet mask will you use?

101. What is the class of IP address 128.10.15.24?

102. To which subnet does the IP address 10.120.100.255/18 belong to?

103. After a host name is resolved to an IP address, what does a local host need to do next to communicate with the target host if the target host resides on the same subnet?

104. Which are the two valid IP addresses in the subnets of 192.168.10.0 network with a subnet mask of 255.255.255.248?

105. What is the purpose of a DHCP relay agent?

106. How many hosts can you assign with a Class C network address using a subnet mask of 255.255.255.192?

107. What is the port number used by HTTP?

108. Which of the following indicates a local class C subnet?

109. In TCP/IP, what is the Windowing mechanism used for?

110. What is the binary value of 157?

111. Which Protocol uses port number 21?

112. You have a Class B network and you plan to break it up into seven subnets. One subnet will be connected to the Internet, but you want all computers to have access to the Internet. How should you assign the subnet mask on the router for the networks?

113. At what point does a DHCP client attempt to renew its lease?

114. When is supernetting required?

115. Which of the following Protocols can automatically provide IP address, subnet mask, default gateway and DNS server's IP address to a client on a network?

116. What is the maximum number of valid IP addresses in a class C network?

117. What is the purpose of the metric value in a routing table?

118. Which protocol is used to transfer information between a WWW server and a WWW browser?

119. You have 350 computers spread across eight subnets with two DHCP servers. You want each workstation to receive an IP address even when one of the DHCP servers is down. What should you do?

120. Which file transfer Protocol uses UDP as a transport Protocol and lacks security?

121. Which of the following Protocols use port number 25?

122. What TCP/IP configuration settings are required for a computer to be able to communicate outside of its local subnet?

123. On which layer of OSI (Open Systems Interconnection) model do TCP and UDP work?

124. Which utility should you use to test whether TCP/IP has been initialized on a computer?

125. Which class address has the beginning range of 192.0.0.1 and the ending range of 223.255.255.254?

126. What is the broadcast address of IP address 172.16.10.0 with a subnet mask of 255.255.252.0?

127. What is the maximum number of usable subnets that you can create in a class B network?

128. Which of the following is definitely a broadcast address for a class C network having Subnet Mask 255.255.255.0?

129. What is the default time-to-live (TTL) value for an entry in the ARP cache?

130. How many hosts can a Class A network accommodate?

131. Which of the following addresses are reserved for multicasting?

132. What is the default subnet mask for a Class C network?

133. Which of the following is a Multicast Address?

134. Which address classes cannot be assigned to host computers?

135. Which of the following address is reserved for loopback tests?

136. How can a host resolve an IP address of another host located on the same subnet without needing to send a broadcast?

137. How do you resolve IP addresses locally?

138. Which of the following Protocols is used as a security Protocol and is also one of the secure encryption systems used in communication?

139. What are some of the keywords that can be included in your LMHOSTS file?

140. By default how many subnets can you create with a Class B network address using a subnet mask of 255.255.252.0?

141. Assuming that none of the hosts has cached the entries, how many ARP broadcasts would be required for a host on one subnet to communicate with a host on a remote subnet that is separated by a single router?

143. Which of the following is a universal and uniform numeric identifier for each computer on the network?

144. What must be specified as part of a client reservation?

145. How many hosts can you assign with a Class C network address using a subnet mask of 255.255.255.192..

146. State whether true or false. TCP is less reliable but faster than UDP.

147. What is the binary value of hex 9F?

148. Which of the following ranges are reserved as private addresses?

149. A popular network protocol is ____, which today is the backbone of the internet.

150. If i simplify the address 2001:0000:0000:00fe:0000:0000:0000:cdef, i get ________.