TCP IP PROTOCOL MCQs - Data Communication and Networking

1. An IP packet is called a _____________.

user datagram
segment
datagram
none of the above

2. A TCP packet is called a _____________.

user datagram
segment
datagram
none of the above

3. A UDP packet is called a _____________.

user datagram
segment
datagram
none of the above

4. An IP packet is encapsulated in a _____________.

data link frame
network layer packet
physical layer packet
none of the above

5. A TCP packet is encapsulated in a(n) _____________.

data link frame
IP datagram
physical layer packet
none of the above

6. A UDP packet is encapsulated in a(n) _____________.

data link frame
IP datagram
physical layer packet
none of the above

7. An ARP packet is encapsulated in a(n) _____________.

data link frame
IP datagram
physical layer packet
none of the above

8. A RARP packet is encapsulated in a(n) _____________.

data link frame
IP datagram
physical layer packet
none of the above

9. An ICMP packet is encapsulated in a(n) _____________.

data link frame
IP datagram
physical layer packet
none of the above

10. An IGMP packet is encapsulated in a(n) _____________.

data link frame
IP datagram
physical layer packet
none of the above

11. An application-layer packet is encapsulated in a(n) _____________.

data link frame
IP datagram
TCP or UDP packet
none of the above

12. An IP address is _________ bits.

24
32
48
none of the above

13. An IP address is _______ bytes in dotted decimal notation.

3
4
5
none of the above

14. A class B address starts with the _________bit(s).

0
10
110
1111

15. A class E address starts with the _________bit(s).

0
10
1110
1111

16. A class C address starts with the _________bit(s).

0
10
110
1110

17. A class A address starts with the _________bit(s).

0
10
1110
1111

18. A class D address starts with the _________bit(s).

0
10
1110
1111

19. What is the class of the address 227.78.19.21?

A
B
C
D

20. What is the class of the address 130.8.119.1?

A
B
C
D

21. What is the class of the address 10.11.1.21?

A
B
C
D

22. What is the class of the address 200.66.10.21?

A
B
C
D

23. What is the class of the address 248.22.33.1?

A
B
C
E

24. What is the netid of the address 227.78.19.21?

227
227.78
227.78.19
none of the above

25. What is the netid of the address 130.8.119.1?

130
130.8
130.8.119
none of the above

26. What is the netid of the address 12.11.1.21?

12
12.11
12.11.1
none of the above

27. What is the netid of the address 200.66.10.21?

200
200.66
200.66.10
none of the above

28. What is the hostid of the address 248.22.33.1?

22.33.1
33.1
1
none of the above

29. What is the hostid of the address 227.78.19.21?

78.19.21
19.21
21
none of the above

30. What is the hostid of the address 130.8.119.1?

8.119.1
119.1
1
none of the above

31. What is the hostid of the address 12.11.1.21?

11.1.21
1.21
21
none of the above

32. What is the hostid of the address 200.66.10.21?

66.10.21
10.21
21
none of the above

33. What is the address of the network to which the host 248.22.33.1 is connected (no subnetting)?

248.22.33.0
248.22.0.0
248.0.0.0
none of the above

34. What is the address of the network to which the host 227.78.19.21 is connected (no subnetting)?

227.78.19.0
227.78.0.0
227.0.0.0
none of the above

35. What is the address of the network to which the host 130.8.119.1 is connected (no subnetting)?

130.8.119.0
130.8.0.0
130.0.0.0
none of the above

36. What is the address of the network to which the host 12.11.1.21 is connected (no subnetting)?

12.11.1.0
12.11.0.0
12.0.0.0
none of the above

37. What is the address of the network to which the host 200.66.10.21 is connected (no subnetting)?

200.66.10.0
200.66.0.0
200.0.0.0
none of the above

38. The network address in class C (without subnetting) has _______ zero(s) in decimal notation.

3
2
1
none of the above

39. The network address in class A (without subnetting) has _______ zero(s) in decimal notation.

3
2
1
none of the above

40. The network address in class B (without subnetting) has _______ zero(s) in decimal notation.

3
2
1
none of the above

41. The network address in Class E (without subnetting) has _______ zero(s) in decimal notation.

3
2
1
none of the above

42. The network address in Class D (without subnetting) has _______ zero(s) in decimal notation

3
2
1
none of the above

43. The natural mask for class A is _______________.

255.255.255.0.
255.255.0.0
255.0.0.0
none of the above

44. The natural mask for class B is _______________.

255.255.255.0.
255.255.0.0
255.0.0.0
none of the above

45. The natural mask for class C is _______________.

255.255.255.0.
255.255.0.0
255.0.0.0
none of the above

46. The natural mask for class D is _______________.

255.255.255.0.
255.255.0.0
255.0.0.0
none of the above

47. The natural mask for class E is _______________.

255.255.255.0.
255.255.0.0
255.0.0.0
none of the above

48. Using a host address 195.21.43.65 and the mask 255.255.255.192, the subnetwork address is ___________

195.21.43.0
195.21.0.0.
195.21.43.64
none of the above

49. Using a host address 140.78.3.45 and the mask 255.255.255.0, the subnetwork address is ___________.

140.70.0.0
140.78.3.0
140.78.0.0
none of the above

50. Using a host address 112.8.13.145 and the mask 255.255.0.0, the subnetwork address is ___________.

112.8.13.0
112.8.0.0
112.0.0.0
none of the above

51. IP addresses without subnetting have _________ level(s) of hierarchy.

3
2
1
none of the above

52. IP addresses with subnetting have _________ level(s) of hierarchy.

3
2
1
none of the above

53. Masking can be used only in _________ class(es).

3
2
1
none of the above

54. Masking is not used in class(es) ___________.

A and B
B and C
C and D
D and E

55. The length of an IP header is _________ bytes.

20
20-40
20-60
none of the above

56. If the value of HLEN in an IP packet is 0101, the header is _________ long.

5
20
60
none of the above

57. If the value of HLEN in an IP packet is 1100, the option field is _________ long.

28
20
40
none of the above

58. The field in the IP packet header that defines the number of hops a packet can travel before being dropped is called ___________.

flags
time to live
offset
none of the above

59. The protocol used to report a problem in the IP packet is called _______.

IGMP
ICMP
ARP
none of the above

60. The size of the header in the UDP packet is _________ bytes.

8
16
4
none of the above

61. A source port address in UDP is only _________ byte(s).

2
1
4
none of the above

62. A destination port address in UDP is only _________ byte(s).

2
1
4
none of the above

63. A source or destination port address in UDP can define up to _______ ports.

16
48
32
none of the above

64. The length of the TCP header without options is _______ bytes.

40
20
60
none of the above

65. The length of the TCP header is _______ bytes.

20-40
20-60
0-60
none of the above

66. The length of the TCP options is _______ bytes.

20-40
0-40
0-60
none of the above

67. When the value of HLEN field in TCP is 5, there are_______ bytes of options.

0
20
40
none of the above

68. The length of the sequence number field in TCP is _______ byte(s).

1
2
4
none of the above

69. The length of the acknowledgment number field in TCP is _______ byte(s).

1
2
4
none of the above

70. The length of the window size field in TCP is _______ byte(s).

1
2
4
none of the above

71. The maximum value of the sequence number in TCP is _______.

2¹⁶ - 1
2²⁴ - 1
2³² - 1
none of the above

72. The maximum value of the acknowledgment number in TCP is _______.

2¹⁶ - 1
2²⁴ - 1
2³² - 1
none of the above

73. The maximum value of the window size in TCP is ___________.

2¹⁶ - 1
2²⁴ - 1
2³² - 1
none of the above

74. The maximum value of the urgent pointer in TCP is ___________.

2¹⁶ - 1
2²⁴ -1
2³²-1
none of the above

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Data Communication and Networking – TCP IP PROTOCOL MCQs