MCQs in Network Layer: Logical Addressing

MCQs in Network Layer: Logical Addressing from the book Data Communications and Networking 4th Edition by Behrouz A. Forouzan. Reviewer in Electronics Systems and Technologies (Communications Engineering).

MCQs for Network Layer: Logical Addressing
This is the MCQs in Network Layer: Logical Addressing from book the Data Communications and Networking 4th Edition by Behrouz A. Forouzan. If you are looking for a reviewer in Electronics Systems and Technologies (Communications Engineering) this will definitely help you before taking the Board Exam.

Topic Outline

  • IPv4 ADDRESSES
    • Address Space
    • Notations
    • Classful Addressing
    • Classless Addressing
    • Network Address Translation (NAT)
  • IPv6 ADDRESSES
    • Structure
    • Address Space

Begin and Good luck!

Choose the letter of the best answer in each questions.

1. Identify the class of the following IPv4 address: 4.5.6.7.

  • A)            A
  • B)            B
  • C)            C
  • D)            none of the above

2. What is the first address of a block of classless addresses if one of the addresses is 12.2.2.76/10?

  • A)            12.0.0.0
  • B)            12.2.0.0
  • C)            12.2.2.2
  • D)            none of the above

3. In IPv6, the___________ address is generally used by a normal host as a unicast address.

  • A)            provider-based unicast
  • B)            link local
  • C)            site local
  • D)            none of the above

4. Find the number of addresses in a block of classless addresses if one of the addresses is 12.2.2.7/24.

  • A)            32
  • B)            64
  • C)            256
  • D)            none of the above

5. The number of addresses in a class C block is _______.

  • A)            65,534
  • B)            16,777,216
  • C)            256
  • D)            none of the above

6. In classless addressing, the prefix length defines the _____________.

  • A)            netid
  • B)            hostid
  • C)            mask
  • D)            none of the above

7. What is the result of ANDing 255 and 15?

  • A)            255
  • B)            15
  • C)            0
  • D)            none of the above

8. In IPv6, _______ address defines a single computer.

  • A)            a unicast
  • B)            a multicast
  • C)            an anycast
  • D)            none of the above

9. What is the result of ANDing 254 and 15?

  • A)            254
  • B)            14
  • C)            0
  • D)            none of the above

10. An IPv6 address can have up to __________ colons.

  • A)            8
  • B)            7
  • C)            4
  • D)            none of the above

11. Which address could be the beginning address of a block of 16 classless addresses?

  • A)             2.4.6.5
  • B)             2.4.6.15
  • C)             2.4.6.62
  • D)             none of the above

12. Identify the class of the following IPv4 address: 229.1.2.3.

  • A)             A
  • B)             B
  • C)             D
  • D)             none of the above

13. What is the default mask for class A in CIDR notation?

  • A)             /9
  • B)             /8
  • C)             /16
  • D)             none of the above

14. What is the first address of a block of classless addresses if one of the addresses is 12.2.2.127/28?

  • A)             12.2.2.0
  • B)             12.2.2.96
  • C)             12.2.2.112
  • D)             none of the above

15. What is the default mask for class B in CIDR notation?

  • A)             /9
  • B)             /8
  • C)             /16
  • D)             none of the above

16. Identify the class of the following IPv4 address: 191.1.2.3.

  • A)             A
  • B)             B
  • C)             C
  • D)             none of the above

17. In IPv6, a ______address is used if a site with several networks uses the Internet protocols but is not connected to the Internet for security reasons.

  • A)             link local
  • B)             site local
  • C)             mapped
  • D)             none of the above

18. In IPv6, _________ address defines a group of computers.

  • A)             a unicast
  • B)             a multicast
  • C)             an anycast
  • D)             none of the above

19. The number of addresses assigned to an organization in classless addressing _______.

  • A)             can be any number
  • B)             must be a multiple of 256
  • C)             must be a power of 2
  • D)             none of the above

20. Find the number of addresses in a block of classless addresses if one of the addresses is 12.2.2.7/30.

  • A)             2
  • B)             4
  • C)             8
  • D)             none of the above

21. In IPv6, ____ address defines a group of computers with addresses that have the same prefix.

  • A)             a unicast
  • B)             a multicast
  • C)             an anycast
  • D)             none of the above

22. An organization is granted a block of classless addresses with the starting address 199.34.76.128/29. How many addresses are granted?

  • A)             8
  • B)             16
  • C)             32
  • D)             none of the above

23. An organization is granted a block of classless addresses with the starting address 199.34.76.64/28. How many addresses are granted?

  • A)             8
  • B)             16
  • C)             32
  • D)             none of the above

24. An organization is granted a block; one address is 2.2.2.64/20. The organization needs 10 subnets. What is the subnet prefix length?

  • A)              /20
  • B)              /24
  • C)              /25
  • D)              none of the above

25. What is the default mask for class C in CIDR notation?

  • A)             /24
  • B)             /8
  • C)             /16
  • D)             none of the above

26. In hexadecimal colon notation, a 128-bit address is divided into _______ sections, each _____ hexadecimal digits in length.

  • A)             8: 2
  • B)             8: 3
  • C)             8: 4
  • D)             none of the above

27. In a block, the mask is 255.255.192.0; what is the prefix length?

  • A)             /20
  • B)             /28
  • C)             /18
  • D)             none of the above

28. An organization is granted a block of classless addresses with the starting address 199.34.32.0/27. How many addresses are granted?

  • A)             8
  • B)             16
  • C)             32
  • D)             none of the above

29. Which one is not a contiguous mask?

  • A)             255.255.255.254
  • B)             255.255.224.0
  • C)             255.148.0.0
  • D)             all are

30. To make addresses more readable, IPv6 specifies ____________notation.

  • A)             dotted decimal
  • B)             hexadecimal colon
  • C)             both a and b
  • D)             none of the above

31. In a block, the prefix length is /15; what is the mask?

  • A)             255.254.0.0
  • B)             255.255.255.0
  • C)             255.255.255.128
  • D)             none of the above

32. An IPv6 address can have up to __________ hexadecimal digits.

  • A)             16
  • B)             32
  • C)             8
  • D)             none of the above

33. In IPv6, a ___________ address is an address of 96 bits of zero followed by 32 bits of IPv4 address.

  • A)             link local
  • B)             site local
  • C)             mapped
  • D)             none of the above

34. In classless addressing, the _______ is the varying part (similar to the hostid).

  • A)             suffix
  • B)             prefix
  • C)             hostid
  • D)             none of the above

35. Which address could be the beginning address of a block of 256 classless addresses?

  • A)             2.4.6.5
  • B)             2.4.6.15
  • C)             2.4.6.0
  • D)             none of the above

36. What is the result of ANDing 0 and 15?

  • A)             255
  • B)             15
  • C)             0
  • D)             none of the above

37. What is the first address of a block of classless addresses if one of the addresses is 12.2.2.76/27?

  • A)             12.2.2.0
  • B)             12.2.2.32
  • C)             12.2.2.64
  • D)             none of the above

38. An IPv4 address consists of _______ bits.

  • A)             4
  • B)             8
  • C)             32
  • D)             64

39. In classless addressing, the ______ is another name for the common part of the address range.

  • A)             suffix
  • B)             prefix
  • C)             netid
  • D)             none of the above

40. An IPv6 address is _________ bits long.

  • A)             32
  • B)             64
  • C)             128
  • D)             none of the above

41. The number of addresses in a class A block is _______.

  • A)             65,534
  • B)             16,777,216
  • C)             256
  • D)             none of the above

42. What is the last address of a block of classless addresses if one of the addresses is 12.2.2.6/30?

  • A)             12.2.2.2
  • B)             12.2.2.6
  • C)             12.2.2.7
  • D)             none of the above

43. Which address could be the beginning address of a block of 32 classless addresses?

  • A)             2.4.6.5
  • B)             2.4.6.16
  • C)             2.4.6.64
  • D)             none of the above

44. In IPv6, a _______ address is used if a LAN uses the Internet protocols but is not connected to the Internet for security reasons.

  • A)             link local
  • B)             site local
  • C)             mapped
  • D)             none of the above

45. What is the result of ANDing 192 and 65?

  • A)             192
  • B)             65
  • C)             64
  • D)             none of the above

46. In IPv4, class _______ has the greatest number of addresses in each block.

  • A)             A
  • B)             B
  • C)            C
  • D)            D

47. The first address assigned to an organization in classless addressing _______.

  • A)             must be a power of 4
  • B)             must be evenly divisible by the number of addresses
  • C)             must belong to one of the A, B, or C classes
  • D)             none of the above

48. In IPv6, a _________address comprises 80 bits of zero, followed by 16 bits of one, followed by the 32-bit IPv4 address.

  • A)             link local
  • B)             site local
  • C)             mapped
  • D)             none of the above

49. The number of addresses in a class B block is _______.

  • A)             65,536
  • B)             16,777,216
  • C)             256
  • D)             none of the above

50. What is the last address of a block of classless addresses if one of the addresses is 12.2.2.127/28?

  • A)             12.2.2.16
  • B)             12.2.2.112
  • C)             12.2.2.127
  • D)             none of the above

51. In IPv6, the ________ prefix defines the purpose of the address.

  • A)             type
  • B)             purpose
  • C)             both a and b
  • D)             none of the above

52. In a block, the prefix length is /24; what is the mask?

  • A)             255.255.255.0
  • B)             255.255.242.0
  • C)             255.255.0.0
  • D)             none of the above

53. An IPv6 address consists of ________ bytes (octets);

  • A)             4
  • B)             8
  • C)             16
  • D)             none of the above

54. An organization is granted a block; one address is 2.2.2.64/25. If the subnet prefix length is /28, what is the maximum number of subnets?

  • A)             2
  • B)             4
  • C)             8
  • D)             none of the above

Check your work.

Complete List of Chapter Quiz in Data Communications and Networking

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credit: Behrouz A. Forouzan© 2014 www.PinoyBIX.org

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