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
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