Which network addresses should you assign?

Your company is designing its public network. The network will use an IPv4 range of
131.107.40.0/22. The network must be configured as shown in the following exhibit.

You need to configure subnets for each segment. Which network addresses should you assign?

Your company is designing its public network. The network will use an IPv4 range of
131.107.40.0/22. The network must be configured as shown in the following exhibit.

You need to configure subnets for each segment. Which network addresses should you assign?

A.
Segment A: 131.107.40.0/23
Segment B: 131.107.42.0/24
Segment C: 131.107.43.0/25
Segment D: 131.107.43.128/27

B.
Segment A: 131.107.40.0/25
Segment B: 131.107.40.128/26
Segment C: 131.107.43.192/27
Segment D: 131.107.43.224/30

C.
Segment A: 131.107.40.0/23
Segment B: 131.107.41.0/24
Segment C: 131.107.41.128/25
Segment D: 131.107.43.0/27

D.
Segment A: 131.107.40.128/23
Segment B: 131.107.43.0/24
Segment C: 131.107.44.0/25
Segment D: 131.107.44.128/27

Explanation:

1: The corresponding CIDR notation prefix lenth is /22.
2: The next myltiple of 8 that is greater than 22 is 24. Octet 3 is interesting.
3: 24-22 = 2, so the incremental is 2^2 =4.
4: The increments in the third octer are 0,4,8,12,16,20,24,28,32,36,40,44,46, and so on.



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