Gce Model Questions Vol1 2023 Computer Studies Question 37

Practice objective / multiple choice question 37 from the 2023 Gce Model Questions Vol1 Computer Studies examination.

Gce Model Questions Vol1 2023 Computer Studies Objective / Multiple Choice Medium Difficulty
Question 37 GCE_MODEL_QUESTIONS_VOL1 • 2023 • COMPUTER_STUDIES • objective

An organisation has been allocated the IPv4 address block 172.16.0.0/16. It must create subnets for three departments: Department A needs 120 hosts, Department B needs 60 hosts and Department C needs 28 hosts. Subnets must be contiguous and as small as possible. (a) Give the subnet mask for each department. (b) State the network address of each subnet if they are allocated in the order A, B, C starting from the beginning of the block. (c) How many host addresses remain unused in the original /16 block after these allocations?

Answer Options

A. Masks: A \/25 (255.255.255.128), B \/26 (255.255.255.192), C \/27 (255.255.255.224). Networks: A 172.16.0.0\/25, B 172.16.0.64\/26, C 172.16.0.128\/27. Unused addresses: 64 000.
B. Masks: A \/24 (255.255.255.0), B \/26 (255.255.255.192), C \/27 (255.255.255.224). Networks: A 172.16.0.0\/24, B 172.16.1.0\/26, C 172.16.1.64\/27. Unused addresses: 63 744.
Correct Answer C. Masks: A /25 (255.255.255.128), B /26 (255.255.255.192), C /27 (255.255.255.224). Networks: A 172.16.0.0/25, B 172.16.0.128/26, C 172.16.0.192/27. Unused addresses: 65 312.
D. Masks: A \/25 (255.255.255.128), B \/27 (255.255.255.224), C \/28 (255.255.255.240). Networks: A 172.16.0.0\/25, B 172.16.0.128\/27, C 172.16.0.160\/28. Unused addresses: 66 048.
Correct Answer
C
Correct Option:
Masks: A /25 (255.255.255.128), B /26 (255.255.255.192), C /27 (255.255.255.224). Networks: A 172.16.0.0/25, B 172.16.0.128/26, C 172.16.0.192/27. Unused addresses: 65 312.

About This Question

This is Gce Model Questions Vol1 2023 Computer Studies Question 37. It is one of the objective questions from the 2023 Gce Model Questions Vol1 Computer Studies examination.

Difficulty level: Medium .

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