The company owns the address block 192.168.48.0/22 (1024 IP addresses). It needs to create sub‑nets for three departments that require at least 500, 200 and 50 usable host addresses respectively, while leaving room for future sub‑nets.

Using Variable Length Subnet Masking (VLSM), allocate the address space to the three departments, giving for each:
- the network address,
- the subnet mask in CIDR notation,
- the broadcast address.

Finally, state how many IP addresses remain unused in the original /22 after these allocations.

Question

The company owns the address block 192.168.48.0/22 (1024 IP addresses). It needs to create sub‑nets for three departments that require at least 500, 200 and 50 usable host addresses respectively, while leaving room for future sub‑nets.

Using Variable Length Subnet Masking (VLSM), allocate the address space to the three departments, giving for each:
- the network address,
- the subnet mask in CIDR notation,
- the broadcast address.

Finally, state how many IP addresses remain unused in the original /22 after these allocations.

Accepted Answer

Dept 1: 192.168.48.0/23 (broadcast 192.168.49.255); Dept 2: 192.168.50.0/24 (broadcast 192.168.50.255); Dept 3: 192.168.51.0/26 (broadcast 192.168.51.63); Unused IPs = 192

Gce Model Questions Vol1 2022 Computer Studies Question 29

Answer Options

About This Question

Master the Exam!