CompTIA Network+ (N10-007) — Question 182

A company is expanding and building a new remote branch office. Marketing will need 78 IP addresses, finance will need 150 IP addresses, legal will need 39 IP addresses, and R&D will need 12 IP addresses. The network administrator gives the technician a network of 172.16.48.0/23 and wants the technician to use
VLSM for the design. Which of the following are possible solutions? (Choose three.)

Answer options

• A. The marketing department should receive a /25 network.
• B. The R&D department should have 172.16.49.207 as a broadcast address.
• C. The R&D department should receive a /27 network.
• D. The finance department should have 172.16.49.127 as a broadcast address.
• E. The marketing department should have usable IPs ranging from 172.16.49.129 to 172.16.49.190.
• F. The legal department should have a first usable IP address of 172.16.49.190
• G. The legal department should have usable IPs ranging from 172.16.49.129 to 172.16.49.190.
• H. The R&D department should have a last usable IP address of 172.16.49.190.

Correct answer: A, B, G

Explanation

Option A is correct because a /25 network provides 126 usable IP addresses, which is enough for the marketing department's need for 78. Option B is correct as 172.16.49.207 can be a broadcast address for a suitable subnet for the R&D department. Option G is incorrect because the range provided does not accommodate the legal department's requirement of 39 addresses properly.