CompTIA Network+ (N10-008) — Question 245

A technician is configuring a static IP address on a new device in a newly created subnet. The work order specifies the following requirements:

• The IP address should use the highest address available in the subnet.
• The default gateway needs to be set to 172.28.85.94.
• The subnet mask needs to be 255.255.255.224.

Which of the following addresses should the engineer apply to the device?

Answer options

• A. 172.28.85.93
• B. 172.28.85.95
• C. 172.28.85.254
• D. 172.28.85.255

Correct answer: A

Explanation

The correct answer is A, 172.28.85.93, as it is the highest usable address in the subnet defined by the mask 255.255.255.224, which allows for 30 usable addresses. Option B (172.28.85.95) is out of range for this subnet, while options C and D (172.28.85.254 and 172.28.85.255) are reserved for special purposes (broadcast address).