CompTIA Network+ (N10-008) — Question 54

A network technician is manually configuring the network settings for a new device and is told the network block is 192.168.0.0/20. Which of the following subnets should the technician use?

Answer options

• A. 255.255.128.0
• B. 255.255.192.0
• C. 255.255.240.0
• D. 255.255.248.0

Correct answer: C

Explanation

The correct subnet mask, 255.255.240.0, corresponds to a /20 prefix, which allows for 16 subnets within the 192.168.0.0 network block. The other options either provide too few or too many subnets for the specified network address, making them unsuitable for this configuration.