Certified Network Defender (CND) — Question 1

How many layers are present in the TCP/IP model?

Answer options

• A. 10
• B. 5
• C. 4
• D. 7

Correct answer: C

Explanation

The TCP/IP model consists of 4 layers: the Link layer, Internet layer, Transport layer, and Application layer. The other options are incorrect as they refer to different models or are simply inaccurate counts of the layers in the TCP/IP architecture.