Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 394

Which component of TCP defines the maximum packet size that a host interface is able to accept on ingress?

Answer options

• A. MTU
• B. PATH MTU
• C. Window size
• D. MRU

Correct answer: D

Explanation

The correct answer is D, MRU, which stands for Maximum Receive Unit, defining the largest packet size a host can accept. MTU, while related, refers to the maximum transmission unit, which can differ from the maximum size a receiver can handle. PATH MTU pertains to the maximum packet size along a network path, and window size is related to flow control in TCP, not packet size limitations.