JNCIA-Junos: Juniper Networks Certified Associate – Junos (legacy) — Question 2

Which two statements are true about TCP communication? (Choose two.)

Answer options

• A. The receiver acknowledges the final packet in each communications stream.
• B. The receiver adds sequencing numbers to the packets received.
• C. The sender adds sequencing numbers to the packets it sends.
• D. The receiver acknowledges each packet it receives from the sending device.

Correct answer: A, C

Explanation

Option A is correct because the receiver does acknowledge the final packet in a TCP session to ensure all data has been received. Option C is also correct as the sender assigns sequencing numbers to maintain the order of packets. Options B and D are incorrect; the receiver does not add sequencing numbers, and while it acknowledges packets, it does not acknowledge each one individually in the same way as described.