Implementing Cisco SD-WAN Solutions (ENSDWI) — Question 302

What two functions describe the TCP optimization tool used in the Cisco SD-WAN? (Choose two.)

Answer options

• A. It uses TCP acknowledgment (ACK).
• B. It uses TCP selective acknowledgment (SACK).
• C. It terminates TCP connections locally at the WAN edge.
• D. It terminates TCP connections at the remote WAN edge
• E. It is used to take care of high packet loss for control traffic.

Correct answer: B, C

Explanation

Option B is correct because TCP selective acknowledgment (SACK) improves data transmission efficiency by allowing the receiver to inform the sender about all segments received, not just the last one. Option C is also correct as terminating TCP connections locally at the WAN edge reduces latency and optimizes performance, while the other options either describe different functions or are not specific to the TCP optimization tool.