Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) — Question 22

Which transport layer protocol is used to form LDP sessions?

Answer options

• A. UDP
• B. SCTP
• C. TCP
• D. RDP

Correct answer: C

Explanation

The correct answer is TCP, as it provides reliable, ordered, and error-checked delivery of data, which is essential for LDP sessions. UDP, SCTP, and RDP do not meet the reliability and connection-oriented requirements needed for LDP communication.