Practice Quiz

CompTIA Network+ Exam Review

Category - Networking

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Which of the following Frame-Relay encapsulation commands should be used to connect a Cisco router to a non-Cisco router?
  1. R1 (config-if)# Encapsulation frame-relay dot1q
  2. R1 (config-if)# Encapsulation frame-relay isl
  3. R1 (config-if)# Encapsulation frame-relay aal5snap
  4. R1 (config-if)# Encapsulation frame-relay ietf
Explanation
Answer - D - The R1 (config-if)# Encapsulation frame-relay ietf is used to connect a Cisco router to a non-Cisco router.

Key Takeaway: The R1 (config-if)# Encapsulation frame-relay ietf uses the IETF encapsulation, instead of the default Cisco encapsulation. Additionally, in an actual configuration environment, some of the commands that follow this command specify the LMI used by the router to communicate with the Frame Relay switch.
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