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Which encapsulations can be configured on a serial interface?
1. Ethernet
2. Token Ring
3. HDLC
4. Frame Relay
5. PPP

A. 1 and 4

B. 2 only

C. 3, 4 and 5

D. All of the above

Answer: Option C

Solution(By Examveda Team)

Ethernet and Token Ring are LAN technologies and cannot be configured on a serial interface. PPP, HDLC, and Frame Relay are layer 2 WAN technologies that are typically configured on a serial interface.

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