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Which encapsulations can be configured on a serial interface 1 Ethernet...

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Wide Area Networks
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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

Answer & Solution
Correct Answer: Option C
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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