Which two statements describe characteristics of HDLC on Cisco routers? (Choose two.)
A. It supports multiple Layer 3 protocols.
B. It supports multiplexing.
C. It supports only synchronous interfaces.
D. It supports authentication.
Which two statements describe characteristics of HDLC on Cisco routers? (Choose two.)
A. It supports multiple Layer 3 protocols.
B. It supports multiplexing.
C. It supports only synchronous interfaces.
D. It supports authentication.