Which Layer 2 protocol encapsulation type supports synchronous and asynchronous circuits and has built-in security mechanisms?
Which command can be used from a PC to verify the connectivity between hosts that connect through a switch in the same LAN?
Which command is used to enable CHAP authentication, with PAP as the fallback method, on a serial interface?
Which protocol is an open standard protocol framework that is commonly used in VPNs, to provide secure end-to-end communications?
Which term describes a spanning-tree network that has all switch ports in either the blocking or fowarding state?