单项选择题
A. session B. network C. physical D. data link E. transport
Given an IP address 172.16.28.252 with a subnet mask of...
单项选择题Given an IP address 172.16.28.252 with a subnet mask of 255.255.240.0, what is the correct network addres?（）
A. 172.16.16.0 B. 172.16.24.0 C. 172.16.0.0 D. 172.16.28.0
Which command can be used to verify the DLCI destinatio...
单项选择题Which command can be used to verify the DLCI destination address in a Frame Relay static configuration?（）
A. show frame-relay end-to-end B. show frame-relay map C. show frame-relay lmi D. show frame-relay pvc
Which layer 2 protocol encapsulation type supports sync...
单项选择题Which layer 2 protocol encapsulation type supports synchronous and asynchronous circuis and has built-in security mechanisms?（）
A. Frame Relay B. HDLC C. x.25 D. PPP
