单项选择题

Which PPP subprotocol negotiates authentication options?（）

A. NCP
B. LCP
C.ISDN
D.DLCI
E.SLIP

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单项选择题

What is the result of issuing the frame-relay map ip 192.168.1.2 202 broadcast command?（）

A.defines the source IP address that is used in all broadcast packets on DLCI 202
B.defines the DLCI that is used for all packets that are sent to the 192.168.1.2 IP address
C.defines the destination IP address that is used in all broadcast packets on DLCI 202
D.defines the DLCI on which packets from the 192.168.1.2 IP address are received

单项选择题

What is the first 24 bits in a MAC address called?（）

A. NIC
B. BIA
C. OUI
D. VAI