单项选择题
What is a global command?（）
A. A command that is available in every release of IOS, regardless of the version or deployment status.
B. A command that can be entered in any configuration mode.
C. A command that is universal in application and supports all protocols.
D. A command that is implemented in all foreign and domestic IOS version.
E. A command that is set once and affects the entire router.
相关考题
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单项选择题
What feature of a networks switch allows an administrative to create separate broadcast domains?（）
A. Store-and-forward switching
B. Microsegmentation
C. Transparent bridging
D. Fragment-free switching
E. Virtual LANs
F. Cut-through switching -
单项选择题
Which of the following options lists the steps in PPP session establishment in the correct order?（）
A. Optional authentication phase, link establishment phase, network layer protocol phase.
B. Network layer protocol phase, link establishment phase, optional authentication phase.
C. Network layer protocol phase, optional authentication phase, link establishment phase.
D. Link establishment phase, network layer protocol phase, optional authentication phase.
E. Link establishment phase, optional authentication phase, network layer protocol phase.
F. Optional authentication phase, network layer protocol phase, link establishment phase. -
单项选择题
Which Frame Relay feature is responsible for transmitting keepalives to ensure that the PVC does not shut down because of inactivity?（）
A. DLCI
B. BECN
C. FECN
D. LMI
E. CIR
F. DE
