单项选择题
A. CEF switching is not needed for MPLS operation.
B. CEF switching is only needed to forward labeled packets.
C. CEF switching is needed on both ingress and egress interfaces on which MPLS is enabled.
D. Interface-level CEF switching is needed only on egress interfaces that are sending IP packets on which the egress LSR performs the label imposition process.
E. Interface-level CEF switching is needed only on ingress interfaces that are receiving IP packets on which the ingress LSR performs the label imposition process.
单项选择题 Which term represents the mode that is used when the router stores log messages in RAMmemory? （）
单项选择题 In which service component of the optimize phase would you assess the routing and switchingsystem and recommend activities such as optimizing device configurations, capacity planning, ortraffic analysis? （）
单项选择题 Refer to the exhibit. A display of class maps for a configuration is shown in the exhibit. What will the class-map "all-traffic" match? （）
