单项选择题

Which of the following events would not explain excessive CPU utilization？（）

A.A large number of BGP sessions
B.A large BGP table
C.A router is configured with the following command： ip route 0.0.0.0 0.0.0.0 fa 0/1
D.All interface buffers are continually in use
E.A flapping interface
F.The router sends a large number of ARP requests

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多项选择题

Which of the following statements are true for routers but not true for Layer 3 Ethernet switches？（Choose all that apply.）（）

A.May have Ethernet as well as non-Ethernet interfaces
B.Traditionally used as a standalone device for inter-VLAN communication
C.Makes use of TCAMs
D.Uses subinterfaces to define trunks
E.Can use both Layer 2 and Layer 3 to make forwarding decisions
F.Allows the definition of Switched Virtual Interfaces（SVI）

多项选择题

You are using NBAR to get a statistical baseline for the applications running on your network butdiscover that some applications are not being recognized. Which of the following are possiblesolutions？（Choose all that apply.）（）

A.Use the ip nbar pdlm command to allow NBAR to reference a new PDLM in flash memory
B.If NBAR doesn’t recognize certain applications you must contact Cisco and ask them to emailyou a new PDLM for that application
C.Use the ip nbar port-map command to allow NBAR to recognize certain applications with anev/port number
D.The applications not being recognized can be rerouted to an NBAR collector， which has a morecomplete list of applications
E.Use the copy nbar flash： command to download a new PDLM file to flash
F.Use the ip nbar pdlm command to download a new NBAR reference file from the Cisco website

多项选择题

Which of the following are troubleshooting targets common to both site-to-site and remote-accessVPNs？（Choose all that apply.）（）

A.Routing loops
B.Misconfiguration of VPN end points
C.Overiapping IP address space
D.DMVPN
E.User profiles
F.MTU