Which of the following is not a typical maintenance task within a network maintenance model？（）

单项选择题Whichofthefollowingcorrectlyfillsinthemissingwordsofthissentence：AnARPrequestusesaaddress，whereasanARPreplyusesaaddress.（）

A.broadcast， multicast
B.unicast， broadcast
C.broadcast， unicast
D.multicast， unicast
E.broadcast， broadcast
F.unicast， multicast

单项选择题WhichofthefollowingeventswouldnotexplainexcessiveCPUutilization？（）

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

多项选择题WhichofthefollowingstatementsaretrueforroutersbutnottrueforLayer3Ethernetswitches？（Chooseallthatapply.）（）

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YouareusingNBARtogetastatisticalbaselinefortheapplicationsrunningonyournetworkbutdiscoverthatsomeapplicationsarenotbeingrecognized.Whichofthefollowingarepossiblesolutions？（Chooseallthatapply.）（）

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Whichofthefollowingaretroubleshootingtargetscommontobothsite-to-siteandremote-accessVPNs？（Chooseallthatapply.）（）

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