A.broadcast， multicastB.unicast， broadcastC.broadcast， ……

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

单项选择题Which of the following is a valid representation of the following IPv6 address： 2001：0000：0000：0abc：0000：0000：000a：000b？ Choose the answer with the least number of digits.（）

A.2001：0000：0：abc：0000：0000：a：b
B.2001：：abc：：a：b
C.2001：：abc：0：0：000a：000b
D.2001：：0abc：0000：0000：a：b
E.2001：0000：0000：abc：：a：b
F.2001：：abc：0：0：a：b