單項選擇題Which of the following characteristics applies only to OSPFv3 and not to OSPFv2?()

A.Several processes can exist simultaneously
B.Requires direct connectivity from the backbone area to all other areas
C.Has the same packet types
D.Can support multiple subnets on a single link
E.Uses a hierarchical structure divided into areas
F.Adjacencies formed with neighbors


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1.多項選擇題You issue the command show process memory ∣ include BGP and notice that BGP is consuming alarge percentage of the router’s memory. Which of the following steps would result in lowering theamount of memory being consumed by BGP?(Choose all that apply.)()

A.Filter unneeded BGP routes
B.Run BGP on a different platform that already has more memory
C.Upgrade the router memory
D.Increase the BGP update timer
E.Compress the BGP table
F.Use a default route instead of maintaining a full BGP table

2.多項選擇題Which of the following types of attacks does DHCP snooping prevent?(Choose all that apply.)()

A.Attacker sends multiple DHCP requests flooding DHCP server
B.Attacker connects rogue server initiating DHCP requests
C.Attacker connects rogue server replying to DHCP requests
D.Attacker sends DHCP jam signal causing DHCP server to crash
E.Attacker sends gratuitous ARP replies, thereby jamming the DHCP server
F.Attacker sends unsolicited DHCP replies, thereby jamming the DHCP server

4.多項選擇題Which of the following router models will support 1000 tunnels?()

A.2811
B.2801
C.2851
D.2821
E.1841
F.3825

5.單項選擇題Which of the following is not a typical maintenance task within a network maintenance model?()

A.Providing technical customer support
B.Changing configurations
C.Updating software
D.Monitoring network performance
E.Replacing hardware
F.Scheduling backups

6.單項選擇題Which of the following correctly fills in the missing words of this sentence: An ARP request uses aaddress, whereas an ARP reply uses a address.()

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

7.單項選擇題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

8.多項選擇題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)

9.多項選擇題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

10.多項選擇題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

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