单项选择题Which of the following is true about the MPLS header and its EXP field size?()

A.The MPLS header is 2 bytes,and the EXP field is 3 bits long.
B.The MPLS header is 1 byte,and the EXP field is 3 bits long.
C.The MPLS header is 4 bytes,and the EXP field is 3 bits long.
D.The MPLS header is 3 bytes,and the EXP field is 3 bits long.


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1.多项选择题Which two statements are true about RED?()

A.RED randomly drops packets before the queue becomes full.
B.RED is always useful,without dependency on flow.
C.RED increases the drop rate as the average queue size increases.
D.RED has a per-flow intelligence.

2.单项选择题What is the command to configure RSVP to reserve up to one-tenth of a Gigabit link,but only allow eachindividual flow to use 1 MB/s?()

A.ip rsvp bandwidth 100000 1000
B.ip rsvp bandwidth 100000 1
C.ip rsvp bandwidth 10 1
D.ip rsvp bandwidth 1000000 1000

4.单项选择题In GLBP,which router will answer on client ARP requests?()

A.all active AVF routers as the first response is used by the client
B.the AVG router,replying with a different AVF MAC address each time
C.a random AVF router,based on a GLBP seed hash key
D.only the AVG router that received the ARP request first

5.单项选择题What is true about Unicast RPF in strict mode?()

A.It works well with a multihomed environment.
B.It will inspect IP packets that are encapsulated in tunnels, such as GRE,LT2P,or PPTP.
C.uRPF is performed within the CEF switching path.
D.There might be a problem with DHCP as Unicast RPF is blocking packets with a 0.0.0.0 sourceaddress.

6.单项选择题

On the basis of the network provided in the exhibit, all routers are configured to run EIGRP on all links. If the link between PG-R1 and PG-R2 fails, what is the maximum number of queries PG-R3 will receive for 192.168.1.0/24, assuming that all the packets sent during convergence are transmitted once (there are no dropped or retransmitted packets)?()

A. PG-R3 will receive up to four queries for 192.168.1.0/24, one each from PG-R2, PG-R4, PGR5,and PG-R6.
B. PG-R3 will receive up eight queries for 192.168.1.0/24, one from PG-R2, two from PG-R4,three from PG-R5, and four from PG-R6.
C. PG-R3 will receive one query for 192.168.1.0/24, since the remote routers, PG-R4, PG-R5, and PG-R6, are natural stubs in EIGRP.
D. PG-R3 will not receive any queries from PG-R2, because there are no alternate paths for 192.168.1.0/24.

7.多项选择题Which two statements about SA caching are true?()

A.Caching allows pacing of MSDP messages.
B.Caching reduces join latency.
C.Caching should not be done by an MSDP speaker.
D.Caching is used to update the BGP MDT address family.

8.多项选择题Which two are differences between IGMPv2 and IGMPv3 reports?()

A.IGMPv3 has the ability to include or exclude source lists.
B.All IGMPv3 hosts send reports to destination address 224.0.0.22.
C.Only IGMPv2 reports may contain multiple group state records.
D.All IGMPv3 hosts send reports to destination address 224.0.0.23.
E.IGMPv2 does not support the Leave Group message.

9.单项选择题Which command is used to enable SSM with the range 232.0.0.0 - 255.0.0.0?()

A.ip pim ssm
B.ip pim ssm 232.0.0.0 255.0.0.0
C.ip pim ssm range 50
D.access-list 50 permit 232.0.0.0 15.255.255.255
E.ip pim enable default

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Two routers configured to run BGP have been connected to a firewall, one on the inside interface and one on the outside interface. BGP has been configured so the two routers should peer, including the correctBGP session endpoint addresses and the correct BGP session hop-count limit EBGP multihop. What is agood first test to see if BGP will work across the firewall?()

题型:单项选择题

On the basis of the network provided in the exhibit, all routers are configured to run EIGRP on all links. If the link between PG-R1 and PG-R2 fails, what is the maximum number of queries PG-R3 will receive for 192.168.1.0/24, assuming that all the packets sent during convergence are transmitted once (there are no dropped or retransmitted packets)?()

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Which three options are valid ways to filter routes from a BGP peer?()

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Choose two commands that are required to enable multicast on a router, when it is known that thereceivers use a specific functionality of IGMPv3.()

题型:多项选择题

Based on the exhibit presented. What will be the objective of this route map when applied to traffic passing through a router?()

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Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree ProtocolIEEE 802.1 D?()

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Which of these best describes the actions taken when a VTP message is received on a switch configuredwith the VTP mode "transparent"?()

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Which types of prefixes will a router running BGP most likely advertise to an IBGP peer, assuming it is notconfigured as a route reflector?()

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In Layer 2 topologies, spanning-tree failures can cause loops in the network. These unblocked loops cancause network failures because of excessive traffic. Which two Catalyst 6500 features can be used to limitexcessive traffic during spanning-tree loop conditions?()

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Which command is used to enable SSM with the range 232.0.0.0 - 255.0.0.0?()

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