单项选择题Which type of domains is interconnected using Multicast Source Discovery Protocol?()

A.PIM-SM
B.PIM-DM
C.PIM-SSM
D.DVMRP


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3.多项选择题Which three fields are optional in an OSPFv3 external LSA?()

A.Forwarding Address
B.External Route
C.Reference Link-State ID
D.Option
E.Prefix Options

4.多项选择题The network administrator is trying to add Switch1 to the network, but the 802.1Q trunk is not coming up. Switch1 was previously tested in the laboratory and its trunk configuration worked fine. What are three possible causes of this problem?()

A. The trunking configuration mode on Switch1 is set to Off.
B. The trunking configuration mode on the other end is set to On.
C. The trunking configuration mode on the other end is set to Desirable.
D. Cisco Discovery Protocol is not running on the other end.
E. There is a VTP domain name mismatch.
F. Switch1 does not support 802.1Q

5.多项选择题Which two statements are correct about Nonstop Forwarding?()

A.It allows the standby RP to take control of the device after a hardware or software fault on the active RP.
B.It is a Layer 3 function that works with SSO to minimize the amount of time a network is unavailable tousers following a switchover.
C.It is supported by the implementation of EIGRP, OSPF, RIPv2, and BGP protocols.
D.It synchronizes startup configuration, startup variables, and running configuration.
E.The main objective of NSF is to continue forwarding IP packets following a switchover.
F.Layer 2 802.1w or 802.1s must be used, as 802.1d cannot process the Layer 2 changes.
G.Routing protocol tuning parameters must be the same as the NSF parameters, or failover will beinconsistent.

6.单项选择题You are about to migrate a customer network to use a VSS. Which of these statements is true about a VSS? ()

A. The VSS switch must be the root bridge for all VLANs and is automatically designated
B. The VSS switch is defined in RFC 4318 as a managed object
C. The PAgP+ or LACP protocols are used to maintain the operational state of the VSS devices
D. A VSS interoperates with a virtual port channel
E. The 802.1Q or ISL protocols are used to maintain the operational state of the VSS devices
F. A VSS increases the size of the spanning-tree domain

7.单项选择题Which command can be used on a PE router to connect to a CE router (11.1.1.4) in VRF red?()

A.telnet 11.1.1.4 /vrf-source red
B.telnet 11.1.1.4 source /vrf red
C.telnet 11.1.1.4 /source vrf red
D.telnet 11.1.1.4 /vrf red
E.telnet 11.1.1.4 vrf red

8.单项选择题For which routes does LDP advertise a label binding?()

A.all routes in the routing table
B.only the IGP and BGP routes in the routing table
C.only the BGP routes in the routing table
D.only the IGP routes in the routing table

9.单项选择题Which command will define a VRF with name ’CCIE’ in IPv6?()

A.ip vrf CCIE
B.ipv6 vrf CCIE
C.vrf definition CCIE
D.ipv6 vrf definition CCIE

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