Cisco 642-889 - Implementing Cisco Service Provider Next-Generation Egde Network Services Exam
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Total 126 questions
Question #6 (Topic: )
When implementing MPLS Layer 3 VPNs with customers running OSPF as the CE-PE
routing protocol, which situation will require a sham link to be implemented in the MPLS
backbone?
routing protocol, which situation will require a sham link to be implemented in the MPLS
backbone?
A. to connect customer sites in different OSPF areas
B. to connect customer sites in the same OSPF area
C. to prevent OSPF routing loops when a customer site has redundant CE-PE connections
D. if there is a backdoor link between the CE routers, to ensure that the backdoor link is used only to back up the primary connection through the MPLS VPN
Answer: D
Question #7 (Topic: )
Which option is a valid Cisco IOS XR BGP Layer 3 IPv4 MPLS VPN configuration?
A. router bgp 65001 no bgp default ipv4-unicast bgp log-neighbor-changes neighbor 1.2.3.4 remote-as 65001 neighbor 1.2.3.4 update-source Loopback0 address-family vpnv4 neighbor 1.2.3.4 activate neighbor 1.2.3.4 send-community extended exit-address-family address-family ipv4 vrf VPN redistribute ospf 100
B. router bgp 65001 no bgp default ipv4-unicast bgp log-neighbor-changes neighbor 1.2.3.4 remote-as 65001 neighbor 1.2.3.4 update-source Loopback0 address-family vpnv4 neighbor 1.2.3.4 activate exit-address-family address-family ipv4 vrf VPN redistribute ospf 100
C. router bgp 100 address-family vpnv4 unicast neighbor 2.2.2.2 remote-as 100 update-source Loopback0 address-family vpnv4 unicast ! vrf VPN_A rd 100:1 address-family ipv4 unicast redistribute ospf 100
D. router bgp 100 address-family vpnv4 unicast neighbor 2.2.2.2 remote-as 100 update-source Loopback0 address-family ipv4 unicast ! vrf VPN_A rd 100:1 address-family ipv4 unicast redistribute ospf 100
Answer: C
Question #8 (Topic: )
[Cisco-642-889-7.0/Cisco-642-889-8_2.png]
Answer: [Cisco-642-889-7.0/Cisco-642-889-8_3.png]
Question #9 (Topic: )
When configuring VPLS on the Cisco ASR 9000, which three configurations are required
under the l2vpn configuration mode? (Choose three.)
under the l2vpn configuration mode? (Choose three.)
A. bridge-group
B. bridge-domain
C. xconnect
D. vfi
E. encapsulation
Answer: A,B,D
Question #10 (Topic: )
[Cisco-642-889-7.0/Cisco-642-889-9_2.png]
[Cisco-642-889-7.0/Cisco-642-889-9_3.png]
[Cisco-642-889-7.0/Cisco-642-889-10_2.png]
[Cisco-642-889-7.0/Cisco-642-889-10_3.png]
On PE7, which three statements are correct regarding the MPLS VPN configurations used
to support the connectivity between the CE7 and CE8 sites? (Choose three.)
[Cisco-642-889-7.0/Cisco-642-889-9_3.png]
[Cisco-642-889-7.0/Cisco-642-889-10_2.png]
[Cisco-642-889-7.0/Cisco-642-889-10_3.png]
On PE7, which three statements are correct regarding the MPLS VPN configurations used
to support the connectivity between the CE7 and CE8 sites? (Choose three.)
A. The RD is 1:1
B. The import and export RTs are 1:1
C. Interface GiO/0/0/0 is associated to the "default" VRF
D. The network that connects PE7to CE7 is redistributed into multiprotocol IBGP
E. The multiprotocol IBGP routes learned have a BGP origin code of "i"
Answer: B,C,E
