QUESTION 11
Which two statements regarding Cisco 6PE operations are correct? (Choose two.)
A. The top label in the label stack is assigned by MP-BGP, and it is used to reach the egress PE.
B. The inner label in the label stack is assigned by MP-BGP, and it is used for IPv6 forwarding at the egress PE.
C. The top label in the label stack is assigned by LDP, and it is used to reach the egress PE.
D. The inner label in the label stack is assigned by LDP, and it is used for IPv6 forwarding at the egress PE
Answer: BC
QUESTION 12
Which Cisco IOS XR BGP configuration command is required to enable MP-BGP to carry IPv6 VPN routes?
A. address-family ipv4 unicast
B. address-family ipv6 unicast
C. address-family vpnv4 unicast
D. address-family vpnv6 unicast
Answer: D
QUESTION 13
Which statement regarding the Cisco IOS BGP configuration exhibit is correct? 
A. None of the routers will receive IPv4 BGP routes.
B. Only the 172.16.2.1 and 172.16.3.1 neighbors will receive both VPNv4 routes and IPv4 BGP routes.
C. Only the 172.16.3.1 neighbor will receive both VPNv4 routes and IPv4 BGP routes.
D. All three neighbors (172.16.1.1, 172.16.2.1, and 172.16.3.1) will receive both VPNv4 routes and IPv4 BGP routes.
E. All three neighbors (172.16.1.1, 172.16.2.1, and 172.16.3.1) will receive IPv4 BGP routes.
Answer: C
QUESTION 14
When implementing MPLS Layer 3 VPNs with customers running OSPF as the CE-PE routing protocol, the service provider MPLS backbone looks like what to the CE routers?
A. the backbone (Area 0)
B. an external routing domain
C. a superbackbone that is transparent to the CE OSPF routers
D. a transit area (similar to a transit area for supporting virtual links)
Answer: C
QUESTION 15
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?
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 16
On Cisco IOS and IOS XE Layer 3 MPLS VPN implementations, when redistributing the customer RIP routes into MP-BGP, the RIP metric is copied into which BGP attribute?
A. local preference
B. weight
C. MED
D. extended community
Answer: C
QUESTION 17
Which option is used as a loop prevention mechanism to support MPLS VPN customers with multihomed sites?
A. BGP down bit
B. sham links
C. AS override
D. SOO extended BGP community
E. allowas-in
Answer: D
QUESTION 18
Refer to the partial Cisco IOS XR PE router configuration exhibit for supporting a Layer 3 MPLS VPN customer using BGP as the CE-to-PE routing protocol. 
The service provider AS number is 64500, the customer AS number is 64501, and the customer CE router is 10.1.1.1. What is missing in the configuration?
A. The route distinguisher has not been configured under router bgp 64500 vrf Customer_A.
B. The import and export route targets have not been configured under router bgp 64500 vrf Customer_A.
C. The 10.1.1.1 BGP neighbor has not been activated for IPv4 unicast routing.
D. The 10.1.1.1 BGP neighbor has not been activated for the VPNv4 address family.
Answer: A
QUESTION 19
Based on the Cisco IOS XR VRF configuration exhibit, Which two data flows between the MPLS VPNs will be allowed? (Choose two.) 
A. The CustomerA central site can communicate with the CustomerB central site.
B. The CustomerA central site can communicate with all CustomerA sites.
C. The CustomerA central site can communicate with all CustomerB sites.
D. The CustomerA sites can communicate with all CustomerB sites.
Answer: AB
QUESTION 20
Refer to the partial Cisco IOS XR PE router VRF configuration exhibit. 
To implement a central-service VPN supporting both customer1 and customer2, what will be the required corresponding VRF configuration on the central-service-server PE router?
A. vrf central-service-server
address-family ipv4 unicast
import route-target
3:1
2:2
export route-target
3:1
2:1
!
B. vrf central-service-server
address-family ipv4 unicast
import route-target
3:1
2:1
export route-target
3:1
2:2
!
C. vrf central-service-server
address-family ipv4 unicast
import route-target
3:1
1:1
1:2
export route-target
3:1
1:1
1:2
!
D. vrf central-service-server
address-family ipv4 unicast
import route-target
3:1
1:1
1:2
2:1
2:2
export route-target
3:1
1:1
1:2
2:1
2:2
!
Answer: A
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