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Q1. In MPLS Layer 3 VPN implementations, what is used at the PEs to transform the customer IPv4 prefixes into a unique 96-bit prefix?
A. RT
B. RD
C. VC ID
D. PW ID
E. AS number
Answer: B
Q2. Which CE-to-PE routing protocol implements the down bit as a loop prevention mechanism?
A. RIPv2
B. EIGRP
C. IS-IS
D. OSPF
E. BGP
Answer: D
Q3. In Cisco IOS XR platforms using the EVC infrastructure, which command is used to enable a Layer 2 VPN subinterface?
A. interface gi0/0/0/0.10
switchport access vlan 10
B. interface gi0/0/0/0.10
switchport mode tunnel dot1q-tunnel
C. interface gi0/0/0/0.10
switchport mode trunk
D. interface gi0/0/0/0.10
bridge-group 10
E. interface gi0/0/0/0.10 l2transport
Answer: E
Q4. 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
Q5. RAG DROP
Answer:
Q6. 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
Q7. When implementing H-VPLS with QinQ access on Cisco Metro Ethernet switches, which two commands enable the QinQ tagging? (Choose two.)
A. encapsulation dot1q {customer-vlan} second-tag {sp-vlan}
B. encapsulation dot1q {sp-vlan} second-tag {customer-vlan}
C. switchport mode dot1q-tunnel
D. switchport mode trunk
E. switchport access vlan {sp-vlan}
F. switchport access vlan {customer-vlan}
Answer: C,E
Q8. In PE7, which three statements are correct regarding the MPLS VPN configurations used to supportthe 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
Q9. Refer to the Cisco IOS XR router output exhibit, which method is being used to transport IPv6 traffic over the service provider network?
A. 6PE
B. 6VPE
C. native IPv6
D. native IPv4
E. dual stack
Answer: B
Q10. What is an advantage of using the Cisco EVC infrastructure to implement carrier-class Ethernet services that are not available on non-EVC-capable platforms?
A. PW redundancy
B. interworking support
C. PW stitching support
D. flexible frame-matching support and VLAN tag manipulation
E. local cross-connect support
Answer: D