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Q1. In which three ways do PE routers manage multiple customers in MPLS VRF environments? (Choose three.) 

A. Route targets are configured that allow the PE to uniquely identify the customer routes in MP-BGP 

B. PE routers use route distinguishers to tag routes for importing and exporting into customer VRFs. 

C. PE routers use PE-CE routing protocols to manage routing with client VRF devices. 

D. PE routers use route targets to tag routes for importing and exporting into customer VRFs. 

E. Route distinguishes are configured that allow the PE to uniquely identify the customer routes in MP-BGP. 

F. PE routers use PE-PE routing protocols to manage routing with client VRF devices. 

Answer: C,D,E 


Q2. A network engineer is responsible for implementing a solution with Cisco IOS XR Software that ensures continuous forwarding during a control plane failure. Which two technologies should the engineer consider? (Choose two.) 

A. IP FRR 

B. NSR 

C. graceful restart 

D. BFD 

E. TE FRR 

Answer: B,C 


Q3. Refer to the exhibit. R1 and R2 are multicast routers running PIM over Serial1/0. The PIM adjacency on R1 is not forming with the given configuration. What command can be entered on R1 to resolve the issue? 

A. no access-list 100 deny 103 any any 

B. no access-list 100 deny udp any anyeq 103 

C. no access-list 100 deny ip any host 224.0.0.1 

D. no access-list 100 deny ip any host 224.0.0.2 

Answer: A 

Explanation: 

All PIM protocols share a common control message format. PIM control messages are sent as raw IP datagrams (protocol number 103), either multicast to the link-local ALL PIM 

ROUTERS multicast group, or unicast to a specific destination. 

Reference: http://www.metaswitch.com/resources/what-is-protocol-independent-multicast-pim 


Q4. An engineer has just configured IOS-XR with out-of-band MPP. Which are the three results that will occur? (Choose three.) 

A. Management traffic to RP from all non-MPP interfaces is dropped 

B. RP/DRP Ethernet Interfaces are not default out-of-band interfaces. 

C. MPP configuration changes doesn’t affect active sessions established before the changes 

D. Interfaces configured for out-of-band MPP are still part of global routing/forwarding 

E. If MPP is disabled and a protocol is activated, all interfaces cannot pass traffic 

F. LPTS will provide rate limiting 

Answer: A,C,F 

Explanation: https://supportforums.cisco.com/document/93456/asr9000xr-local-packet-transport-services-lpts-copp 


Q5. Which are the three characteristics of SDR? (Choose three) 

A. The logical router can span across chassis. 

B. Each logical router has a distinct fabric and system controller module. 

C. Owner SDR can be reloaded, without affecting all non-SDRs. 

D. The logical router has dedicated route processor. 

E. The logical router can share line cards. 

F. The fabric and system controller module are shared by all logical routers. 

Answer: A,D,F 


Q6. Refer to the exhibit. 

ABC and XYZ MPLS VPN customers are accruing Internet access. Both CEs are sending traffic to the Internet. Which statement about their connectivity is true? 

A. Both CEs will have connectivity. 

B. Only CE-XYZ will have connectivity. 

C. Neither CEs will have connectivity, as both CEs are using the same NATed subnet. 

D. Only CE-ABC will have connectivity. 

E. Neither CEs will have connectivity, as IAR does not have route back to the NATed subnet. 

Answer: D 


Q7. DRAG DROP 

Refer to the exhibit. 

PE1 and PE2 has a Layer 2 VPN over a GRE tunnel. This GRE tunnel built between P1 and P2 has LDP enabled. Consider a packet capture of the packets from CE1 and CE2 at P1 and R1 link. Drag the headers on the left and drop them on the right in the order of the encapsulation, starting from the inner header (at the top) to the outer header (at the bottom). 

Answer: 


Q8. A network engineer is designing the BGP architecture with a requirement of preventing the AS 65001 from becoming a Transit AS path, using the following configuration: 

router bgp 65000 

neighbor 10.0.0.1 route-map BGP-ROUTE-POLICY in 

The goal is to prevent routes learned from 10.0.0.1 from being advertised to any other eBGP peering in the AS 65000. What command should be used within the route map to achieve this goal while keeping existing route policies in place? 

A. set community no-export additive 

B. set community no-advertise 

C. set community no-advertise additive 

D. set community no-export 

Answer: C 

Explanation: 

Reference: http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/26634-bgp-toc.html 


Q9. Which OSPF feature allows the router to recompute SPF changes for only the affected part of the SPT? 

A. PRC 

B. fast hellos 

C. BFD across the entire backbone area 

D. incremental SPF 

Answer: D 


Q10. Which QoS method is available when GRE is used to provide MPLS VPN services over an IP-only core? 

A. matching MPLS EXP on the physical interface 

B. matching EXP on the tunnel interface 

C. matching DSCP on the physical interface 

D. matching DSCP on the tunnel interface 

Answer: C