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Q31. A Service Provider provides a Layer 2 connection that is based on IEEE 802.1ad. When the customer tries to access a switch at the other side of the link by using SSH, the connection fails. What is the cause of this failure?
A. The Service Provider omitted the command l2protocol-tunnel stp.
B. The Service Provider omitted the command l2protocol-tunnel vtp.
C. The Service Provider omitted the command vlan dot1q tag native.
D. The Service Provider omitted the command spanning-tree bpdufilter enable.
Answer: C
Explanation: https://ccieblog.co.uk/qinq/802-1q-tunnelling-qinq
Q32. Refer to the exhibit. How will the redistributed routes on R1 from EIGRP into OSPF be installed in the R4 routing table?
A. as a default route with an E2 route type
B. as a default route with an IA route type
C. as specific routes with an E2 route type
D. as specific routes with an N2 route type
E. as a default route with an N2 route type
Answer: B
Explanation: http://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/6208-nssa.html http://www.cisco.com/image/gif/paws/6208/nssa.pdf
Q33. Refer to the exhibit.
Why does R1 not receive a label for 10.0.0.3/32 prefix?
A. R1 does not have an established LDP neighborship with the router announcing the 10.0.0.3/32 prefix.
B. The 10.0.0.3/32 prefix is being null-routed in the downstream neighbor
C. LDP peer is not configured to advertise a label for the 10.0.0.3/32 prefix
D. BGP is not configured to exchange labels with the BGP peer advertising 10.0.0 3/32 prefix
Answer: D
Q34. Refer to the exhibit.
Why is RC unable to receive prefix 1.1.1.1/32?
A. On RB. neighbor 10.10.12.1 send-community is not configured.
B. On RA, ip bgp-community new-format is not configured.
C. On RB. neighbor 10.10.23.3 send-community is not configured.
D. On RA, neighbor 10.10.12.2 send-community is not configured.
E. On RC. ip bgp-community new-format is not configured.
F. On RB, ip bgp-community new-format is not configured
G. On RB. neighbor 10.10.23.3 next-hop-self is not configured.
Answer: A
Q35. A company is deciding between an HVR and SVR solution in order to finalize a virtualization project proposal. Which is an advantage of a HVR solution versus a SVR solution?
A. A HVR solution implements dedicated data plane resources.
B. A HVR solution implements shared control plane resources.
C. A HVR solution introduces significant contention of resources.
D. A HVR solution implements dedicated chassis resources.
Answer: A
Explanation:
Comparison of Virtualized Routing Architectures
Category Hardware-Isolated Virtual Router Software-Isolated Virtual Router
Control plane resources (CPU, memory)
Dedicated
Shared
Data plane resources (forwarding engine, queues)
Dedicated
Shared
Chassis resources (power supplies, blowers, fabric)
Shared
Shared
Management, configuration
Dedicated
Typically shared, but varies depending on degree of virtualization
Connections between virtualized routing entities
Typically external
Typically internal, but possibly external
Per-chassis scalability (routing adjacencies, prefixes)
Increased with additional logical routers
Unaffected by additional virtual routers
Reference: http://www.cisco.com/en/US/solutions/collateral/ns341/ns524/ns562/ns573/white_paper_c1 1-512753_ns573_Networking_Solutions_White_Paper.html
Q36. Refer to the exhibit.
Two ISPs have decided to implement MPLS Inter-AS TE. All routers have full reachability to all subnets. RSVP and MPLS TE have been enabled in all routers interfaces in both ISPs, yet Tunnel 14 is not up Which configuration will fix this issue?
A. On R1, apply the command:
interface Tunnel14
mpls traffic-eng passive-interface nbr-te-id 10.10.10.4 nbr-igp-id ospf 10.10.10.1
B. On R1, apply the command:
interface Tunnel14
mpls traffic-eng passive-interface nbr-te-id 10.10.10.4 nbr-igp-id isis 10.0000.0000.0004.00
C. On R1. apply the command:
interface Tunnel 14
tunnel mpls traffic-eng path-option 1 dynamic
D. I On R2. apply the command:
interface Fa0/1
ip router isis
!
router ospf 1
redistribute isis subnets
On R3, apply the command:
interface Fa0/1
ip ospf 1 area 0
!
router isis
redistribute ospf 1
E. On R2, apply the command:
interface Fa0/1
mpls traffic-eng passive-interface nbr-te-id 10.10.10.3 nbr-igp-id ospf 10.10.10.2
!
On R3, apply the command:
interface Fa0/1
mpls traffic-eng passive-interface nbr-te-id 10.10.10.2 nbr-igp-id isis 10.0000.0000.0003.00
F. On R2, apply the command:
interface Fa0/1
mpls traffic-eng passive-interface nbr-te-id 10.10.10.3 nbr-igp-id isis 10.0000.0000.0003.00
!
On R3, apply the command:
interface Fa0/1
mpls traffic-eng passive-interface nbr-te-id 10.10.10.2 nbr-igp-id ospf 10.10.10.2
Answer: F
Q37. BGP best route selection process is based on what?
A. path attributes
B. lowest cost
C. highest bandwidth
D. lowest delay
E. lowest hop-count
Answer: A
Q38. Which is the RP address of the IPv6 multicast address FF76:0:130:1234:5678:9abc::4321?
A. 4321:5678:9abc::30
B. 4321:5678:9abc::13
C. 1234:5678:9abc::130
D. 1234:5678:9abc::1
E. 1234:5678:9abc::13
Answer: D
Explanation: Reference:
http://www.netcraftsmen.com/wp-content/uploads/2014/12/20090429-CMU-Introduction_to_IP_Multicast.pdf page 53
Q39. MPLS Service Providers use Route Distinguishers and Route Targets as methods to control routing for customer VRFs. Which two statements are true about Route Distinguishers and Route Targets? (Choose two.)
A. Route Targets are values that are used by a PE router to uniquely identify a VRF within its local MP-BGP VPNv4 table.
B. Route Distinguishers are used by PE routers by exporting and importing routes into a local VRF.
C. Route Targets are used by PE routers to define how to import and export prefixes into a local VRF database.
D. Route Targets are extended communities that are used by MP-BGP to identify routes as they are advertised to neighbor PE routers.
E. Route Distinguishers are values that are used by a PE router to uniquely identify a VRF within its local MP-BGP VPNv4 table.
Answer: C,E
Q40. An IS-IS enabled router with multiple IS-IS neighbors is required to have BFD sessions with all neighbors. Which BFD mode should you use when you want to save the overhead of periodic protocol control packets?
A. echo
B. asynchronous
C. demand
D. active
Answer: C
Explanation: https://tools.ietf.org/html/rfc5880#section-3.1 RFC - 5880