Q1. Which two statements about forwarding equivalence class (FEC) are true? (Choose two)
A. FEC might correspond to a destination IP subnet, but it might also correspond to any traffic class that the edge LSR considers significant.
B. FEC is a group of IP packets that is forwarded over a different path, but with the same forwarding treatment.
C. FEC is a group of IP packets that is forwarded over the same path, and with the same forwarding treatment.
D. FEC is a group of IP packets that is forwarded over a different path, but with the different forwarding treatment.
E. FEC is a group of IP packets that is forwarded over the same path, but with a different forwarding treatment.
Answer: A,C
Q2. Refer to the exhibit. Router RT1 has three equal-cost paths back to the source. Which configuration should be applied in order to load-balance the multicast traffic across all three links.
A. Create three static multicast routes where each pointing out to one or three interfaces.
B. Enable PIM multipath.
C. Create a tunnel interface between RT1 and RT2. Enable PIM on the interface tunnel and disable PIM on the three interfaces part of equal-cost path between RT1 and RT2.
D. PIM load balance is not possible. PIM only chooses one interface for RFC check and prunes the other interfaces.
Answer: C
Explanation:
Reference: http://www.cisco.com/c/en/us/support/docs/ip/ip-multicast/16450-mcastguide0.html
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. Network Operations team has configured the routers with the logging buffered warnings command. Which three severity levels appear in the router syslog? (Choose three.)
A. errors
B. notifications
C. informational
D. alerts
E. debugging
F. emergencies
Answer: A,D,F
Q5. Which are the four key design requirements for mobile IP backhaul? (Choose four)
A. network timing distribution and recovery
B. MPLS-enabled interface
C. Layer 2 Tunneling
D. X2 interface turning point
E. DiffServ QoS
F. bandwidth
G. native IPv6 support
H. mandatory Layer 3 access up to a cell site
Answer: A,B,E,H
Q6. Refer to the exhibit:
Which Cisco IOS XE configuration method allocates a label for prefixes with a /32 subnet mask only?
A. Option 1
B. Option 2
C. Option 3
D. Option 4
Answer: A
Q7. Refer to the exhibit.
A service provider is running MPLS TE across its network. IS-IS is deployed as the IGP for the ISP network. The MPLS TE tunnel 0 configured on PE2 is seen in an operational down state. PE2 is a level-1 router and the destination 192.168.1.1 is located in the IS-IS level-2 area. Which action is required to bring the MPLS TE tunnel 0 to up state?
A. Configure the next-address entries as loose paths in the explicit-path.
B. Change the autoroute option from destination to announce.
C. Configure a bandwidth value for the tunnel.
D. Configure an IPv4 address for the Tunnel 0.
E. Add a dynamic path option to the tunnel.
Answer: A
Q8. Refer to exhibit. NAT64 stateless configuration has been applied on RT1 router. The NAT64 prefix stateless used on this scenario is 2001:DB8:2::/96. ‘Host IPv4 only’ needs to test the connectivity with ‘Host IPv6 only’ using a ping command. Which is the correct ping command ‘Host IPv4 only’ should use?
A. ping 27.1.1.10
B. ping 27.1.1.10 source 2001:db8:2::7001:10A
C. ping 2001:db8:2::7001:10A
D. ping 2001:db8:2::112.1.1.10
E. ping 2001:db8:2::27.1.1.10
F. ping 2001:db8:2::1B01:10A
Answer: A
Q9. DRAG DROP
Drag and drop each fast detection mechanism on the left to its definition on the right.
Answer:
Q10. Refer to the exhibit. Why is R3 unable to install 1.1.1.1/32 in its routing table?
A. 11.11.11.11/32 exists in the routing table, so the conditional advertising is not working.
B. The route is filtered out by the ip prefix-list ROUTE-IN command.
C. 11.11.11.11/32 is advertising in the BGP table, so conditional advertising is not working.
D. The bgp redistribute-internal command is missing under the R2 BGP process.
Answer: B