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Q1. Refer to the exhibit.
The vrf MAINT has been provisioned and used by the Service Provider management network. The engineer discovers that syslog messages are not being received on the syslog server. IP reachability has been validated using ping. Which issue in the configuration must be corrected?
A. logging on must include the vrf MAINT keyword.
B. logging host must include the vrf MAINT keyword.
C. The logging facility must be configured for syslog processing.
D. The route targets that are configured do not match the route distinguisher.
Answer: B
Explanation:
http://www.cisco.com/c/en/us/td/docs/ios/12_2sr/12_2sra/feature/guide/srvrfslg.html#wp10 59076
Q2. In a secure domain router scenario, which two functions are shared amongst all SDR in the system? (Choose two.)
A. configuration
B. protocols
C. routing tables
D. chassis-control
E. switch-fabric
Answer: D,E
Explanation:
Secure domain routers (SDRs) provide a means of partitioning a router into multiple, independent routers. SDRs perform routing functions in the same manner as a physical router but share resources with the rest of the system. For example, the applications, configurations, protocols, and routing tables assigned to an SDR belong to that SDR only, but other functions such as chassis control, switch fabric, and partitioning are shared with the rest of the system.
Reference: http://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-3/system_management/command/reference/b_sysman_cr43crs/b_sysman_cr43crs_chapt er_01110.html
Q3. An engineer is working to provide high availability to a Service Provider core network. Which BGP command enables a backup path to be installed in the RIB and CEF tables?
A. maximum-paths ibgp
B. bgp additional-paths install
C. maximum-paths eibgp
D. bgp additional-paths select
E. bgp advertise-best-external
Answer: B
Explanation: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-3s/irg-xe-3s-book/bgp_best_external.html#GUID-66F31B75-B1E6-4B38-9B4D-6A89839930CE
Q4. When IPv6 is enabled on an interface, which three multicast addresses does the configured interface automatically join? (Choose three.)
A. FF01::2
B. FEC0::1
C. FF02:0:0:0:0:1:FF00::/104
D. FF02::1
E. FF01::1
F. FF02::2
G. FF02::D
H. FF02::5
Answer: C,D,F
Explanation:
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/4_1/configuration/guides/cli_4_1/clibook/ipv6.pdf https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xml
Q5. Refer to the exhibit.
An engineer observes that the MC-LAG bundle is down on the active aggregation device. Which is the reason for this issue?
A. The number of configured minimum links is the same of the maximum links available in the bundle.
B. The ICCP redundancy group is configured with the same system MAC address
C. The ICCP redundancy group is configured with the system priority.
D. The number of minimum configured links is greater than the number of links operational in the bundle
Answer: D
Explanation:
https://supportforums.cisco.com/document/9868751/asr9000xr-multichassis-lag-or-mc-lag-mclag-guide130
Q6. Refer to the exhibit. A network engineer must configure BFD for IS-IS between R1 and R2. In case the primary link fails, the convergence time should be less than a second.
Which two IOS commands are required to meet this requirement? (Choose two.)
A. isis bfd
B. bfd minimum-interval 250
C. bfd interval 250 min_rx 250 multiplier 3
D. bfd multiplier 3
E. bfd interval 250 min_rx 250 multiplier 4
F. bfd fast-detect ipv4
Answer: C,F
Explanation: http://www.cisco.com/c/en/us/td/docs/routers/xr12000/software/xr12k_r4-3/routing/command/reference/b_routing_cr43xxr12k/b_routing_cr43xxr12k_chapter_010.ht ml#wp3058619742
Q7. Which are the two fundamental ways in which IEEE 1588 differs from SyncE? (Choose two.)
A. In addition to frequency synchronization, it achieves ToD synchronization to achieve phase alignment which is required for multi-channel communication.
B. It is a purely-based solution, with the actual clock values being passed inside the payloads of special packets dedicated to that task.
C. It offers two major changes over traditional Ethernet to make it suitable for clock distribution: a mandated clock accuracy and the ESMC protocol for clock selection, distribution, management, traceability, and failover.
D. SyncE is a Cisco proprietary ToD technology where IEEE 1588 is a industry standard recommended for interoperability across vendor devices.
E. IEEE 1588 applies to voice-only systems or with low-bandwidth data traffic.
Answer: A,B
Explanation: http://www.eetimes.com/document.asp?doc_id=1278660
Q8. 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
Q9. The product team at an ISP that offers VoIP services wants to add two-way video conferencing to their product offering. Which three QoS methods can be applied for real-time traffic on WAN links with speeds that are slower than 768 Kbps? (Choose three.)
A. Apply MLP link fragmentation and interleaving to the interface.
B. Apply LLQ with both voice traffic and video traffic in the same priority queue.
C. Apply CBWFQ with VoIP traffic in its own class, which is marked with a PHB value of EF.
D. Apply CBWFQ with video traffic in its own class, which is marked with a PHB value of AF41.
E. Apply voice-adaptive fragmentation to ensure that large video packets are fragmented and interleaved.
F. Apply LLQ with video traffic that is dedicated in the priority queue.
Answer: A,C,D
Explanation:
http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND/Qo S-SRND-Book/WANQoS.html
Q10. Which three configuration sections are required on service provider PE routers to enable IPv4 Layer 3 VPN? (Choose three.)
A. Configure route distinguishers that are used for importing and exporting customer VRF routes.
B. Configure at least one interface that is assigned to a customer link as a member of the VRF.
C. Configure the VPNv4 address-family under the MP-BGP configuration mode on the PE routers that participate in the customer VRF routing.
D. Configure route targets that are used for importing and exporting customer VRF routes
E. Advertise customer routes to all PE routers by configuring the IPv4 address-family under the MP-BGP configuration mode.
F. Implement MPLS for all customer-facing links.
Answer: B,C,D
Q11. 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
Q12. 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
Q13. A network engineer needs to connect two core switches that use Gigabit Ethernet interfaces in an MPLS backbone and that are separated by a distance of 60 km. Which Cisco GBIC achieves this goal?
A. Cisco 1000BASE-T GBIC
B. Cisco 1000BASE-SX GBIC
C. Cisco 1000BASE-LX/LH GBIC
D. Cisco 1000BASE-ZX GBIC
Answer: D
Explanation:
http://www.cisco.com/web/partners/downloads/765/tools/quickreference/gbic.pdf
Q14. Refer to the exhibit.
A CE connected to a service provider has an agreement to use 512Mbps of bandwidth. Which QoS configuration must be modified to ensure that the traffic matches the agreed bandwidth?
A. Apply the same CE QoS configuration on PE on inbound direction.
B. Change the outbound direction of the service-policy to inbound for ingress traffic shaping.
C. Treat the class-default as best-effort by removing the shape average 512000 command
D. Replace the shape keyword with police keyword in both classes
E. Reconfigure the policy-map as a nested policy with the shaping applied as a parent for all child policies
Answer: E
Q15. A Service Provider is offering VoIP services and a service level agreement to customers. Which configuration provides validation to customers that the service level agreement has been honored?
A. ip sla 999 udp-jitter 209.165.200.225 1000 codec g729a tos 160 ip sla schedule 999 life forever start-time now
B. ip sla 999 icmp-jitter 209.165.200.225 tos 160 ip sla schedule 999 life forever start-time now
C. ip sla 999 icmp-jitter 209.165.200.225 tag VoIP-SLA ip sla schedule 999 life forever start-time now
D. ip sla 999 udp-jitter 209.165.200.225 1000 codec g729a tag VoIP-SLA
ip sla schedule 999 life forever start-time now
Answer: D