Q1. A service provider is implementing Ethernet solutions for clients that are not being provisioned within the MPLS core network. Which solution allows the Service Provider to complete Ethernet circuit provisioning in this scenario? 

A. L2TPv3 

B. VPLS 

C. AToM 

D. PPPoE 

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Q2. Refer to the exhibit. 

When a traceroute is performed from a PC behind R2, the next hop on R1 for IPv4 is 10.0.1.2, and for IPv6 it is 2001:DB8:2:2. What is causing thus behavior? 

A. GigabitEthernet2/1 has a Level 1-only adjacency. This causes it to be the preferred path for the IPv6 packets. 

B. When SPF ran on R2, it calculated two equal paths to R1. It was a coincidence that than the packets choose different paths. 

C. Multitopology is enabled on R2, which causes the IPv6 packets to use a different path than the IPv4 packets. 

D. 2001:DB8:2::2 is on a Gigabit Ethernet interface. Because its speed is higher than Fast Ethernet, the IS-IS metric is preferred. 

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Q3. 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. 

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Q4. Refer to the exhibit: 

A customer with two sites is running RIP as a CE-PE routing protocol. These two sites are connected through Layer 3 VPN services. Each of these CE routers cannot ping the LAN IP address of the other router. Which action resolves this issue? 

A. On PE2 under RIP VRF ABC address family, add the redistribute bgp 100 metric 5 command. 

B. On PE1 under RIP VRF ABC address family, add the network 10.10.13.0 command. 

C. On both PEs under BGP VRF ABC address family, add the bgp bestpath igp-metric ignore command. 

D. On PE1 under RIP VRF ABC address family, add the no auto-summary command. 

E. On PE2 under BGP VRF ABC address family, add the bgp redistribute-internal command. 

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Q5. 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. 

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Q6. An engineer is troubleshooting L3VPN traffic loss over the MPLS-enabled core network when new core links were enabled. Assuming that the IGP is properly configured, which issue causes a temporary data flow blackholing when the IGP and LDP reconvenes? 

A. LDP is a Layer 2 protocol forwarding label packets before the IGP reconvened. 

B. IP packets are forwarded as soon as routes are learned over a new IGP adjacency before the label exchange happens over the new links 

C. MP-BGP sessions between PE and RR routers require extra time to reconverge than the underlying IGP. 

D. MPLS-TE tunnels without LDP adjacencies are used over the new links black-holing the traffic before the LDP label exchange is completed 

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Q7. Two Tier 2 Service Providers are using a Tier 1 Service Provider for transport. MPLS is required between the Tier 2 Service Providers for label switching. In this CSC solution, which label stack is correct? 

A. original IP packet, MPLS CSC transport label, MPLS VPN label, and MPLS Tier 2 transport label 

B. original IP packet, MPLS Tier 2 transport label, MPLS VPN label, and MPLS CSC transport label 

C. original IP packet, MPLS VPN label, MPLS Tier 2 transport label, and MPLS CSC transport label 

D. original IP packet, MPLS Tier 2 transport label, MPLS CSC transport label, and MPLS VPN label 

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Q8. Refer to the exhibit. 

All routers have OSPF adjacency with the directly connected routers, yet RC cannot receive OSPF updates from Area 0 To fix this issue, which configuration should be applied? 

A. On RD router 

router ospf 1 

area 1 virtual-link 3.3.3.3 

On RB router: 

router ospf 1 

area 1 virtual-link 4.4.4.4 

B. On RC router. 

router ospf 1 

area 2 virtual-link 3.3.3.3 

On RB router: 

router ospf 1 

area 2 virtual-link 2.2.2.2 

C. On RC router 

router ospf 1 

area 0 virtual-link 1.1.1.1 

On RA router: 

router ospf 1 

area 2 virtual-link 2.2.2.2 

D. On RD router: 

router ospf 1. 

area 1 virtual-link 1.1.1.1 

On RA router: 

router ospf 1 areal virtual-link 4.4.4.4 

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Q9. 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 

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Q10. What BGP feature improves on DDOS mitigation by allowing instructions that are more granular and allow for source address, destination, address, L4 details, and packet specifics to be analyzed? 

A. RCMD 

B. RTBH 

C. BGP Flowspec 

D. BGPSec 

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