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Q1. What is NETCONF? 

A. It is a standard for installing, manipulating and deleting configuration of network devices. 

B. it is a Cisco proprietary solution to help remove the time, cost and manual steps involved in network element configuration. 

C. It is data modeling language, to help remove the time, cost and manual steps involved in network element configuration. 

D. It is a new recommendation which writes device specific CLI scripts while keeping flexibility in a vendor dependence environment. 

Answer:

Explanation: http://www.tail-f.com/education/what-is-netconf/ 

Q2. 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:

Q3. Refer to the exhibit. 

Which piece of information can be derived from this Cisco IOS XR route policy? 

A. If the destination is 227.0 0 3 or 227 0 0 13 the default table will be used for reverse path forwarding 

B. If the destination ranges between 227.0 0.3 and 227 0.0.13. the IPv4 unicast table will be used for reverse path forwarding 

C. If the destination is 227.0.0.3 or 227.0 0.13, the IPv4 unicast table will be used for reverse path forwarding 

D. If the destination ranges between 227.0.0.3 and 227.0.0.13. the multicast default table will be used for reverse path forwarding 

Answer:

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. 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 

Answer:

Q6. 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:

Q7. Which BGP feature improves the convergence and response time to adjacency changes with BGP neighbors? 

A. reducing BGP scanner timing to the minimum that is supported 

B. BGP Multihop 

C. Next-Hop Address Tracking 

D. Fast Peering Session Deactivation 

E. TTL Security Check 

Answer:

Explanation: http://www.cisco.com/c/en/us/td/docs/ios/12_2sb/feature/guide/sbbnhop.html 

Q8. Refer to the exhibit. 

What is the status of the L2 tunnel between PE1. PE2. and the Layer 2 switches? 

A. The Layer 2 tunnel is up, and SW1 becomes the root bridge for VLAN 10. 

B. The Layer 2 tunnel is down, due to the ACL that is applied on the PE2 interface. 

C. The Layer 2 tunnel is up, but no BPDUs are exchanged unless an extra configuration is applied. 

D. The Layer 2 tunnel is down, due to the MTU mismatch between SW1 and SW2. 

Answer:

Q9. An support engineer has been tasked to protect an ISP infrastructure from the growing number of encrypted DDoS attacks. The solution should also validate the eBGP peering. Which solution accomplishes these goals? 

A. BGP FlowSpec 

B. BTSH 

C. BGP Route Dampening 

D. BGP LS 

E. RTBH 

Answer:

Q10. An engineer must implement E-Line services for a service provider network. Which two services apply in this situation? (Choose two.) 

A. EVPL 

B. E-Tree 

C. E-LAN 

D. EVC 

E. EPL 

Answer: A,E 

Explanation: http://www.cisco.com/c/en/us/td/docs/net_mgmt/prime/fulfillment/6-2/theory/operations/guide/theory/l2ce.pdf