400-201 Exam Questions - Online Test

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Q1. In a PE-CE scenario using OSPF as the routing protocol, a down-bit set can be advertised in which OSPF LSA type? 

A. type 1 LSA 

B. type 2 LSA 

C. type 3 LSA 

D. type 5 LSA 

E. type 7 LSA 

Answer: C 

Q2. 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 

Q3. Refer to the exhibit. An MPLS Layer 3 VPN service has been provisioned for a customer. What will be the ToS value at Site-B for the exceeded traffic that it is sent from Site-A with ToS 2? 

A. 0 

B. 2 

C. 3 

D. 4 

E. No exceeded traffic will reach Site-B. 

Answer: E 

Q4. A service provider is designing control policies at the customer edge of the network, in order to prevent usage that exceeds the contracted terms A new client that is contracted for only 2 Gbps is connecting to the service provider edge with a 10 Gbps interface. Which two OoS strategies meet the design goal? (Choose two.) 

A. On the customer edge device, enable policing on the interface that is connected to the service provider. 

B. On the service provider edge, enable WRED on the customer port. 

C. On the customer edge, enable WRED on the interface that is connected to the service provider 

D. I On the service provider edge, enable policing on the customer port 

E. the customer edge device, enable traffic shaping on the interface that is connected to the service provider. 

F. C On the service provider edge, enable traffic shaping on the customer port 

Answer: D,E 

Q5. DRAG DROP 

Drag and drop the IOS XR NTP access group options on the left to the right from the least restrictive (top) to the most restrictive order (bottom). 

Answer: 

Q6. 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 

Q7. 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 

Q8. What is the PPMP label used for? 

A. for the ingress replication model with BIDIR-PIM in an overlay model 

B. only for the inter-AS mVPN models that use mLDP 

C. for the partitioned mVPN model with PIM signaling in an overlay model 

D. only for unicast over MPLS VPN 

E. for all the default MDT and mVPN models 

Answer: D 

Explanation: http://lostintransit.se/tag/bgp/ 

https://tools.ietf.org/html/draft-rosen-l3vpn-mvpn-mspmsi-08#section-3.2.2.1 

Q9. Which BGP feature improves the convergence and response time to adjacency changes with BGP neighbors? 

A. Fast Peering Session Deactivation 

B. BGP Multihop 

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

D. TTL Security Check 

E. Next-Hop Address Tracking 

Answer: E 

Q10. Refer to the exhibit. 

ISP-X customers must be able to reach both ISP-Y and ISP-Z, but ISP-X must not allow transit traffic between ISP-Y and ISP-Z at any time Which two options satisfy this requirement? (Choose two.) 

A. Use the MED to prefer the proper routes 

B. Use communities to identify and filter routes. 

C. Use local preference to prefer the routes 

D. Use a route map to filter routes on the AS number. 

E. Use the atomic aggregate attribute 

Answer: B,D