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Q41. A network designer has provisioned a router to use IPsec to encrypt the traffic over a GRE tunnel going to a web server at a remote location. From the router, the network designer can ping the web server, although the users in the office comment that they are unable to reach it. (Note: The DF bit is not set.) Which aspect should be changed in the design of the virtual connection?
A. IP addresses of the GRE tunnel endpoints
B. IPsec configuration
C. MTU size on the GRE tunnel
D. encapsulation of the GRE tunnel
Answer: C
Q42. ACME Corporation is deploying a new HR application that requires the network infrastructure to monitor and react to certain conditions in the network. Which feature should be used to meet this design requirement?
A. Cisco IOS Embedded Event Manager
B. IP SLA
C. reflexive ACLs
D. route maps
E. SOAP
F. exit status
Answer: A
Q43. The network administrator of a branch office network has decided to deploy Unicast RPF at the access layer. He insists that the design must guarantee that all the packets arriving on the router interfaces are assigned to the same interface subnet.
Which mode of Unicast RPF would you recommend as the lead network designer?
A. uRPF strict mode
B. uRPF loose mode
C. uRPF VRF mode
D. RPF feasible mode
Answer: A
Q44. A data center provider has designed a network using these requirements:
Two data center sites are connected to the public Internet.
Both data centers are connected to different Internet providers.
Both data centers are also directly connected with a private connection for the internal traffic, and public Internet traffic can also be routed at this direct connection.
The data center provider has only one /19 public IP address block.
Under normal conditions, Internet traffic should be routed directly to the data center where the services are located. When one Internet connection fails, the complete traffic for both data centers should be routed by using the remaining Internet connection. In which two ways can this routing be achieved? (Choose two.)
A. The data center provider must have an additional public IP address block for this routing.
B. One /20 block is used for the first data center and the second /20 block is used for the second data center. The /20 block from the local data center is sent out with a low BGP weight and the /20 block from the remote data center is sent out with a higher BGP weight at both sites.
C. One /20 block is used for the first data center and the second /20 block is used for the second data center. The /20 block from the local data center is sent out without path prepending and the /20 block from the remote data center is sent out with path prepending at both sites.
D. One /20 block is used for the first data center and the second /20 block is used for the second data center. Each /20 block is only sent out locally. The /19 block is sent out at both Internet connections for the backup case to reroute the traffic through the remaining Internet connection.
E. One /20 block is used for the first data center and the second /20 block is used for the second data center. The /20 block from the local data center is sent out with a low BGP local preference and the /20 block from the remote data center is sent out with a higher BGP local preference at both sites.
F. BGP will always load-balance the traffic to both data center sites.
Answer: CD
Q45. A company is planning to connect its 30 sites with a VPLS WAN backbone. A router at each site should establish neighborships with all other routers using the OSPF routing protocol. Which three points must be considered regarding DR and BDR when different router platforms are used? (Choose three.)
A. It is a best practice that the routers with the most powerful hardware should take the role of the DR and BDR.
B. If the IP OSPF priority is the same for all routers, the highest loopback IP address and router ID will decide which routers will take the DR and BDR role during the selection process.
C. To select the DR and BDR, the IP OSPF priority must be set to a higher value than the default value at the DR and BDR during the selection process.
D. To select the DR and BDR, the IP OSPF priority must be set to a lower value than the default value at the DR and BDR during the selection process.
E. The role for the DR and BDR will be selected when a new OSPF router comes up.
F. To force two routers to become a DR and a BDR, the IP OSPF priority can be set to zero at all other OSPF routers.
Answer: ABF
Q46. Which two headend router scalability factors should be considered when designing a DMVPN network solution that uses a hub-and-spoke topology? (Choose two.)
A. the required aggregated packet per second
B. the amount of bandwidth necessary to terminate all the remote tunnels
C. the routing protocol chosen for the data plane routing
D. the maximum number of tunnels supported by the headend router
E. the CPU and memory of the headend router
Answer: AD
Q47. Refer to the exhibit.
How would you adjust the design to improve convergence on the network?
A. Add an intra-POP link between routers 1A and 1B, and enable IP LFA FRR.
B. Use an IP SLA between the end stations to detect path failures.
C. Enable SSO-NSF on routers 1A and 1B.
D. Use BGP to connect the sites over the WAN.
Answer: A
Q48. Your company needs to baseline web traffic on a per-session basis for network application reporting. Which two mechanisms, when combined, fulfill the requirement? (Choose two.)
A. Flexible Netflow
B. Remote Monitoring
C. Cisco IOS IP Service Level Agreement
D. Class-Based Quality of Service Management Information Base
E. Network-Based Application Recognition
Answer: AE
Q49. Refer to the exhibit.
This diagram depicts the design of a small network that will run EIGRP on R1 and R2, and EIGRP Stub on R3. In which two ways will this network be impacted if there is link instability between R1 and R2? (Choose two.)
A. R1 will have routes in its routing table that originate from R2 and R3.
B. R3 will have routes in its routing table that originate from R1 and R2.
C. R2 will have routes in its routing table that originate from R1 and R3.
D. R3 will be transit for traffic between R1 and R2.
E. R3 will not be transit for traffic between R1 and R2.
Answer: BE
Q50. You are designing a core MPLS-based network with a single OSPF area with no external routes. Which two mechanisms can be used to improve convergence time during a failure? (Choose two.)
A. incremental SPF
B. route filtering
C. graceful restart
D. BFD
Answer: AD
