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2021 Sep thendral 201-400:

Q101. In a routing virtualization concept, which are the two main techniques for creating virtualized router entities as defined by their physical and operational characteristics? (Choose two.) 






Answer: B,D 


http://www.cisco.com/en/US/solutions/collateral/ns341/ns524/ns562/ns573/white_paper_c1 1-512753_ns573_Networking_Solutions_White_Paper.html 

Q102. Refer to the exhibit. 

When a traceroute is performed from a PC behind R2, the next hop on R1 for IPv4 is, 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. 

Answer: C 

Q103. Based on the following configuration: 

Which two statements about multicast VPN configuration are true? (Choose two.) 

A. The multicast tree is created based only on the existence of active sources or receivers behind PEs in the ABC VRF. 

B. The service provider core network is required to support SSM. 

C. Multicast needs to be enabled only on ABC VRF and is tunneled to participating PE routers in the ABC VRF. 

D. The SP core network is required in order to enable the BGP Multicast Address Family on all peering. 

E. Multicast is required for the core network in addition to the ABC VRF. 

F. The multicast tree exists regardless of whether there are any active sources or receivers in the ABC VRF. 

Answer: E,F 

Explanation: http://www.ciscopress.com/articles/article.asp?p=32100&seqNum=4 

http://www.cisco.com/en/US/tech/tk828/technologies_white_paper09186a00800a3db6.sht ml 

Q104. Refer to the exhibit. 

A company has a requirement to provide communication among remote sites via multipoint GRE tunnels. This communication is not working yet. Which is the root cause of this issue? 

A. The key that is used on the DMVPN tunnel between the spoke and hub ends does not match. This causes the tunnel to fail. 

B. BGP IPv4 multicast address-family is missing between hub and spoke points. 

C. The GRE tunnel is not sourced from a physical interface. The DMVPN traffic does not know where to forward packets. 

D. The NHRP network ID does not match in the hub and spoke configuration causing NHRP negotiations to fail and the mGRE to stay down. 

Answer: D 


Drag and drop the MPLS operation listed on the left to the correct order of the operation on the right. 


400-201  exam answers

Refresh thendral 201-400:

Q106. A network engineer wants to decrease the convergence time of a network that is running integrated IS-IS as an IGP, at the expense of bandwidth and CPU usage. Which two configuration tasks achieve this goal? (Choose two.) 

A. Configure the hold time to be 1 second. 

B. Configure the hello interval to be minimal. 

C. Ensure that hello-padding is disabled. 

D. Ensure that the hello multiplier is set to 3. 

E. Configure the hello multiplier to be 3. 

Answer: B,D 


https://books.google.co.in/books?id=u_XOQy4cBkgC&pg=PA184&lpg=PA184&dq=what+is +hello+multiplier+minimal+time+in+integrated+is-is&source=bl&ots=XqDfyO3AVT&sig=NHY0L-k-nhHrg7h6i3RWorttgcE&hl=en&sa=X&ved=0CDAQ6AEwA2oVChMIhfCI5ZXTxwIVQwaOC h3PfQea#v=onepage&q=what%20is%20hello%20multiplier%20minimal%20time%20in%20 integrated%20is-is&f=false 

Q107. Cisco IOS XR has implemented a nonstop routing feature so that when RP failover occurs, the routing information can be recovered locally. Which protocol does not support the NSR feature? 






Answer: E 

Q108. Which two statements about forwarding equivalence class (FEC) are true? (Choose two) 

A. FEC might correspond to a destination IP subnet, but it might also correspond to any traffic class that the edge LSR considers significant. 

B. FEC is a group of IP packets that is forwarded over a different path, but with the same forwarding treatment. 

C. FEC is a group of IP packets that is forwarded over the same path, and with the same forwarding treatment. 

D. FEC is a group of IP packets that is forwarded over a different path, but with the different forwarding treatment. 

E. FEC is a group of IP packets that is forwarded over the same path, but with a different forwarding treatment. 

Answer: A,C 

Q109. Which multicast feature listens multicast conversations maintaining a map in order to control which ports receive specific multicast traffic? 

A. Bidirectional PIM 

B. Source Specific Multicast 

C. PIM assertion 

D. IGMP snooping 

Answer: D 

Q110. Refer to the exhibit. 

ABC and XYZ MPLS VPN customers are accruing Internet access. Both CEs are sending traffic to the Internet. Which statement about their connectivity is true? 

A. Both CEs will have connectivity. 

B. Only CE-XYZ will have connectivity. 

C. Neither CEs will have connectivity, as both CEs are using the same NATed subnet. 

D. Only CE-ABC will have connectivity. 

E. Neither CEs will have connectivity, as IAR does not have route back to the NATed subnet. 

Answer: D