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2021 Mar 400-201 free practice exam

Q91. In a virtualization concept, which is one of the characteristic of the HVR solution? A. introduces significant contention of resources 

B. implements shared control plane resources 

C. implements dedicated chassis resources 

D. implements dedicated data plane resources 


Q92. Refer to the exhibit. 

R1 is using the RP that is learned via BSR R1 also has a static RP configuration in place. 

In order to prefer the static RP over BSR, which configuration should be applied on R1? 

A. ip pim bsr-candidate loopback 0 priority 200 

B. ip pim rp-address priority 200 

C. ip pim bsr-candidate loopback 0 override 

D. ip pim rp-address override 


Q93. In a secure domain router scenario, which two functions are shared amongst all SDR in the system? (Choose two.) 

A. configuration 

B. protocols 

C. routing tables 

D. chassis-control 

E. switch-fabric 

Answer: D,E 


Secure domain routers (SDRs) provide a means of partitioning a router into multiple, independent routers. SDRs perform routing functions in the same manner as a physical router but share resources with the rest of the system. For example, the applications, configurations, protocols, and routing tables assigned to an SDR belong to that SDR only, but other functions such as chassis control, switch fabric, and partitioning are shared with the rest of the system. 

Reference: er_01110.html 


Drag and drop the IPFIX terminology on the left to the correct description on the right. Not all options will be used. 


Q95. Refer to the exhibit. 

A service provider is running MPLS TE across its network. IS-IS is deployed as the IGP for the ISP network. The MPLS TE tunnel 0 configured on PE2 is seen in an operational down state. PE2 is a level-1 router and the destination is located in the IS-IS level-2 area. Which action is required to bring the MPLS TE tunnel 0 to up state? 

A. Configure the next-address entries as loose paths in the explicit-path. 

B. Change the autoroute option from destination to announce. 

C. Configure a bandwidth value for the tunnel. 

D. Configure an IPv4 address for the Tunnel 0. 

E. Add a dynamic path option to the tunnel. 


Regenerate 400-201 simulations:

Q96. An engineer is deploying RTBH. What is necessary routing constraint required for successful implementation? 

A. The trigger device must have an iBGP session with all the clusters/route reflectors in the autonomous system. 

B. The trigger device must redistribute the static route pointing to a null interface into the IGP process. 

C. The no ip reachables command must be issued on the PE router interface under attack. 

D. The attacker’s destination IP address must be routed to a null interface. 

E. The eBGP sessions need to set the next-hop attribute value to the trigger device loopback interface. 


Explanation: Old Dumps Actual Test pg no.52 (520 Q) 

Q97. Refer to the exhibit. 

In the topology, networks in VRF A use the service provider network for transport. PE1 and PE2 run MP-BGP VPNv4 peering. Links between PE and P routers have MPLS enabled. Links between R1 and P routers do not support MPLS. 

Which technology can be implemented to build MPLS services between P1 and P2? 

A. Layer 3 VPN over GRE Tunnels 

B. L2TPv3 

C. RSVP Signaled Tunneling 

D. MPLS LDP Tunnels 



Q98. 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 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. 


Q99. In an end-to-end Layer 2 service, which technology provides the capability to detect, verify, isolate, and report faults across a provider network? 

A. carrier detect 





Q100. Which is one difference between H-VPLS and VPLS? 

A. VPLS is a point-to-point Layer-2 services and H-VPLS is a multipoint Layer-2 services. 

B. H-VPLS reduces signaling overhead and packet replication requirements for the provider edge. 

C. VPLS improve scalability concerns identified on H-VPLS implementation. 

D. H-VPLS connects using also other Layer-2 encapsulation such as PPP and VPLS connects using Ethernet encapsulation only