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2021 Apr 400-201 test questions
Q61. Refer to the exhibit.
A CE connected to a service provider has an agreement to use 512Mbps of bandwidth. Which QoS configuration must be modified to ensure that the traffic matches the agreed bandwidth?
A. Apply the same CE QoS configuration on PE on inbound direction.
B. Change the outbound direction of the service-policy to inbound for ingress traffic shaping.
C. Treat the class-default as best-effort by removing the shape average 512000 command
D. Replace the shape keyword with police keyword in both classes
E. Reconfigure the policy-map as a nested policy with the shaping applied as a parent for all child policies
Answer: E
Q62. Which technology is a forwarding decision point in a PE router that provides flexibility to make many Layer 2 flow decisions within an interface?
A. local connect
B. AToM
C. VPLS
D. pseudowire
E. EFP
Answer: E
Q63. Which three configuration sections are required on service provider PE routers to enable IPv4 Layer 3 VPN? (Choose three.)
A. Configure route distinguishers that are used for importing and exporting customer VRF routes.
B. Configure at least one interface that is assigned to a customer link as a member of the VRF.
C. Configure the VPNv4 address-family under the MP-BGP configuration mode on the PE routers that participate in the customer VRF routing.
D. Configure route targets that are used for importing and exporting customer VRF routes
E. Advertise customer routes to all PE routers by configuring the IPv4 address-family under the MP-BGP configuration mode.
F. Implement MPLS for all customer-facing links.
Answer: B,C,D
Q64. An engineer is working to provide high availability to a Service Provider core network. Which BGP command enables a backup path to be installed in the RIB and CEF tables?
A. maximum-paths ibgp
B. bgp additional-paths install
C. maximum-paths eibgp
D. bgp additional-paths select
E. bgp advertise-best-external
Answer: B
Explanation: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-3s/irg-xe-3s-book/bgp_best_external.html#GUID-66F31B75-B1E6-4B38-9B4D-6A89839930CE
Q65. 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
Up to the immediate present 400-201 exam question:
Q66. In which three ways do PE routers manage multiple customers in MPLS VRF environments? (Choose three.)
A. Route targets are configured that allow the PE to uniquely identify the customer routes in MP-BGP
B. PE routers use route distinguishers to tag routes for importing and exporting into customer VRFs.
C. PE routers use PE-CE routing protocols to manage routing with client VRF devices.
D. PE routers use route targets to tag routes for importing and exporting into customer VRFs.
E. Route distinguishes are configured that allow the PE to uniquely identify the customer routes in MP-BGP.
F. PE routers use PE-PE routing protocols to manage routing with client VRF devices.
Answer: C,D,E
Q67. Refer to the exhibit.
ABC and XY2 MPLS VPN customers require Internet access. An ISP engineer deployed the solution on PE1 device. Which statement about CEs connectivity to Internet is true?
A. Only CE-XYZ will have connectivity
B. Neither CE will have connectivity, as IAR does not have route back to the subnet used on NAT configuration.
C. Both CEs will have connectivity.
D. Only CE-ABC will have connectivity.
E. Neither CE will have connectivity, as both CEs are using the same subnet used on NAT configuration.
Answer: D
Q68. Two MPLS VPN customers want to acquire Internet access. They make use of overlapping address space but do not want to use NAT on the CPEs. Which action satisfies this requirement?
A. Configure each VRF with a default route in the global table by using a static route toward each customer's range, pointing to the customer interface in the global table.
B. Configure VRF-aware NAT with a default route in the global table for each VRF that requires it
C. Configure a separate PE-CE subinterface that terminates in the global routing table on the PE.
D. Configure the Internet upstream interface inside a VRF, Which becomes an extranet VRF to which customers join and make use of NAT in this VRF.
Answer: D
Q69. 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: B
Q70. Two switches are connected back-to-back using two Gigabit Ethernet interfaces. These two interfaces are assigned to a port channel in VLAN trunk mode. Which configuration sequence allows the addition of a new VLAN in this link?
A. Add the VLAN to the port channel only, and remove it from the individual links.
B. Add the VLAN to both the port channel and individual links.
C. Add the VLW to the port channel only, and it will be reflected on the individual links.
D. Add the VLAN to the individual links, and it will be reflected on the port channel.
Answer: C
