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2021 Mar 400-201 answers
Q61. 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
Q62. In which way does the DS-Lite IPv6 transitioning mechanism differ from IPv6 Dual-Stack?
A. DS-Lite is a combination of tunnel and translation technologies.
B. DS-Lite is a transition technology that gives full IPv6 connectivity for IPv6 capable hosts that are on the IPv4 Internet but have no native connection to an IPv6 network.
C. DS-Lite is an automatic tunnel where the tunnel destination is determined by the IPv4 address extracted from the IPv6 address that starts with the prefix 2002::/16.
D. DS-Lite is a stateless tunneling mechanism with a lightweight and secure manner without requiring upgrades to existing IPv4 access network infrastructure.
Answer: A
Explanation: http://www.cisco.com/c/en/us/products/collateral/service-provider/carrier-grade-ipv6-solution/white_paper_c11-558744-00.html
Q63. DRAG DROP
Drag and drop each fast detection mechanism on the left to its definition on the right.
Answer:
Q64. 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
Q65. A network engineer is designing the BGP architecture with a requirement of preventing the AS 65001 from becoming a Transit AS path, using the following configuration:
router bgp 65000
neighbor 10.0.0.1 route-map BGP-ROUTE-POLICY in
The goal is to prevent routes learned from 10.0.0.1 from being advertised to any other eBGP peering in the AS 65000. What command should be used within the route map to achieve this goal while keeping existing route policies in place?
A. set community no-export additive
B. set community no-advertise
C. set community no-advertise additive
D. set community no-export
Answer: C
Explanation:
Reference: http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/26634-bgp-toc.html
Latest 400-201 dumps:
Q66. An engineer is tasked with configuring Lawful-Intercept on the Internet facing routers. Which two security issues must the engineer take into consideration? (Choose two)
A. Default SNMP does not include all the MIB references needed to respond to the request.
B. A new and dedicated loopback interface is required to communicate with the MD device.
C. Encryption might be required depending on the request.
D. The communication between the MD and the Content IAP happens over UDP port 161.
E. QoS and CoPP should be implemented to protect and optimize the tasks.
F. SNMFV2c should be enabled in order to provide the correct message format.
Answer: A,D
Q67. A network administrator wants to implement an IP dampening feature for a network. Which parameter identifies how fast the accumulated penalty can decay exponentially?
A. reuse threshold
B. suppress threshold
C. half-life period
D. maximum suppress time
Answer: C
Explanation: Reference:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_pi/configuration/15-sy/iri-15-sy-book/iri-ip-event-damp.html
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. Which two statements about 10 Gigabit Ethernet WAN PHY mode are true? (Choose two.)
A. The signal maps to an OC-192c/STM-64c payload.
B. The nominal speed is 9.95328 Gbps.
C. It is compatible with Packet Ethernet over SONET.
D. The signal maps to an OC-768c/STM-256c payload.
E. It is compatible with Packet over SONET.
F. The nominal speed is 10.3125 Gbps.
Answer: A,B
Explanation: https://en.wikipedia.org/wiki/10_Gigabit_Ethernet
Q70. 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