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2021 Mar 400-201 exam question
Q101. Refer to the exhibit. An MPLS Layer 3 VPN service has been provisioned for a customer. What will be the ToS value at Site-B for the exceeded traffic that it is sent from Site-A with ToS 2?
A. 0
B. 2
C. 3
D. 4
E. No exceeded traffic will reach Site-B.
Answer: E
Q102. 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
Q103. When IPv6 is enabled on an interface, which three multicast addresses does the configured interface automatically join? (Choose three.)
A. FF01::2
B. FEC0::1
C. FF02:0:0:0:0:1:FF00::/104
D. FF02::1
E. FF01::1
F. FF02::2
G. FF02::D
H. FF02::5
Answer: C,D,F
Explanation:
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/4_1/configuration/guides/cli_4_1/clibook/ipv6.pdf https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xml
Q104. Refer to the exhibit. The Service Provider does not have IPv6 support in the core, however it does have MPLS support. Customer requires IPv6 connectivity in all sites including Internet access. Without a requirement to create VRF, which method is preferred to support IPv6 traffic between these sites?
A. 6VPE
B. H-VPLS
C. L2TPv3
D. VPLS
E. 6CE
F. 6PE
Answer: F
Explanation:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_data_sheet09186a008 052edd3.html
Q105. An engineer wants to configure MPLS TE Fast Reroute with link protection on five routers. Which methodology can reduce configuration on the point of the local repair router and successfully complete the task?
A. Configure a backup tunnel on the PLR.
B. Enable the autotunnel backup feature.
C. Configure a backup tunnel on the tunnel head end router.
D. Enable the autotunnel primary feature.
Answer: B
Explanation: http://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-2/mpls/configuration/guide/b_mpls_cg42crs/b_mpls_cg42crs_chapter_0100.html#concept_ F19BEEEFC831436AAC9291A87F9B34E5
Updated 400-201 practice test:
Q106. DRAG DROP
Drag and drop Evolved Packet Core functional entities on the left to the correct description on the right.
Answer:
Q107. Refer to the exhibit. What is the correct action to fix the L2TPv3 configuration?
A. At Router-A, correct the local interface in the pseudowire configuration.
B. At Router-B, correct the encapsulation in the pseudowire configuration.
C. At Router-A, correct the encapsulation in the pseudowire configuration.
D. At Router-B, correct the local interface in the pseudowire configuration.
Answer: B
Explanation:
http://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/l2tpv30s.html#wp1046765
Q108. Refer to the exhibit.
The NOC engineer noticed that the R2 router system clock is not updated and synchronized to the NTP server that is configured on the R10 router. What is the issue?
A. The access list NTP_Clients is missing.
B. The access group is misconfigured.
C. The maximum number of peers and client associations is exceeded.
D. The authentication key is mismatched.
E. The PE2 router should be configured as an NTP peer instead of as a client.
Answer: C
Q109. On a Cisco ASR 1000 Series, which hardware component is used to build and distribute the forwarding plane information to all line cards?
A. RP
B. ESP
C. SIP
D. PRP
Answer: B
Q110. 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 192.168.1.1 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.
Answer: A