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QUESTION: 9 Exam Topics:

Which statement about the Cisco MPLS TE forwarding adjacency feature is true?

It enables the MPLS core to use EIGRP as the routing protocol.
It enables the Cisco MPLS TE tunnel to be advertised into the running IGP.
It enables the tailend router to advertise routes to the headend router over the tunnel.
It enables the headend and tailend routers to establish a bidirectional tunnel.

Answer(s): B

Reference:

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_te_path_setup/configuration/xe-16/mp-te- path-setup-xe-16-book/mpls-traffic-engineering-forwarding-adjacency.pdf

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QUESTION: 10 Exam Topics:

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While implementing TTL security, you issue the PE(config-router-af)#neighbor 2.2.2.2 ttl-security hops 2 command.

After you issue this command, which BGP packets does the PE accept?

to 2.2.2.2, with a TTL of 2 or more
from 2.2.2.2, with a TTL of less than 2
to 2.2.2.2, with a TTL of less than 253
from 2.2.2.2, with a TTL of 253 or more

Answer(s): D

Reference:

https://www.cisco.com/c/en/us/td/docs/ios/12_2sx/feature/guide/fsxebtsh.html#wp1059215

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QUESTION: 11 Exam Topics:

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Refer to the exhibits. Which information is provided for traceback analysis when this configuration is applied?

source interface
packet size distribution
IP sub flow cache
BGP version

Answer(s): A

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QUESTION: 12 Exam Topics:

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Refer to the exhibit. R1 is connected to two service providers and is under a DDoS attack.

Which statement about this design is true if URPF in strict mode is configured on both interfaces?

R1 drops all traffic that ingresses either interface that has a FIB entry that exits a different interface.
R1 drops destination addresses that are routed to a null interface on the router.
R1 permits asymmetric routing as long as the AS-PATH attribute entry matches the connected AS.
R1 accepts source addresses on interface gigabitethernet0/1 that are private addresses.

Answer(s): A

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QUESTION: 13 Exam Topics:

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Refer to the exhibit. Router 1 was experiencing a DDoS attack that was traced to interface gigabitethernet0/1.

Which statement about this configuration is true?

Router 1 accepts all traffic that ingresses and egresses interface gigabitethernet0/1.
Router 1 drops all traffic that ingresses interface gigabitethernet0/1 that has a FIB entry that exits a different interface.
Router 1 accepts source addresses that have a match in the FIB that indicates it is reachable through a real interface.
Router 1 accepts source addresses on interface gigabitethernet0/1 that are private addresses.

Answer(s): C

Reference:

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/4_1/nx-os/security/configuration/ guide/sec_nx-os-cfg/sec_urpf.html

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QUESTION: 14 Exam Topics:

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Refer to the exhibit. An engineer is preparing to implement data plane security configuration.

Which statement about this configuration is true?

Router 2 is the router receiving the DDoS attack.
Router 1 must be configured with uRPF for the RTBH implementation to be effective.
Router 1 is the trigger router in a RTBH implementation.
Router 2 must configure a route to null 0 for network 192.168.1.0/24 for the RTBH implementation to be complete.

Answer(s): C

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QUESTION: 15 Exam Topics:

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Which configuration modifies Local Packet Transport Services hardware policies?

Answer(s): C

Reference:

https://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-1/addr_serv/command/ reference/b_ipaddr_cr41crs/b_ipaddr_cr41crs_chapter_0111.html#wp1754734006

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