Question 1

Refer to the exhibit. Which statement about the status of the neighbor relationship between R1 and R2 is true?
A) The neighbor relationship is down because the two routers are configured with different area types.
B) The neighbor relationship is down because the two routers are in the same subnet.
C) The neighbor relationship is up because R2 is level 1 and Ievel 2 router.
D) The neighbor relationship is down because R2 is operating as a Level 1 router and the two routers are in different areas.

Accepted Answer

The answer of  Refer to the exhibit. Which statement...

Question 2

Which two tasks must you perform when you implement LDP NSF on your network? (Choose two.)
A) Enable NSF for BGP.
B) Implement direct connections for LDP peers.
C) Enable NSF for EIGRP.
D) Disable Cisco Express Forwarding.
E) Enable NSF for the link-state routing protocol that is in use on the network.

Accepted Answer

The answer of Which two tasks must you perform when...

Question 3

Refer to the exhibit Which effect of this configuration is true?
A) The two routers fail to form a neighbor relationship because they have different IS-IS area types.
B) The two routers successfully form a neighbor relationship.
C) The two routers fail to form a neighbor relationship because the authentication configuration is missing.
D) The two routers fail to form a neighbor relationship because their system IDs are different.

Accepted Answer

The answer of  Refer to the exhibit Which effect...

Question 4

Refer to the exhibit. Which purpose of implementing NSF with this configuration is true?
A) The router uses NSF to handle RP switchover while allowing neighbor relationships to remain up.
B) The router uses NSF to reduce neighbor-relationship downtime during RP switchover.
C) The router uses NSF to load balance traffic on a routed EtherChannel.
D) The router uses NSF to load balance traffic between two links, with the primary link alternating every 90 seconds.

Accepted Answer

The answer of  Refer to the exhibit. Which purpose...

Question 5

Which task must be performed first to implement BFD in an IS-IS environment?
A) Configure BFD in an interface configuration mode.
B) Disable Cisco Express Forwarding on all interfaces running routing protocols other than IS-IS.
C) Configure all IS-IS routers as Level 2 devices.
D) Configure BFD under the IS-IS process.

Accepted Answer

To implement BFD (Bidirectional Forwarding Detection) in an IS-IS environment, you must first configure BFD under the IS-IS process to enable BFD for IS-IS routing.

Question 6

Which BGP attribute is used first when determining the best path?
A) origin
B) AS path
C) local preference
D) weight

Accepted Answer

The weight attribute is the first criterion used by BGP when determining the best path. It is a Cisco-specific attribute and is not propagated to other routers.

Question 7

Refer to the exhibit. Which statement about the neighbor statements for 192.168.1.1 is true?
A) The router sends BGP labels for its prefixes to this peer.
B) The router must have TDP configured for the send-label command to operate.
C) The neighbor router receives at least four labels from this router.
D) The router sends only a label for the prefix for Loopback0.

Accepted Answer

The answer of  Refer to the exhibit. Which statement...

Question 8

Refer to the exhibit. Which two statements about the IS-IS topology are true? (Choose two.)
A) R1 and R4 are Level 2 neighbors.
B) All four routers are operating as Level 1-2 routers.
C) All four routers are operating as Level 2 routers only.
D) All four routers are operating as Level 1 routers only.
E) R1 and R2 are Level 2 neighbors.

Accepted Answer

The answer of  Refer to the exhibit. Which two...

Question 9

Refer to the exhibit. On R1, which output does the show isis neighbors command generate?
A) 
B) 
C) 
D)

Accepted Answer

The answer of  Refer to the exhibit. On R1,...

Question 10

A network engineer must enable the helper router to terminate the OSPF graceful restart process if it detects any changes in the LSA. Which command enables this feature?
A) nsf ietf helper disable
B) nsf cisco helper disable
C) nsf ietf helper strict-lsa-checking
D) nsf cisco enforce global

Accepted Answer

The answer of A network engineer must enable the helper...

Question 11

Refer to the exhibit. In which way does router R1 operate differently than router R2?
A) R1 sends LSA types 5 and 7, while R2 sends type 1, 2, and 7 LSAs.
B) R1 sends LSA type 2 only, while R2 sends type 1 and type 7 LSAs.
C) R1 sends LSA type 2 only and R2 sends LSA type 1 only.
D) R1 sends LSA types 1 and 2, while R2 sends type 1,2, and 7 LSAs.

Accepted Answer

The answer of  Refer to the exhibit. In which...

Question 12

Refer to the exhibit. An engineer wants to authenticate the OSPF neighbor between PE-A and PE-B using MD5. Which command on PE-B successfully completes the configuration?
A) PE-B(config-if)#ip ospf message-digest-key 1 md5 44578611 PE-B(config-if)#ip ospf authentication null
B) PE-B(config-if)#ip ospf authentication key-chain 44578611
C) PE-B(config-if)#ip ospf message-digest-key 1 md5 44568611
D) PE-B(config-if)#ip ospf authentication message-digest

Accepted Answer

The answer of  Refer to the exhibit. An engineer...

Question 13

How much must the MTU be increased when configuring the 802.1q VLAN tag?
A) 2 bytes
B) 4 bytes
C) 8 bytes
D) 12 bytes

Accepted Answer

The answer of How much must the MTU be increased...

Question 14

Refer to the exhibit Router R1 and its peer R2 reside on the same subnet in the network. If an engineer implements this configuration to R1, how does it make connections to R2?
A) R1 establishes TCP connections that are authenticated with a clear-text password.
B) R1 establishes UDP connections that are authenticated with an MD5 password.
C) R1 establishes UDP connections that are authenticated with a clear-text password.
D) R1 establishes TCP connections that are authenticated with an MD5 password.

Accepted Answer

The answer of  Refer to the exhibit Router R1...

Question 15

Refer to the exhibit. What is the result of this configuration?
A) Router 1 opens and closes a TCP connection to the TACACS+ server every time a user requires authorization
B) Router 1 and the TACACS+ server maintain one open connection between them only when network administrator is accessing the router with password ciscotest
C) Router 1 and the TACACS+ server maintain one open connection between them
D) Router 1 opens and closes a TCP connection to the TACACS+ server every time a user requires authentication

Accepted Answer

The answer of  Refer to the exhibit. What is...

Question 16

Which two IS-IS parameters must match before two Level 2 peers can form an adjacency? (Choose two.)
A) hello timer setting
B) authentication settings
C) area ID
D) system ID
E) MTU

Accepted Answer

Authentication settings and MTU must match for two Level 2 IS-IS peers to form an adjacency.

Question 17

Egress PE NAT is being used via a single centralized router to provide Internet access to L3VPN customers. Which description of the NAT operation is true?
A) The NAT table contains a field to identify the inside VRF of a translation.
B) Multiple address pools are needed for the same L3VPN because each site has a separate NAT.
C) The different L3VPNs using the Internet access must not have IP overlaps internally.
D) Users in different VRFs cannot share the same outside global IP address.

Accepted Answer

The NAT table must have a field to identify the inside VRF of a translation to ensure that the correct VRF context is used for each translation, allowing multiple VRFs to share the same NAT router.

Question 18

Refer to the exhibit. Assume all other configurations are correct and the network is otherwise operating normally. Which conclusion can you draw about the neighbor relationship between routers R1 and R2?
A) The neighbor relationship is up.
B) The neighbor relationship will be up only if the two devices have activated the correct neighbor relationships under the IPv4 address family.
C) The neighbor is down because the local-as value for R2 is missing in the R1 neighbor statement. The neighbor is down because the local-as value for R2 is missing in the R1 neighbor statement.
D) The neighbor relationship is down because R1 believes R2 is in AS 65012.

Accepted Answer

The answer of  Refer to the exhibit. Assume all...

Question 19

Refer to the exhibits. R1 and R2 are directly connected and IS-IS routing has been enabled between R1 and R2. R1 generates the above log message periodically. Based on this output, which statement is true?
A) IS-IS neighbor authentication is failing for Level 2 PDUs only.
B) IS-IS neighbor authentication is failing for Level 2 first and then for Level 1 PDUs.
C) IS-IS neighbor authentication is failing for Level 1 and Level 2 PDUs.
D) IS-IS neighbor authentication is failing for Level 1 PDUs only.

Accepted Answer

The answer of  Refer to the exhibits. R1 and...

Question 20

Refer to the exhibit. Which condition must be met by the OSPF peer of router R1 before the two devices can establish communication?
A) The OSPF peer must use clear-text authentication.
B) The OSPF peer must be configured as an OSPF stub router.
C) The interface on the OSPF peer may have a different key ID, but it must use the same key value as the configured interface.
D) The interface on the OSPF peer must use the same key ID and key value as the configured interface.

Accepted Answer

The answer of  Refer to the exhibit. Which condition...

Exam 39: Implementing and Operating Cisco Data Center Core Technologies (DCCOR)

Refer to the exhibit. Which statement about the status of the neighbor relationship between R1 and R2 is true?

Which two tasks must you perform when you implement LDP NSF on your network? (Choose two.)

Refer to the exhibit Which effect of this configuration is true?

Refer to the exhibit. Which purpose of implementing NSF with this configuration is true?

Which task must be performed first to implement BFD in an IS-IS environment?

Which BGP attribute is used first when determining the best path?

Refer to the exhibit. Which statement about the neighbor statements for 192.168.1.1 is true?

Refer to the exhibit. Which two statements about the IS-IS topology are true? (Choose two.)

Refer to the exhibit. On R1, which output does the show isis neighbors command generate?

A network engineer must enable the helper router to terminate the OSPF graceful restart process if it detects any changes in the LSA. Which command enables this feature?

Refer to the exhibit. In which way does router R1 operate differently than router R2?

Refer to the exhibit. An engineer wants to authenticate the OSPF neighbor between PE-A and PE-B using MD5. Which command on PE-B successfully completes the configuration?

How much must the MTU be increased when configuring the 802.1q VLAN tag?

Refer to the exhibit Router R1 and its peer R2 reside on the same subnet in the network. If an engineer implements this configuration to R1, how does it make connections to R2?

Refer to the exhibit. What is the result of this configuration?

Which two IS-IS parameters must match before two Level 2 peers can form an adjacency? (Choose two.)

Egress PE NAT is being used via a single centralized router to provide Internet access to L3VPN customers. Which description of the NAT operation is true?

Refer to the exhibit. Assume all other configurations are correct and the network is otherwise operating normally. Which conclusion can you draw about the neighbor relationship between routers R1 and R2?

Refer to the exhibits. R1 and R2 are directly connected and IS-IS routing has been enabled between R1 and R2. R1 generates the above log message periodically. Based on this output, which statement is true?

Refer to the exhibit. Which condition must be met by the OSPF peer of router R1 before the two devices can establish communication?