QUESTION 41
A network engineer working for a service provider has decided to configure a default route to the internet in a single VRF and make the route available to other VRFs belonging to different customers. Which solution is most appropriate?

A. multicast domain tree
B. segment routing
C. VRF-Lite
D. shared services

Correct Answer: C

QUESTION 42
How does TACACS+ facilitate secure connections for user access to network routers?

A. The user’s end device uses CHAP to securely query the network access server to authenticate the user via the TACACS+ protocol.
B. The network access server communicates securely with a TACACS+ daemon to authenticate the user.
C. The network access server communicates securely with the router via the TACACS+ protocol to authorize Telnet access by the user to specific parts of a router.
D. The user provides a password over a secure connection to the TACACS+ server for authorization.

Correct Answer: B

QUESTION 43
What is the primary purpose of routed optical networks?

A. to convert analog signals to digital signals for transmission over fiber-optic cables
B. to encrypt and secure data traveling across the network
C. to provide redundancy for failed network connections by automatically switching to backup paths
D. to simplify network management by collapsing multiple layers into a single architecture

Correct Answer: D

QUESTION 44
What is the primary purpose of Ansible in the network?

A. to automate the configuration of network devices
B. to streamline network and network-device performance testing
C. to schedule, execute, and manage network audits
D. to facilitate inventory management for network devices

Correct Answer: A

QUESTION 45
What is the primary purpose of the flexible algorithm in a segment-routing environment?

A. to integrate with legacy routing protocols to ensure backward compatibility and a smooth transition in mixed network environments
B. to determine and assign labels for specific types of traffic, ensuring that routes maintain a valid backup path as network conditions change
C. to distribute designated-path information for certain traffic classes to maintain routing information in accordance with current network-performance indicators
D. to support adaptive path selection, optimizing network performance based on real-time network metrics

Correct Answer: D

QUESTION 46
What is the primary purpose of the locator in a segment-routing environment?

A. to identify the starting point of a segment in the network
B. to load-balance traffic across multiple paths
C. to identify the next segment on the forwarding path
D. to provide path information for routing decisions

Correct Answer: A

QUESTION 47
An engineer working for a service provider must implement NSF feature in IETF mode on a router. Which command sets the time that NSF waits for the LSP database to synchronize before generating and flooding its ow LSP with the overload-bit set?

A. nsf cisco
B. nsf t3 adjacency
C. nsf interface wait 30
D. nsf t3 manual 60

Correct Answer: D

QUESTION 48
A network engineer must enable multicast on the network to support a new series of webcasts. The PIM protocol has been enabled on the LAN side, with PIM and MSDP capabilities on edge router R1. The multicast source has been configured with IP address FF3A::121, and IP protocol 58 has been enabled and successfully tested in the network. Due to the limitations of some devices on the network, the data flow should take the most efficient path. Which task must the engineer perform to achieve the goal?

A. Enable PMI BSR on R1.
B. Enable PIM-SSM across the network.
C. Implement Anycast RP on R1.
D. Implement PIM-SM in the LAN.

Correct Answer: B

QUESTION 49
A network architect at ISP_A must implement a loop-avoidance mechanism in the organization’s ring network topology. The architect decided to implement ITU-T G.8032. Intermittent link flaps within two seconds should be ignored. Which two configurations must the architect apply? (Choose two.)

A. ethernet ring g8032 profile ethernet
B. continuity-check direction down 2
C. timer hold-off 2
D. link-protection group management vlan 1
E. ring-protection g8032 profile vlan port-channel none

Correct Answer: AC

QUESTION 50
What is the primary purpose of application hosting in a service-provider virtualization environment?

A. to consolidate multiple applications onto fewer physical network compute devices
B. to leverage artificial intelligence and other algorithms for use in network-based applications
C. to provide a platform for running third-party applications directly on network devices
D. to provide a secure remote-access portal for service-provider customers to access network applications

Correct Answer: A

QUESTION 51
In MPLS traffic engineering, which FRR operation swaps the label and pushes the backup label?

A. Branch Point
B. Merge Point
C. Point of Local Repair
D. Mid-Point

Correct Answer: C

QUESTION 52
Which wildcard is used with programmable APIs to identify the values Cisco, Ciscotest, and CiscoSystems?

A. *Cisco
B. Cis?o
C. ?Cisco
D. Cisco_*_

Correct Answer: B

QUESTION 53
Which capability does Secure ZTP provide?

A. securely provisioning network devices dung initial setup
B. leveraging plain-text configuration files to simplify network setup and security
C. facilitating network device discovery with server authentication
D. enabling secure automatic discovery of neighboring devices

Correct Answer: A

QUESTION 54
According to RFC5305 on IS-IS extensions for traffic engineering, what is the 4-octet sub-TLV type 10 of extended IS-IS reachability TLV type 22?

A. IPv4 neighbor address
B. TE default metric
C. maximum reservable link bandwidth
D. administrative group (color)

Correct Answer: C

QUESTION 55
Which feature describes the weight parameter for BGP path selection?

A. Its default value is 0.
B. Its value is local to the router.
C. Its value is global to the router.
D. Its value is set either locally or globally.

Correct Answer: B

QUESTION 56
What is the benefit of implementing model-driven telemetry in a service provider environment?

A. It uses reliable transport to push information to network monitoring tools.
B. It reduces or eliminates the need to monitor Layer 2 traffic between switches.
C. It reduces the number of network monitoring tools that are necessary to verify device statistics.
D. It increases the efficiency of SNMP by pulling system data to requesting servers.

Correct Answer: A

QUESTION 57
A mid-size service provider uses L2VPN as its standard for connectivity between offices. A small company wants the service provider to connect the company’s two sites across the service provider core. To meet service requirements, the service provider must extend the Layer 2 domain between the company’s two locations. Which configuration must the engineer apply to implement an attachment circuit between the two sites using a VLAN tag of 12?

A. interface TenGigEo/0/0/1.0 l2transport
encapsulation dot1q 12
rewrite ingress tag push dot1q 21 symmetric
B. interface TenGigE0/0/0/1.0 l2transport
encapsulation dot1q 12
rewrite ingress tag pop 13
C. interface TenGigE0/0/0/1.0 l2transport
encapsulation dot1q 12
rewrite ingress tag translate 1-to-1 dot1q 2
D. interface TenGigE0/0/0/1.0 l2transport
encapsulation dot1q 12

Correct Answer: D

QUESTION 58
What is a characteristic of the Pipe model for MPLS QoS?

A. The same QoS policy is applied to all customer traffic on the egress PE.
B. The DSCP value determines how the packet is forwarded.
C. The MPLS EXP bits are set by the CE.
D. If the outer EXP is changed, it is copied to the DSCP value.

Correct Answer: A

QUESTION 59
A network operator working for a telecommunication company is trying to implement BFD configuration on an existing network of Cisco devices. Which task must the engineer perform to enable BFD on the interfaces?

A. Remove any static routes that point to the interfaces.
B. Disable SSO on the interfaces.
C. Disable Cisco Express Forwarding on the interfaces.
D. Remove the log option from any ACLs on the interfaces.

Correct Answer: D

QUESTION 60
After frequent issues with link failure between buildings on their main campus, a large company is implementing BFD to provide fast failure detection. The network engineer performing the implementation is told that the failures occur most commonly when large amounts of data are transferred. Which action must the engineer take?

A. Implement inverse ARP to map Layer 2 addresses properly for faster convergence.
B. Implement a routing protocol that supports BFD and enables fast convergence.
C. Implement Cisco Express Forwarding to exclude routers that do not support BFD
D. Implement MPLS to allow label switching to store routing decisions.

Correct Answer: C