QUESTION 141
What occurs when a high bandwidth multicast stream is sent over an MVPN using Cisco hardware?

A. A data and default MDT are created to flood the multicast stream out of all PIM-SM neighbors.
B. The traffic uses the default MDT to transmit the data only if it is a (S, G) multicast route entry.
C. A data MDT is created to if it is a (*, G) multicast route entries.
D. A data MDT is created to allow for the best transmission through the core for (S, G) multicast route entries.

Correct Answer: D

QUESTION 142
Which condition must be met for Tl-LFA to protect LDP traffic?

A. The protected destination must have an associated LDP label and prefix-SID.
B. For single-segment protection, the PQ node must be LDP and SR-capable.
C. For double-segment protection, the P and Q nodes must be SR-capable.
D. The point of local repair must be LDP-capable.

Correct Answer: C

QUESTION 143
After troubleshooting multiple outages on the network due to repeated configuration errors, the network architect asked an engineer to enable NETCONF to facilitate future configurations. The configuration must enable syslog messaging to record NETCONF notifications from each of the numerous devices on the network. Which configuration must the engineer apply?

A. username ciscotesttaker privilege 15 password 0 ciscotest
aaa new-model
aaa authorization exec default local
snmp-server community ciscotest RW
netconf-yang cisco-ia snmp-community-string ciscotest
logging history warnings
B. netconf-yang
username ciscotesttaker privilege 15 password 0 ciscotest
aaa new-model
aaa authorization exec default local
snmp-server community ciscotest RW
netconf-yang cisco-ia snmp-community-string ciscotest
logging history debugging
C. username ciscotesttaker privilege 15 password 0 ciscotest
aaa new-model
aaa authorization exec default local
snmp-server community ciscotest RW
netconf-yang cisco
logging history critical
D. netconf-yang
username ciscotesttaker privilege 15 password 0 ciscotest
snmp-server community ciscotest RW
netconf-yang cisco-ia snmp-community-string ciscotest
logging history informational

Correct Answer: B

QUESTION 144
After a series of unexpected device failures on the network, a Cisco engineer is deploying NSF on the network devices so that packets continue to be forwarded during switchovers. The network devices reside in the same building, but they are physically separated into two different datacenters. Which task must the engineer perform as part of the deployment?

A. Implement VRFs and specify the forwarding instances that must remain active during failover.
B. Implement OSPF to maintain the link-state database during failover.
C. Implement Cisco Express Forwarding to provide forwarding during failover.
D. Implement an L2VPN with the failover peer to share state information between the active and standby devices.

Correct Answer: C

QUESTION 145
BGP has been implemented on a IOS XR router. Which configuration sends BGP IPv4 labels to build inter-domain LSPs?

A. router bgp 65515
neighbor 172.16.70.23
address-family ipv4 labeled-unicast
B. router bgp 65515
address-family ipv4 unicast
neighbor 172.16.70.23 send-community extended
C. router bgp 65515
address-family ipv4 unicast
neighbor 172.16.70.23 send-community
D. router bgp 65515
no bgp default ipv4-unicast

Correct Answer: A

QUESTION 146
A network engineer is configuring a router to send multicast traffic for the 239.10.10.10 group. Which configuration must an engineer apply to the router to implement IGMP and forward the traffic?

A. Cisco(config)# interface ethernet 1/0
Cisco(config-if)# ip igmp join-group 239.10.10.10
B. Cisco(config)# interface ethernet 1/0
Cisco(config-if)# ip igmp max-groups action replace
C. Cisco(config)# interface ethernet 1/0
Cisco(config-if)# ip igmp filter
D. Cisco(config)# interface ethernet 1/0
Cisco(config-if)# ip igmp access-group 239.10.10.10

Correct Answer: A

QUESTION 147
A network engineer is deploying VRF on ASBR router R1. The interface must have connectivity over an MPLS VPN Inter-AS Option AB network. Which configuration must the engineer apply on the router to accomplish this task?

A. R1(config)# interface ethernet 1/0
R1(config-if)# ip vrf forwarding CISCO
R1(config-if)# ip ospf 1 area 0
B. R1(config)# interface ethernet 1/0
R1(config-if)# ip vrf forwarding CISCO
R1(config-if)# mpls ip
C. R1(config)# interface ethernet 1/0
R1(config-if)# ip vrf forwarding CISCO
R1(config-if)# mpls bgp forwarding
D. R1(config)# interface ethernet 1/0
R1(config-if)# ip address 192.168.1.254 255.255.255.0
R1(config-if)# ip vrf forwarding CISCO
R1(config-if)# shutdown

Correct Answer: C

QUESTION 148
Which module refers to the network automation using Ansible?

A. the iosxr_logging module to run debugging for severity levels 2 to 5
B. the iosxr_user module to manage banners for users in the local database
C. the iosxr_system module to collect facts from remote devices
D. the iosxr_command module to issue run commands on remote devices

Correct Answer: C

QUESTION 149
What is the characteristic of the TI-LFA?

A. It guarantees a loop-free path for all interfaces in the OSPF super backbone.
B. It guarantees a loop-free path for all areas configured in OSPF.
C. It applies only on the instance and makes all the interfaces inherit the configuration.
D. It applies on the area and instance and makes all the interfaces inherit the configuration.

Correct Answer: D

QUESTION 150
After implementing MPLS protocol for multiple VRFs on a single Cisco device, the engineer notices all VRFs on the router still do not have the LDP session protection feature enabled. Which configuration must the engineer apply to enable the LDP session protection feature for LDP neighbors within each VRF?

A. Configure LDP session protection globally on the device only.
B. Configure LDP session authentication on the device to enable LDP session protection on each VRF automatically.
C. Configure LDP session protection globally on the device and on each neighbor that requires session protection.
D. Configure LDP session protection within the individual VRFs.

Correct Answer: D

QUESTION 151
A company needs to improve the use of the network resources that it uses to deploy Internet access services. The company deploys L3VPN and Internet access services to customers on separate backbone and Internet access networks. Which two major design models should be used to configure MPLS L3VPNs and Internet services in the same MPLS backbone? (Choose two.)

A. Internet access through leaking of Internet routes from the global table into the L3VPN VRF
B. Internet access for global routing via a separate interface in a VRF
C. carriage of full Internet routes in a VPN, in the case of Internet access VPNS
D. Internet routing through global routing on a PE router
E. Internet access routing as another VPN in the ISP network

Correct Answer: AD

QUESTION 152
Which two PHY modes are available to implement an IOS XR 10 Gigabit Ethernet interface? (Choose two.)

A. SONET
B. WAN
C. MAN
D. WDWM
E. LAN

Correct Answer: BE

QUESTION 153
After a possible security breach, the network administrator of an ISP must verify the times that several different users logged into the network. Which command must the administrator enter to display the login time of each user that activated a session?

A. show netconf-yang sessions
B. show platform software yang-management process
C. show netconf-yang datastores
D. show netconf-yang sessions detail

Correct Answer: D

QUESTION 154
Which type of attack is a Protocol attack?

A. SYN flood
B. HTTP flood
C. TFTP flood
D. Slowloris

Correct Answer: B

QUESTION 155
What is a characteristic of prefix segment identifier?

A. It contains a router to a neighbor.
B. It is globally unique.
C. It contains the interface address of the device per each link.
D. It is locally unique.

Correct Answer: B

QUESTION 156
An engineer implemented LDP protocol on the ISP network. The engineer must ensure that there are no packet loss issues when IGP and LDP protocols are not synchronized. Which configuration must the engineer implement so that the IGP routing protocol will wait until LDP convergence is completed?

A. Configure MPLS LDP IGP synchronization on the network.
B. Disable IP CEF on routers running LDP and enable LDP protocol.
C. Configure LDP sessions protection on the network.
D. Disable MPLS LDP IGP synchronization on the network

Correct Answer: A

QUESTION 157
What is the function of the FEC field within the OTN signal structure?

A. It allows source nodes to discard payload errors before transmitting data on the network.
B. It allows deep inspection of data payload fields.
C. It allows the sending devices to apply QoS within the OTN forwarding structure.
D. It allows receivers to correct errors upon data arrival.

Correct Answer: D

QUESTION 158
How is a telemetry session established for data analytics?

A. A destination initiates a session to a router.
B. A router initiates a session using the dial-out mode to a destination.
C. The destination initiates a session using the dial-out mode to the router.
D. A router requests the data using Telnet

Correct Answer: B

QUESTION 159
An engineer is developing a configuration script to enable dial-out telemetry streams using gRPC on several new devices. TLS must be disabled on the devices. Which configuration must the engineer apply on the network?

A. telemetry model-driven
destination-group ciscotest
address family ipv4 192.168.1.0 port 57500
encoding self-describing-gpb
protocol grpc
commit
B. telemetry model-driven
destination-group ciscotest
address family ipv4 192.168.1.0 port 57500
encoding self-describing-gpb
protocol grpc no-tls
commit
C. telemetry model-driven
destination-group DGroup1
address family ipv4 172.0.0.0 port 5432
encoding self-describing-gpb
protocol tcp
commit
D. telemetry model-driven
destination-group ciscotest
address family ipv4 192.168.1.0 port 57500
encoding self-describing-gpb
protocol grpc tls-hostname ciscotest.com
commit

Correct Answer: B

QUESTION 160
A remote operation center is deploying a set of I-BGP and E-BGP connections for multiple IOS-XR platforms using the same template. The I-BGP sessions exchange prefixes with no apparent issues, but the E-BGP sessions do not exchange routes. What causes this issue?

A. The next-hop-self command is not implemented on both E-BGP neighbors.
B. The E-BGP neighbors are not allowed to exchange information due to the customer platforms default policy.
C. The I-BGP neighbors are mistyped and HELLO packets cannot be exchanged successfully between routers.
D. A PASS ALL policy has not been implemented for the I-BGP neighbors.

Correct Answer: B