A network operator working for a telecommunication company with an employee id: 4074:92:707 is planning to implement the Nonstop Forwarding (NSR) feature on the customer’s core network. After getting the configuration ready for NSR. on which router should the operator implement NSR changes?

A. on the CE router

B. on the ASBR router

C. on the ABR router

D. on the PE router

An engineer is troubleshooting a connectivity issue across the MPLS network and is verifying the forwarding behavior of packets. Which table does the engineer look at to verify the forwarding behavior of an IP packet as it enters the MPLS network at the ingress LSR?

A. LFIB

B. LIB

C. RIB

D. FIB

Refer to the exhibit. Which tree does multicast traffic follow?

A. shared tree

B. MDT default

C. source tree

D. MDT voice

What are three requirements for a static IPv6-in-IPv4 tunnel? (Choose three.)

A. A dynamic IPv6 address must be configured

B. A dynamic IPv4 address must be configured

C. A static IPv4 address must be configured

D. A static IPv6 address must be configured

E. Each tunnel endpoint must support IPv4 and IPv6

F. Cisco Express Forwarding must be enabled

An engineer wants to map a multicast IP address to a multicast MAC. How many bits are used to make the conversion?

A. low-order 23 bits

B. higher-order 23 bits

C. lower-order 24 bits

D. high-order 24 bits

While configuring Cisco NSF awareness, a network engineer enters the bgp graceful-restart command after the BGP session is established in a router that runs IOS XE Software. Graceful restart capabilities are not exchanged. Which two actions should be taken? (Choose two.)

A. Reload the router

B. Verify that BGP route dampening is configured

C. Reduce BGP convergence time

D. Issue the clear ip bgp * command

E. Issue the show ip bgp neighbors command.

Refer to the exhibit. A network engineer just replaced five routers on this OSPF network. When the routing protocol is brought up, R5 cannot reach routes that originate on R1. The engineer verified that all connected links have established neighbor relationships. R5 reaches routes originating on R3 and R4. Which action resolves the issue?

A. Configure each link to be point-to-point.

B. Configure an OSPF virtual link to bridge Area 0 on routers R3 and R4.

C. Configure automatic neighbor discovery on R1 and R5.

D. Configure OSPF to have a contiguous Area 0.

Refer to the exhibit. A network engineer configured three new PE routers to expand the network. The new routers run the IS-IS routing protocol and reside in the data center in the same exchange as the existing routers. However, the network is now experiencing suboptimal routing. The Layer 2 configuration and VLANs are configured correctly to provide segregation between networks, but the Level 1 routes are not being converted to Level 2 routes. Which action resolves the issue?

A. On Router 1, redistribute the routes into IGP.

B. On Router 2, redistribute the routes into IGP.

C. On Router 1, summarize internal routes between areas.

D. On Router 2, summarize internal routes between areas.

Refer to the exhibit. What is the relationship between Router 1 and Router 2?

A. Router 1 centrally learns the topology of the network to aid in SR-TE path selection, and Router 2 is a node that feeds Router 1 topology information

B. Router 1 and Router 2 are participating in SR-TE tunnels and are both head-end routers

C. Router 1 and Router 2 centrally learn the topology of the network to aid in SR-TE path selection for peers

D. Router 2 is the head-end router in an SR-TE tunnel, and it is learning topology of the network from the PCE enabled on Router 1

Refer to the exhibit.
 
A network engineer configured routers R1 and R5 to run in IS-IS Level 1 mode and router R6 to run in IS-IS Level 2 mode. All other routers are running as Level 1 / Level 2 routers. An engineer expects traffic from R1 to R6 to pass via R2, but IS-IS routing has calculated the best path via R4. Which action corrects the problem?

A. Configure all routers as Level 1 routers.

B. Remove the link metric for the link from router R1 to router R2.

C. Change the link metric for the link from router R1 to router R2 to 1.

D. Configure all routers as Level 1 / Level 2 routers.

Refer to the exhibit.
 
 
The service provider operations team was alerted that hub site traffic from BGP AS 65101 to AS 65201 uses a non-primary path via the R5-R6 link. IBGP peering between R1 and R2 is up, and no fiber failure has been reported on the R2-R3 link. The team determined that the traffic flow between 10.10.10.1 and 192.168.30.1 is not considering the R1-R2-R3-R4 path.
Which action resolves this issue?

A. Add metric 5 with BGP neighbor 10.10.10.6 on R5 for receiving routes.

B. Change the metric attribute to 20 with neighbor 10.10.10.5 on R1.

C. Set the local-preference to the default value with BGP neighbor 10.10.10.3 on R2 for receiving routes.

D. Change the local-preference attribute to 50 with neighbor 10.10.10.5 on R1.

What is one of the purposes of a default Multicast Distribution Tree?

A. to handle high-bandwidth source streams

B. to define the RP for PIM sparse mode and the different leafs

C. to offload traffic from data MDT

D. to support control traffic between different VRFs

Refer to the exhibit. A network engineer implemented this segment routing configuration. Which statement about the output is true?

A. This range conflicts with the segment routing local block range.

B. The device must be reloaded for these ranges to be allocated and used.

C. The default segment routing global block range is being used on this device.

D. A nondefault segment routing global block range is being used on this device.

Refer to the exhibit. An engineer applied the summarization configuration on R1 for four networks (192.168.20.0/24 to 192.168.23.0/24) in area 1 and eight networks (192.168.32.0/24 to 192.168.39.0/24) in area 2 to stop the flooding of all the customer routes. While checking the routing table of R2, the engineer noticed that R1 is still sending only specific routes to R2. Which configuration should the engineer apply on R1 to summarize routes?

A.

B.

C.

D.

Refer to the exhibit. How are packets directed through the data plane when SRv6 is implemented?
 

A. An ordered list of segments is encoded in a routing extension header

B. The MPLS data plane is used to push labels onto IGP routes

C. A stack of labels represents an ordered list of segments

D. The packet is encapsulated with a header and trailer encoding the ordered list of segments

Refer to the exhibit.
 
R3 is:
•	failing to accept multicast RP information from Domain-A
•	advertising MSDP SA messages to R1 and R4
•	receiving SA messages only from R4
Which command must the engineer implement to resolve the issue?

A. R3# ip msdp sa-filter in 192.168.3.1

B. R3# no ip msap sa-filter in 192.168.1.1

C. R3# no ip msdp peer 192.168.1.1

D. R3# ip msdp sa-filter out 192.168.1.1

An engineer is working to implement segment routing protocol on the customer’s core network. Which step should the engineer take before the segment routing is enabled and is running with BGP?

A. Segment routing must be configured with EIGRP

B. Segment routing must be configured with ISIS

C. MPLS must be configured

D. Explicit-null must be configured for all neighbors

After an engineer configures BGP in R1, it starts receiving this message:
 
Which action makes the peering come back up again?

A. Make a soft reset to the peer

B. Set up a hello timer higher

C. Set up a hold-down timer higher

D. Set up a minimum hold-down timer higher

Refer to the exhibit. A network operator is getting the route for 10.11.11 0/24 from two upstream providers on #XR3. The network operator must configure #XR3 to force the 10.11.11.0/24 prefix to route via next hop of 10.0.0.9 as primary when available. Which of these can the operator use the routing policy language for, to enforce this traffic forwarding path?

A. weight of 0 on the prefix coming from 192.168.0.2

B. lower local preference on the prefix coming from 192.168.0.2

C. higher local preference on the prefix coming from 192.168.0.1

D. weight of 100 on the prefix coming from 192.168.0.1

Refer to the exhibit. A network operator must inject a Level 1 route from XR2 (10.16.16.0/24) into the ISIS topology. Which configuration allows the injection in a way that XR3 and XR1 have a valid and working route for 10.16.16.0/24?
A.
 
B.
 
C.
 
D.
 

Refer to the exhibit.
 
The engineering team noticed route disruptions when DSL subscriber 172.16.20.10 goes offline. In this service provider environment:
•	The OSPF backbone area is configured to advertise loopback prefixes.
•	The PE routers are running BGP-IPv4 address family in a BGP-free core topology.
•	The DSL subscriber IP subnet 172.16.20.10/32 is redistributed in BGP on PE1.
Which configuration on PE1 resolves the issue?

A.

B.

C.

D.

You have configured routing policies on a Cisco IOS XR device with routing policy language. Which two statements about the routing policies are true? (Choose two.)

A. The routing policies affect BGP-related routes only.

B. If you make edits to an existing routing policy without pasting the full policy into the CLI, the previous policy is overwritten.

C. You can change an existing routing policy by editing individual statements.

D. The routing policies are implemented in a sequential manner.

E. The routing policies are implemented using route maps.

Refer to the exhibit. Company A established BGP sessions with several ISPs. A network engineer at the company must filter out all traffic except for routes that transit AS 152. The engineer configured the filtering policy "permit _152$_(_[0-9])" on R1, but after applying the configuration, the engineer notices that other routes are still visible. Which action resolves the issue?

A. Add a second filtering policy in the format ip access-list 1 permit ^152_([0-9]+).

B. Add a second filtering policy in the format ip prefix-list 1 permit ^152^.

C. Change the filtering policy to ip explicit-path 1 permit $152^.

D. Change the filtering policy to ip as-path access-list 1 permit _152_.

Refer to the exhibit. While configuring router 2 with all the default values, a network engineer cannot see any route received in router 1. How should the engineer solve the issue?

A. Modify the IP address or mask of the interface to a valid one

B. Set up a priority different than 0 in the interface

C. Modify the router ID to be the interface IP on the serial

D. Set the network type in S1/0 to point-to-point

An engineer configured OSPF on all routers in the data center in the same exchange as other routers. Layer 2 connectivity was established. Now, the engineer plans to implement BFD to detect failures in the forwarding path. Which action must the engineer take?

A. Configure IS-IS routing before implementing BFD.

B. Configure BFD between each adjacent router.

C. Configure BFD on any one of the routers.

D. Configure CEF before implementing BFD.

An ISP has an MPLS VPN-based network with 12 PE routers. How many peerings are required between the 12 routers if the engineer has not configured route reflectors?

A. 60

B. 66

C. 78

D. 84

Refer to the exhibit. After you applied these configurations to routers R1 and R2, the two devices could not form a neighbor relationship. Which reason for the problem is the most likely?

A. The two routers cannot authenticate with one another.

B. The two routers have the same area ID.

C. The two routers have the same network ID.

D. The two routers have different IS-types.

Refer to the exhibit.
 
Excessive routes are flooding from network 150.0.0.0 into AS100. Internet traffic between AS400 and AS300 is working normally. No route controlling mechanism is applied on incoming and outgoing traffic. Which configuration resolves the issue?

A.

B.

C.

D.

Refer to the exhibit. Which two commands must the engineer configure for the company’s PIM-SM network to enable Auto-RP mappings to be sent over the FastEthernet0/0 interface, without affecting normal operation? (Choose two.)

A. enable auto-rp listener

B. enable sparse-mode

C. enable Auto-RP announcements

D. enable sparse-dense mode

E. enable dense mode

Refer to the exhibit.
 
Customer traffic from the branch site to the hub is experiencing packet drops. The engineer verified that:
•	Customer traffic from the hub is able to reach the branch site.
•	The connection between PE1 and PE2 is working normally.
•	Routers P1 and P2 are able to ping devices on the hub site.
Which action resolves the issue?

A. Redistribute the CE1 OSPF routes in the PE1 VRF.

B. Redistribute the CE2 OSPF routes in the PE2 VRF.

C. Advertise the VPNv4 routes of the branch site in CE2.

D. Advertise the VPNv4 routes of the hub in CE1.

For which reason can two BGP peers fail to establish a neighbor relationship?

A. Their BGP send-community strings are misconfigured

B. Their BGP timers are mismatched

C. Their remote-as numbers are misconfigured

D. They are both activated under an IPv4 address family

Refer to the exhibit. Which statement about this configuration is true?

A. Router 1 sends and receives multiple best paths from neighbor 192.168.1.1

B. Router 1 sends up to two paths to neighbor 192.168.1.1 for all routes

C. Router 1 receives up to two paths from neighbor 192.168.1.1 for all routes in the same AS

D. Router 1 receives only the best path from neighbor 192.168.1.1

Refer to the exhibit.
 
An engineer is configuring service traffic from router R1 to R6 as shown. Which additional configuration must the engineer implement so that the LDP and SR domains will participate and interwork with each other?

A. Router2(config)# segment-routingRouter2(config-sr)# ldp mapping-serverRouter2(config-sr-ms)# prefix-sid-mapRouter2(config-sr-ms-map)#Router2(config-sr-ms-map-af)# 2.2.2.2/32 500 range 4

B. Router2(config)# segment-routingRouter2(config-sr)# sr mapping-serverRouter2(config-sr-ms)# ldp-sid-mapRouter2(config-sr-ms-map)# address-family ipv4Router2(config-sr-ms-map-af)# 10.1.1.1/32 500 range 50

C. Router2(config)# segment-routingRouter2(config-sr)# mapping-serverRouter2(config-sr-ms)# prefix-sid-mapRouter2(config-sr-ms-map)# address-family ipv4Router2(config-sr-ms-map-af)# 10.1.1.1/32 500 range 50

D. Router2(config)# segment-routingRouter2(config-sr)# ldp mapping-serverRouter2(config-sr-ms)# prefix-sid-mapRouter2(config-sr-ms-map)# address-family ipv4Router2(config-sr-ms-map-af)# 2.2.2.2/32 500 range 40

Refer to the exhibit.
 
 
VPN users that are connected to PE routers are facing network issues. Traffic that originates from CE1 drops before reaching CE2. An engineer finds no outgoing traffic statistics on PE1 and PE2 routers toward CE devices and finds that the PE1 router is running the older software image. Which action must be implemented to resolve the issues?

A. Enable LDP protocol on PE1 and PE2 routers.

B. Advertise P1 router loopback on PE1 in OSPF.

C. Enable CEF-based forwarding on PE1 router.

D. Advertise PE2 router loopback on PE1 in OSPF.

Refer to the exhibit. A service provider has LDP and segment routing running in the network. Mobility traffic is carried through LDP and enterprise traffic is carried through segment routing. Which configuration must be implemented to connect the bank branch with the HUB site on routers?

A. Configure segment-routing sr-prefer prefix-list on CR1 and CR2 routers for 10.20.20.10/24.

B. Enable segment-routing Mpls sr-prefer on AG1 and AG2 routers for 10.0.0.0/8.

C. Configure segment-routing sr-prefer prefix-list on AG1 and AG2 router for 10.10.10.10/24.

D. Enable segment-routing Mpls sr-prefer on CR1 and CR2 routers for 10.0.0.0/8.

Refer to the exhibit. A network operator is configuring BGP PIC on CE1 on already established neighborships with PE1 and PE2 inside the fully converged MPLS network. Which element needs to be implemented to make this feature function effectively?

A. Bidirectional Forwarding Detection must be applied to the upstream facing BGP interfaces

B. The operator must ensure that all prefixes have the same next-hop from PE1 and PE2 for BGP PIC

C. A reserved BGP community of 1:10 must be used to denote the PIC feature set to the routing protocol

D. BGP import/export policies must be applied on all devices for the routes needing BGP for PIC

Refer to the exhibit.
 
Routers R1 and R2 reside in AS 65530, which is multihomed to the Internet. A network engineer expects devices in the AS to use R2 to access the Internet, but they are using R1 as the exit point from the AS. Which action corrects the problem?

A. Add a sequence number to the route map to remove the implicit deny.

B. Change the route map direction in the neighbor statement to out.

C. Configure the route map with a local preference of 200 or higher.

D. Remove the neighbor statements from the address family configuration and activate the neighbor globally on R1.

Refer to the exhibit. R1 is directly connected to R2 and R3. R1 is in BGP AS 123, R2 is in BGP AS 2, and R3 is in BGP AS 3. Assume that there is no connectivity issue between R1, R2 and R1, R3. Which result between BGP peers R1, R2 and R1, R3 is true?

A. The BGP session does not come up between R1 and R2 and between R1 and R3.

B. The BGP session comes up between R1 and R2 and between R1 and R3.

C. The BGP session comes up between R1 and R3, but not between R1 and R2.

D. The BGP session comes up between R1 and R2, but not between R1 and R3.

Refer to the exhibit.
 
After configuring IS-IS on routers R1 and R2, an engineer notices that only the loopback interface at 2000:1::1 /96 is known to router R2. Which change must be made so that only Loopback2 is advertised from R1 to R2?

A. Configure the router isis area1 command under the Loopback0 interface on R1.

B. Remove the advertise passive-only command under the IS-IS address family ipv6 configuration

C. Remove the ipv6 router isis area1 command under the Loopback2 interface on R1.

D. Remove the passive-interface Loopback0 command under the router isis area1 configuration.

Refer to the exhibit. An engineer is troubleshooting an issue with traffic steering using the color-only automated steering mechanism. BGP is failing to automatically steer traffic into an SR policy with the given color of a route, regardless of the next hop. The Layer 2 configuration is correct, and the physical connection between the devices is working normally. Which additional command sequence must the engineer add to correct the issue?

A. Cisco(config)# segment-routing -Cisco(config-sr)# traffic-eng -Cisco(config-sr-te)# policy P1 -Cisco(config-sr-te-policy)# color 1 end-point ipv4 0.0.0.0

B. Cisco(config)# segment-routing traffic-engCisco(config-sr-te)# policy P1 -Cisco(config-sr-te-policy)# color 1 end-point ipv4 1.1.1.1Cisco(config-sr-te-policy )# autorouteCisco(config-sr-te-policy-autoroute)# include all

C. Cisco(config)# segment-routing -Cisco(config-sr)# traffic-eng -Cisco(config-sr-te)# policy P1 -Cisco(config-sr-te-policy)# color 1 end ipv4 1.1.1.1Cisco(config-sr-te-policy)# autoroute include all

D. Cisco# configure -Cisco(config)# segment-routing -Cisco(config-sr)# traffic-eng -Cisco(config-sr-te)# policy P1 -Cisco(config-sr-te-policy)# color 1 end-point

SIMULATION
-
Guidelines
-
This is a lab item in which tasks will be performed on virtual devices.
•	Refer to the Tasks tab to view the tasks for this lab item.
•	Refer to the Topology tab to access the device console(s) and perform the tasks.
•	Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window.
•	All necessary preconfigurations have been applied.
•	Do not change the enable password or hostname for any device.
•	Save your configurations to NVRAM before moving to the next item.
•	Click Next at the bottom of the screen to submit this lab and move to the next question.
•	When Next is clicked, the lab doses and cannot be reopened.
Topology
-
 
Tasks
-
Configure and verify an OSPF neighbor adjacency between R1 and R2 in OSPF area 0 according to the topology to achieve these goals:
1. R1 pings the Loopback0 interface of R2. Use interface-level configuration to complete this task.
2. R2 pings the Loopback0 interface of R1. Use interface-level configuration to complete this task.
3. R2 receives a single summary route 172.16.100.0/22 for networks 172.16.100.0/24, 172.16.101.0/24, and 172.16.103.0/24.

In a PIM-SM environment, which mechanism determines the traffic that a receiver receives?

A. The receiver explicitly requests its desired traffic from the RP on the shared tree.

B. The receiver explicitly requests traffic from a single source, which responds by forwarding all traffic.

C. The RP on the shared tree floods traffic out of all PIM configured interfaces.

D. The receiver explicitly requests traffic from each desired source, which responds by sending all traffic.

A network engineer has divided AS into confederations. Due to repeated ASN, when the 10.0 0.0/8 prefix from R1 arrives to R2, BGP automatically rejects it. What should the engineer do to fix the problem so that BGP allows that prefix on R2?

A. Configure the command as-override on R1.

B. Configure the command allowas-in on R2.

C. Configure the command allowas-in on all the PE routers.

D. Configure the command as-override on R2.

What is the difference between RPL and route-maps?

A. Unlike RPL, route-maps are supported with IPv4 address families only.

B. Unlike route-maps, only RPL supports extcommunity sets to group extended communities.

C. Unlike route-maps, only RPL is designed for bulk configuration of multiple devices.

D. Unlike RPL, route-maps are designed for BGP protocol only.

Refer to the exhibit.
 
An MPLS core network has connectivity issues R4 has failed. It impacts traffic loss between R1 and R8. Customers report no access to their file servers, which delays their transformation work. Which quick action resolves the issue until R4 recovers?

A. Implement Link and Node protection on routers R2 and R7.

B. Disable traffic engineering so that traffic prefers the IGP path

C. Enable MPLS ТЕ fast reroute on router R1 and Link and Node protection on router R2.

D. Configure IBGP full mesh for faster convergence.

 
Refer to the exhibit. MPLS traffic from 192.168.4.0/24 to 192.168.5.0/24 is failing to pass over the link from R4 to R2. The engineer verified that:
•	Cisco Express Forwarding is enabled on all routers.
•	All routers reach all networks via OSPF.
•	MPLS traffic from 192.168.1.0/24 to 192.168.3.0/24 is passing normally over the link from R1 to R2.
Which action resolves the issue?

A. On router R4, configure the mpls label protocol Idp command on all serial interfaces.

B. On router R4, remove the mpls ip command on the s/0/0/2 interface.

C. On router R2, configure the mpls ip command on the s/0/0/4 interface.

D. On router R2, configure the mpls label protocol Idp command on the s/0/0/4 interface.

Refer to the exhibit. There is a connectivity issue between Customer-1 and Customer-2. File servers between the customers cannot send critical data. R3 routes are missing from the routing table on the Customer-1 router. All interfaces on Customer-1 are up. Which configuration must be applied to router R2 to correct the problem?

A.

B.

C.

D.

Refer to the exhibit. There is a BGP traffic path issue between Customer-1 and Customer-2. Users from Customer-2 have reported file transfer issues. High utilization on the path between both customers causes many packet drops. Which configuration resolves the issue?

A. R4#router bgp 65504 -neighbor 10.0.23.3 remote-as 65501neighbor 10.0.23.3 filter-list 1 outip as-path access-list 1 deny ^65505$ip as-path access-list 1 permit .*

B. R4#router bgp 65504 -address-family ipv4 unicastneighbor 10.0.23.3 remote-as 65501neighbor 10.0.23.3 activateneighbor 10.0.23.3 route-map PREPEND inexit-address-familyexitroute-map PREPEND permit 10set as-path prepend 65506 65507

C. R1#neighbor 10.0.23.3 route-map LOCAL-PREF-150 outroute-map LOCAL-PREF-150set local-preference 150

D. R1#neighbor 10.0.24.4 route-map LOCAL-PREF-150 inroute-map LOCAL-PREF-150set local-preference 150ip prefix-list 5-5-5-S seq 5 permit 5.5.5.5/32route-map LOCAL-PREF-150 permit 10match ip address prefix-list 5-S-5-5set local-preference 150

Refer to the exhibit. A network engineer applied configuration on R1 to summarize all ISIS routes, but R2 is still receiving specific routes from R1. The engineer has confirmed that both routers are configured with the correct summarization configuration, but R1 is not sending the correct summary routes. Which configuration must be applied to router R1 to summarize routes within Level 1?

A. R1(config-router)#no summary-address 1.0.0.0 255.0.0.0 level-1

B. R1(config-router)#summary-address 1.0.0.0 255.0.0.0 level-2

C. R1(config-router)#summary-address 1.0.0.0 255.0.0.0 level-1-2

D. R1(config-router)#summary-address 1.0.0.0 255.0.0.0 level-1

DRAG DROP
-
Drag and drop the characteristics from the left onto the corresponding routing protocols on the right.