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.
 
When implementing SRv6, which SID does R2 propagate into area 0 for the prefix 2001:DB8:1:1/128?

A. 120

B. 230

C. 110

D. 10

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. 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. 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.

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

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.

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 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

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

A. It sets the keepalive timer to 30 seconds and the hold timer to 240 seconds.

B. It sets the keepalive timer to 30 milliseconds and the hold timer to 240 milliseconds

C. It sets the hold timer to 30 milliseconds and the keepalive timer to 240 milliseconds

D. It sets the hold timer to 30 seconds and the keepalive timer to 240 seconds

Refer to the exhibit. A network engineer applied configuration on R5 to summarize all OSPF routes, but R4 is still receiving specific routes from R5. The engineer has confirmed that both R5 and R4 routers are configured with correct summarization configuration, but R5 is not sending the summary routes. What action must the engineer take to fix the problem?

A. Remove summarization configuration on R5 and configure it on R4

B. Clear link-state database on both R4 and R5 routers for summarization to work

C. Configure a sham link between R4 and R5 to support summarization within Area 2

D. Move R4 and R5 in separate areas as now they maintain the same link-state database

What is the purpose of ACL type prefix set entries in RPL prefix sets?

A. They hold IPv6 prefix match specifications.

B. They hold IPv4 or IPv6 prefixes that do not match specifications.

C. They hold IPv4 or IPv6 prefix match specifications.

D. They hold IPv4 prefixes that do not match specifications.

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. 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. Which router does R1 install as an alternate next hop when trying to reach R3 if LFA is enabled?

A. R5

B. R3

C. R4

D. R2

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.
 
An engineer is troubleshooting IS-IS configuration between two areas. IS-IS Area-A network 30.1.1.0/24 is leaked into IS-IS Area-В. R2 is failing to filter the route updates from network 10.1.1.0/24. Which configuration must the engineer apply to resolve the issue?

A. R2(config)# ip prefix-list List2 seq 5 deny 10.1.1.0/24R2(config)# interface fastethernet 0/0R2(config-if)# ip router isis 100R2(config-if)# router isis 100 -R2(config-router)# distribute-list gateway List2 in

B. R2(config)# ip prefix-list List1 seq 3 deny 10.1.1.0/24R2(config)# ip prefix-list List1 seq 5 permit 30.1.1.0/24 ge 25 1eR2(config)# ip prefix-list List1 seq 10 permit 0.0.0.0/le 32R2(config)# interface fastethernet 0/0R2(config-if)# ip router isis 122R2(config-if)# router isis 122 -R2(config-router)# distribute-list prefix List1 in

C. R1(config)# ip prefix-list List2 seq 5 deny 10.1.1.0/24R1(config)# interface fastethernet 0/0R1(config-if)# ip router isis 100R1(config-if)# router isis 100 -R1(config-router)# distribute-list gateway List2 inR (config-if)# router isis 150 -R1(config-router)# distribute-list route-map Map1 in

D. R2(config)# access-list 101 deny ip any 10.1.1.0 0.0.0.127R2(config)# access-list 101 permit ip any 30.1.1.0 0.0.0.63R2(config)# access-list 101 deny ip any 0.0.0.0 0.0.0.0R2(config)# interface fastethernet 0/0R2(config-if)# ip router isis 121R2(config-if)# router isis 121 -R2(config-router)# distribute-list 101 in

Which output from the show isis interface command helps an engineer troubleshoot an IS-IS adjacency problem on a Cisco IOS-XR platform?

A. metric

B. priority

C. circuit type

D. hello interval

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. 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. 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. After a recent network implementation project, customer A is performing stress testing to verify network redundancy at the branch office connected to R4. When the link from R2 is shut down as shown, the SLA tracking object fails and the cost of the link between R2 and R4 increases to 100. However, a traceroute operation from a PC in the branch office shows that traffic to HQ is still routed via R2. Which solution corrects the problem and optimizes traffic flow via R3 without creating operational overhead?

A. Use multiarea adjacency to extend Area 10 to the link between R2 and R3.

B. Create a virtual channel from R3 to R4.

C. Configure two OSPF processes on R2 and R3 and redistribute traffic between them.

D. Redistribute routes from BGP to OSPF as type E1.

Refer to the exhibit. CE1 and CE2 cannot communicate through the service provider BGP peering is established between PE1 and PE2. IS-IS is the only routing protocol running in the service provider core. What step can be done to troubleshoot the issue?

A. Switch the IGPs running in the core from IS-IS to OSPF to support a Cisco MPLS TE tunnel from PE1 to PE2.

B. Configure BGP between CE and PE routers.

C. Confirm that IS-IS is running with metric-style narrow.

D. Verify the MPLS LSPs.

Refer to the exhibit. After troubleshooting an OSPF adjacency issue, routers 1, 2, and 3 have formed OSPF neighbor relationships. Which statement about the configuration is true?

A. Router 2 receives a Type 5 LSAs from router 1 for its connected subnets

B. Router 2 uses router 3 as the next hop for 192.168.0.0/24

C. Router 2 uses router 1 as the next hop for 192.168.0.0/24

D. Router 2 receives a Type 7 LSAs from router 3 for its connected subnets

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

Refer to the exhibit. OSPF is an interior routing protocol on the network. Routers R4 and R6 are in area 0, and all tunnels are in area 2. R4 is connected to R6 with a 1 Gbps link and with 100 Mbps links to the rest of the LAN. After the most recent maintenance window, a network engineer noticed that R4 is using a suboptimal route toward 10.173.12.10 instead of the route via R6. Which action must the network engineer take to correct reachability toward 10.173.12.10/24?

A. Configure auto-cost reference-bandwidth 1000 under the global OSPF configuration on R4.

B. Configure ip ospf cost 120 under the Gi0/0 interface on R4.

C. Configure ip ospf 2 area 0 under tunnel 3 on both R6 and R5.

D. Configure ip ospf 0 area 0 under tunnel 2 on both R4 and R5.

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. 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.
 
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. Router 1 is a core ABR in a Cisco Unified MPLS environment. All of the router 1 BGP peers are established, but traffic between customers is failing. Which BGP configuration must be added to the configuration?

A. It must be configured for graceful restart

B. It must be configured with a route reflector

C. It must be configured with send labels

D. It must be configured with PIC edge

Refer to the exhibit. Router1 and Router2 have shared routes in the OSPF database, but the routes are missing from their routing tables. Checking the prefix-list configuration on both routers, the engineer confirmed all networks are allowed. What action should the engineer take to fix the problem?

A. Configure interface Serial1/0 on Router1 as a point-to-point interface

B. Configure the two routers with different process IDs

C. Switch the DR and BDR roles between the two routers

D. Configure the two routers with different hello and dead timer values

Refer to the exhibit. Routers RA and RB are IS-IS peers configured for NSF, but router RC is an IS-IS peer without NSF capability. If RA undergoes processor switchover, what is the effect on the network environment?

A. If RC is operating without the Cisco configuration option, only 2 routers tear down their peering relationships and re-establish peering

B. All peer relationships remain up, but the link-state database is rebuilt on each device

C. If RC is operating without the Cisco configuration option, all three routers tear down their peering relationships and re-establish peering

D. All peer relationships remain up and the link-state database is unchanged

Refer to the exhibit. An engineer working for a private telecommunication company with an employee id: 1234:56:789 notices that the customer network going through AS30-AS65001-AS65000 is experiencing packet drops when it accesses an application at 172.16.20.1/32 in the DC cloud. The BGP link between AS20 and AS30 is inaccessible because of a fiber cut. Routers RL, RN, and RZ are configured with confederation identifier 10. Which action resolves this issue?

A. RX(config)#router bgp 65001 -RX(config-router)# bgp confederation peers 65000

B. RB(config)#router bgp 30 -RB(config-router)# neighbor 10.10.10.3 remote-as 65001

C. RM(config)#router bgp 65000 -RM(config-router)# bgp confederation peers 65001

D. RX(config)#router bgp 65001 -RX(config-router)# no synchronizationRX(config-router)# bgp confederation identifier 10

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

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.

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.

Refer to the exhibit.
 
An engineer is troubleshooting connectivity issues on the MPLS core network. A customer connected through R4 cannot reach the OSPF domain on R5. While checking the routing table of R1, the engineer cannot see all the routes from R3 and R5. Which task must the engineer perform so that R4 is able to reach R5?

A. Enable OSPF peering and configure route redistribution between routers R4 and R1.

B. Enable route filtering between routers R1 and R3.

C. Enable MP-BGP peering on routers R1, R3, R4, and R5.

D. Enable OSPF on the Area-0 routers and configure MP-BGP between routers R1 and R3.

Which statement about BFD on Cisco IOS XR Software is true?

A. Cisco IOS XR router must use LDP to route back to the Cisco IOS router to establish the peer relationship.

B. Cisco IOS XR Software does not support BFD multihop for IPv4.

C. Cisco IOS XR router must use dynamic routing or a static route back to the Cisco IOS router to establish the peer relationship.

D. BFD is not compatible between Cisco IOS XR and Cisco IOS Software.

Refer to the exhibit. CE1 is the gateway router into the provider network via PE1. A network operator must inject a default route into OSPF area 0. All devices inside area 0 must be able to reach PE1. Which configuration achieves this goal?
A.
 
B.
 
C.
 
D.
 

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. Routers R1, R2, R3, and R4 have been configured to run OSPF, and router R5 is running EIGRP. Traffic from R1 to R5 is expected to pass via R4, but OSPF routing has calculated the best path R3. Which action corrects the problem?

A. Reconfigure R1 in Area 0

B. Configure R3 to use metric-type 1 with a higher metric than R4

C. Configure R1 with a static route to the R5 networks and set R5 as the next hop

D. Change the metric-type value on R3 to 2

Which two conditions must be met before separate ISPs can provide interdomain multicast routing? (Choose two.)

A. Each ISP must configure MSDP to connect its individual multicast administrative domain to the domains at other ISPs.

B. Each ISP must dedicate a single router to handle multicast traffic between providers.

C. Each ISP must replace its RP assignment with a global RP.

D. Each ISP must configure its network to use PIM-DM.

E. Each ISP must support intradomain multicast routing.

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 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 exhibits. All links inside the network are configured at a default cost of one inside the fully converged OSPF domain. Given the configuration from XR1, which interface does traffic from XR1 that is destined to the loopback interface of XR6 select for the exiting interface?

A. Interface GigabitEthernet 0/0. The tie breaker of the path cost being lower. The node index priority does not impact this selection process.

B. Interface GigabitEthernet 0/1. The tie breaker of the path cost being lower. The node index priority does not impact this selection process.

C. Interface GigabitEthernet 0/0. The tie breaker of the node index priority is lower and trumps the path cost.

D. Interface GigabitEthernet 0/1. The tie breaker of the node index priority is lower and trumps the path cost.

Refer to the exhibit. An engineer working for a private telecommunication company with an employee id: 1234:09:567 implemented this configuration on Router1, what is the effect of it?

A. Router 1 receives only one best path from neighbor 192.168.1.1

B. Router 1 sends only one best path to neighbor 192.168.1.1

C. Router 1 sends up to three paths to neighbor 192.168.1.1 for all routes

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

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. 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.

A network engineer is troubleshooting OSPF multiarea. Which Cisco IOS XR feature should the engineer use in order to streamline OSPF issue?

A. hierarchical CLI

B. DR support for topology management

C. routing process enabled by default on all interfaces

D. show ip ospf topology command

Refer to the exhibit. P1 and PE3 Cisco IOS XR routers are directly connected and have this configuration applied. The BGP session is not coming up. Assume that there is no IP reachability problem and both routers can open tcp port 179 to each other. Which two actions fix the issue? (Choose two.)

A. Change MD5 to HMAC-SHA1-12

B. Change MD5 to HMAC-ESP

C. Change MD5 to SHA-1

D. Change MD5 to HMAC-MD5

E. Remove the send and accept lifetime under key 1