Free Cisco 300-510 Practice Test & Real Exam Questions

What is the role of segment routing mapping server?

Refer to the exhibit. XR1 and XR2 are sending the prefix 10.11.11.0/24 to XR3.
A configured policy on XR1 is incorrectly prepending AS path 11 11 12 12 onto this prefix.
A network operator wants to add a policy onto XR3 that will not allow the falsely prepending prefix from being installed.
Which policy configuration applied to the XR3 neighbor configuration for XR1 can accomplish this requirement without impact to other or future received routes?

What is used by SR-TE to steer traffic through the network?

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?

Refer to the exhibit. A regional service provider provides connectivity for several midsize businesses that run mission-critical applications between multiple offices connected via PE1 and PE2. Links throughout the service provider network are connected using shared resources, and an SR-TE tunnel is in use to route traffic over different paths depending on congestion policies.
The networking team must implement SR updates to reduce downtime in the event of a link failure. Which action must the team take to meet the requirements?

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?

Refer to the exhibit. After these configurations were applied to routers R1 and R2. the two devices cannot form a neighbor relationship. What is the reason tor the problem?

Refer to the exhibit. An engineer at a large ISP is troubleshooting suboptimal routing on a customer's IS-IS network with multiple Level 1-2 routers. The network consists of numerous routers that are configured for MPLS. When IS-IS picks the closest Level 1-2 router to exit the area, suboptimal routing occurs in Area 8 and Area 10. The other IGP protocols are running correctly, and the IS-IS adjacency between routers is established. Which action resolves the issue?

Refer to the exhibit. The network is situated at different locations on the customer site. The customer runs a mission-critical application behind CE2, which is connected over a 10 GB link to the local network of the customer. After recent configuration changes to the P and PE routers, an LSP failure has occurred, causing connectivity issues. CE1 is unable to reach the CE2 internal IP address.
Which action resolves this issue?

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?

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

The ISP_A network is configured with PIMv2 with sparse mode. The engineering team at ISP_A must implement multicast support following RFC 5059 in the network. The RP priority will be 0, and the solution must require limited supervision from the operations team. Which action must the team take to meet the requirements?

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.)

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 pre-configurations 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 closes and cannot be reopened.
Topology

Tasks
R21 through R25 are routers that perform MPLS label-forwarding operations. Candidates are required to perform the below configuration and verification tasks as noted.
1. Configure R22 and R23 to discover each other as LDP-speaking routers on the connected link.
2. Ensure the logical interface is selected as the persistent identifier on both R22 and R23.
3. Modify R21 and R25 to enable the MPLS-TE tunnel to be signaled and up between them.
Initial configuration with IP addressing has been completed.
The candidate must not make any changes to the configurations except to fulfill the tasks listed above. Only use the provided logical interface for the applicable task.
*The candidates have console access to all the routers R21, R22, R23, R24 and R 25.