Question 1

Which two are characteristics of using a non-MPLS peer-to-peer model over a traditional overlay model? (Choose two.)

Accepted Answer

C,E

Question 2

Which utility can you use to validate an LSP in an MPLS environment?

Accepted Answer

MPLS LSP ping is a utility specifically designed to validate Label Switched Paths (LSPs) in an MPLS environment by sending echo requests and verifying the path.

Question 3

You try to configure MPLS VPN VRF Selection based on a source IP address on an interface that has VRF configured, but you receive an error. Which action must you take to correct the problem?

Accepted Answer

To configure MPLS VPN VRF selection based on a source IP address, the VRF must not be applied directly to the interface. Removing the VRF from the interface allows for the correct configuration of VRF selection based on source IP.

Question 4

While configuring the VRF Selection feature, you get an error message after typing the below statement: Router(config)#no vrf selection source 172.16.0.0 255.255.0.0 vrf VRF1 Which action caused this message?

Accepted Answer

The error message is caused by attempting to remove a VRF Selection entry that does not exist.

Question 5

While troubleshooting EoMPLS configuration problems, which three parameters should an engineer match between the two ends of the pseudowire configurations? (Choose three.)

Accepted Answer

The pseudowire ID, MTU size, and control word usage must match between the two ends of the pseudowire configurations.

Question 6

Refer to the exhibit. Which result occurs when PE1 learns a new MAC address and all three PEs are enabled with EVPN native?

Accepted Answer

The answer of  Refer to the exhibit. Which result...

Question 7

In a typical service provider environment, which two tools are used to help scale PE router connectivity requirements? (Choose two.)

Accepted Answer

Route reflectors and confederations are used to help scale PE router connectivity requirements in a typical service provider environment. Route reflectors allow multiple PEs to share the same routing table, reducing the amount of routing information that needs to be exchanged between PEs. Confederations allow multiple ASes to be grouped together into a single routing domain, reducing the number of routing tables that need to be maintained.

Question 8

An engineer is investigating an MPLS LDP issue. Which command should an engineer use on a Cisco IOS XE device to display the contents of the LFIB?

Accepted Answer

The command "show mpls forwarding-table" is used to display the contents of the Label Forwarding Information Base (LFIB) on a Cisco IOS XE device.

Question 9

Refer to the exhibit. If the two devices are operating normally, which two conclusions can you draw from this configuration? (Choose two.)

Accepted Answer

The answer of  Refer to the exhibit. If the...

Question 10

While troubleshooting an AToM L2VPN service, a network consultant notices that the AC Layer 2 encapsulations are different. Which action should the consultant take in order to make the MPLS L2VPN work?

Accepted Answer

The consultant should configure interworking IP on both AC terminations on the PEs to handle different Layer 2 encapsulations and ensure proper communication across the MPLS L2VPN.

Question 11

Refer to the exhibit. A network engineer has been called to configure the four PE devices in order to enable full communication among the four CE devices connected to them. While starting to configure, he experienced a connectivity issue. Which two tasks should the engineer perform in order to begin the process correctly? (Choose two.)

Accepted Answer

The answer of  Refer to the exhibit. A network...

Question 12

Refer to the exhibit. An engineer is implementing an MPLS P2MP TE solution. Which type of router can serve as the midpoint router and the tailend router in this P2MP TE network implementation?

Accepted Answer

The answer of  Refer to the exhibit. An engineer...

Question 13

Which two BGP attributes prevent loops in a route reflector environment? (Choose two.)

Accepted Answer

The answer of Which two BGP attributes prevent loops in...

Question 14

The CTO of a company requires the support of a network consultant to deliver an MPLS solution without resigning to a certain degree of redundancy and scalability. Which solution effectively scales to hundreds or thousands of sites?

Accepted Answer

L3VPN using a hierarchical topology of N-PEs and U-PEs effectively scales to hundreds or thousands of sites by organizing the network into a more manageable structure, allowing for better redundancy and scalability.

Question 15

A network architect is troubleshooting the L2TPv3 tunneling security due to the untrusted nature of the underlaying network. Which two L2TPv3 features does the architect deploy to address the ongoing issues? (Choose two.)

Accepted Answer

The answer of A network architect is troubleshooting the L2TPv3...

Question 16

Which two frames can be configured on an Ethernet flow point? (Choose two.)

Accepted Answer

The answer of Which two frames can be configured on...

Question 17

An engineer needs to improve MPLS network management by implementing a set of tools to support the NOC engineers in troubleshooting network failures. Which feature should the engineer implement to check the connectivity of the MPLS LSP between the ingress and egress PE routers?

Accepted Answer

MPLS OAM (Operations, Administration, and Maintenance) provides tools for monitoring and troubleshooting MPLS networks, including checking the connectivity of MPLS LSPs (Label Switched Paths) between ingress and egress PE routers.

Question 18

Which two statements describe primary differences between MPLS Layer 2 and Layer 3 VPNs? (Choose two.)

Accepted Answer

The answer of Which two statements describe primary differences between...

Question 19

You are troubleshooting ARP connectivity issues for an Ethernet interface on an IOS XR network that runs IS-IS. You verify that the IGP protocol is running, but an ARP entry has not yet been created. Which action should you take?

Accepted Answer

Pinging the connected neighbor will generate ARP requests, which can help in creating the ARP entry if the neighbor is reachable.

Question 20

An ISP provides a major client MPLS VPN for managed services. The MPLS engineering team needs to use the advanced VPN feature of selective VRF import so that only specific prefixes are present in the required VPNs. Which aspect of this feature must the team consider?

Accepted Answer

Selective VRF import requires that a route is imported into the VRF only if it matches at least one route target (RT) configured in the VRF and is permitted by the import route map.

Exam 15: Implementing Cisco Service Provider VPN Services (SPVI)