Cisco Implementing Cisco Enterprise Advanced Routing and Services (300-410 ENARSI) 300-410 Exam Dumps: Updated Questions & Answers (May 2026)

Question # 1

Which two statements about VRF-Lite configurations are true? (Choose two.)

They support the exchange of MPLS labels

Different customers can have overlapping IP addresses on different VPNs

They support a maximum of 512.000 routes

Each customer has its own dedicated TCAM resources

Each customer has its own private routing table.

They support IS-IS

Question # 2

Refer to the exhibit.

After applying IPsec, the engineer observed that the DMVPN tunnel went down, and both

spoke-to-spoke and hub were not establishing. Which two actions resolve the issue? (Choose two.)

Configure the crypto isakmp key cisco address 192.1.1.1 on R2 and R3

Configure the crypto isakmp key cisco address 0.0.0.0 on R2 and R3.

Change the mode from mode tunnel to mode transport on R3

Change the mode from mode transport to mode tunnel on R2.

Remove the crypto isakmp key cisco address 10.1.1.1 on R2 and R3

Question # 3

Drag and drop the MPLS terms from the left onto the correct definitions on the right.

Question # 4

A network engineer is investigating a flapping (up/down) interface issue on a core switch that is synchronized to an NTP server. Log output currently does not show the time of the flap. Which command allows the logging on the switch to show the time of the flap according to the clock on the device?

service timestamps log uptime

clock summer-time mst recurring 2 Sunday mar 2:00 1 Sunday nov 2:00

service timestamps log datetime localtime show-timezone

clock calendar-valid

Question # 5

Drag and drop the DHCP messages from the left onto the correct uses on the right.

Explanation:

DHCPACK

The server-to-client communication with configuration parameters, including committed network address.

DHCPINFORM

The client-to-server communication, asking for only local configuration parameters that the client already has externally configured as an address.

DHCPNAK

The server-to-client communication, refusing the request for configuration parameter.

DHCPDECLINE

The client-to-server communication, indicating that the network address is already in use

[Reference: https://www.cisco.com/c/en/us/support/docs/ip/dynamic-address-allocation-resolution/27470-100.html, DHCPINFORM: If a client has obtained a network address through some other means or has a manually configured IP address, a client workstation may use a DHCPINFORM request message to obtain other local configuration parameters, such as the domain name and Domain Name Servers (DNSs). DHCP servers receiving a DHCPINFORM message construct a DHCPACK message with any local configuration parameters appropriate for the client without allocating a new IP address. This DHCPACK will be sent unicast to the client., DHCPNAK: If the selected server is unable to satisfy the DHCPREQUEST message, the DHCP server will respond with a DHCPNAK message. When the client receives a DHCPNAK message, or does not receive a response to a DHCPREQUEST message, the client restarts the configuration process by going into the Requesting state. The client will retransmit the DHCPREQUEST at least four times within 60 seconds before restarting the Initializing state., DHCPACK: After the DHCP server receives the DHCPREQUEST, it acknowledges the request with a DHCPACK message, thus completing the initialization process., DHCPDECLINE: The client receives the DHCPACK and will optionally perform a final check on the parameters. The client performs this procedure by sending Address Resolution Protocol (ARP) requests for the IP address provided in the DHCPACK. If the client detects that the address is already in use by receiving a reply to the ARP request, the client will send a DHCPDECLINE message to the server and restart the configuration process by going into the Requesting state., , Reference:, https://www.cisco.com/c/en/us/support/docs/ip/dynamic-address-allocation-resolution/27470-100.html, , , ]

Question # 6

Which transport layer protocol is used to form LDP sessions?

UDP

SCTP

TCP

RDP

Question # 7

An engineer is configuring a network and needs packets to be forwarded to an interface for any destination address that is not in the routing table. What should be configured to accomplish this task?

set ip next-hop

set ip default next-hop

set ip next-hop recursive

set ip next-hop verify-availability

Question # 8

Refer to the exhibit.

An engineer is monitoring reachability of the configured default routes to ISP1 and ISP2. The default route from ISP1 is preferred if available. How is this issue resolved?

Use the icmp-echo command to track both default routes

Use the same AD for both default routes

Start IP SLA by matching numbers for track and ip sla commands

Start IP SLA by defining frequency and scheduling it

Question # 9

Refer to the exhibit.

An engineer configures a static route on a router, but when the engineer checks the route

to the destination, a different next hop is chosen. What is the reason for this?

Dynamic routing protocols always have priority over static routes.

The metric of the OSPF route is lower than the metric of the static route.

The configured AD for the static route is higher than the AD of OSPF.

The syntax of the static route is not valid, so the route is not considered.

Question # 10

Drag and drop the MPLS VPN concepts from the left onto the correct descriptions on the right.

Question # 11

Refer to the exhibit.

An IP SLA was configured on router R1 that allows the default route to be modified in the event that Fa0/0 loses reachability with the router R3 Fa0/0 interface. The route has changed to flow through

router R2. Which debug command is used to troubleshoot this issue?

debug ip flow

debug ip sla error

debug ip routing

debug ip packet

Question # 12

Refer to the following output:

Router#show ip nhrp detail

10.1.1.2/8 via 10.2.1.2, Tunnel1 created 00:00:12, expire 01:59:47

TypE. dynamic, Flags: authoritative unique nat registered used

NBMA address: 10.12.1.2

What does the authoritative flag mean in regards to the NHRP information?

It was obtained directly from the next-hop server.

Data packets are process switches for this mapping entry.

NHRP mapping is for networks that are local to this router.

The mapping entry was created in response to an NHRP registration request.

The NHRP mapping entry cannot be overwritten.

Question # 13

Which component of MPLS VPNs is used to extend the IP address so that an engineer is able to

identify to which VPN it belongs?

VPNv4 address family

LDP

Question # 14

Which list defines the contents of an MPLS label?

20-bit label; 3-bit traffic class; 1-bit bottom stack; 8-bit TTL

32-bit label; 3-bit traffic class; 1-bit bottom stack; 8-bit TTL

20-bit label; 3-bit flow label; 1-bit bottom stack; 8-bit hop limit

32-bit label; 3-bit flow label; 1-bit bottom stack; 8-bit hop limit

Question # 15

Refer to the exhibit.

Redistribution is enabled between the routing protocols, and nowPC2 PC3, and PC4 cannot reach PC1. What are the two solutions to fix the problem? (Choose two.)

Filter RIP routes back into RIP when redistributing into RIP in R2

Filter OSPF routes into RIP FROM EIGRP when redistributing into RIP in R2.

Filter all routes except RIP routes when redistributing into EIGRP in R2.

Filter RIP AND OSPF routes back into OSPF from EIGRP when redistributing into OSPF in R2

Filter all routes except EIGRP routes when redistributing into OSPF in R3.

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Cisco Implementing Cisco Enterprise Advanced Routing and Services (300-410 ENARSI) 300-410 Exam Dumps: Updated Questions & Answers (May 2026)

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