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Free Cisco 300-410 ENARSI Practice Questions 2026 Part4

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Question #1
How is VPN routing information distributed in an MPLS network?
A. The top level of the customer data packet directs it to the correct CE device
B. It is established using VPN IPsec peers
C. It is controlled through the use of RD
D. It is controlled using of VPN target communities
View answer
Correct Answer: D

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Question #2
IPv6 is enabled in the infrastructure to support customers with an IPv6 network over WAN and to connect the head office to branch offices in the local network. One of the customers is already running IPv6 and wants to enable IPv6 over the DMVPN network infrastructure between the headend and branch sites.Which configuration command must be applied to establish an mGRE IPv6 tunnel neighborship?
A. ipv6 nhrpholdtime 30
B. tunnel mode gre multipoint ipv6
C. ipv6 unicast-routing
D. tunnel protection mode ipv6
View answer
Correct Answer: B
Question #3
How does an MPLS Layer 3 VPN differentiate the IP address space used between each VPN?
A. by RT
B. by address family
C. by RD
D. by MP-BGP
View answer
Correct Answer: C
Question #4
Refer to the exhibit. An engineer is trying to block the route to 192.168.2.2 from the routing table by using the configuration that is shown. The route is still present in the routing table as an OSPF route. Which action blocks the route?
A. Use an extended access list instead of a standard access list
B. Change sequence 10 in the route-map command from permit to deny
C. Use a prefix list instead of an access list in the route map
D. Add this statement to the route map: route-map RM-OSPF-DL deny 20
View answer
Correct Answer: B
Question #5
Which two protocols work in the control plane of P routers across the MPLS cloud? (Choose two.)
A. ECMP
B. LDP
C. RSVP
D. MPLS OAM
E. LSP
View answer
Correct Answer: BC
Question #6
Refer to the exhibit. Which subnet is redistributed from EIGRP to OSPF routing protocols?
A. 10
B. 10
C. 10
D. 10
View answer
Correct Answer: A
Question #7
Refer to the exhibit.Refer to the exhibit. R1 lost its directly connected EIGRP peer 172.16.33.2 (SW1). Which configuration resolves the issue?
A. key chain EIGRPkeylkey-string Cisco!interface GigabitEthernet 2
B. key chain EIGRPkeylkey-string Cisco!interface GigabitEthernet 2ip authentication mode elgrp 88 md5ip authentication key-chain elgrp 88 Cisco
C. key chain EIGRPkeylkey-string Cisco!interface GigabitEthernet 2ip authentication mode elgrp 88 md5ip authentication key-chain elgrp 88 EIGRP
D. key chain EIGRPkeylkey-string Cisco!interface GigabitEthernet 2
View answer
Correct Answer: A
Question #8
How does an MPLS Layer 3 VPN differentiate the IP address space used between each VPN?
A. by RT
B. by address family
C. by RD
D. by MP-BGP
View answer
Correct Answer: C
Question #9
Refer to the exhibit. An engineer is troubleshooting BGP on a device but discovers that the clock on the device does not correspond to the time stamp of the log entries. Which action ensures consistency between the two times?
A. Configure the service timestamps log uptime command in global configuration mode
B. Configure the logging clock synchronize command in global configuration mode
C. Configure the service timestamps log datetimelocaltime command in global configuration mode
D. Make sure that the clock on the device is synchronized with an NTP server
View answer
Correct Answer: C
Question #10
Refer to the exhibit. The OSPF neighbor relationship is not coming up. What must be configured to restore OSPF neighbor adjacency?
A. matching hello timers
B. OSPF on the remote router
C. use router ID
D. matching mtu values
View answer
Correct Answer: D
Question #11
Users report issues with reachability between areas as soon as an engineer configured summary routes between areas in a multiple area OSPF autonomous system.Which action resolves the issue?
A. Configure the area range command on the ASBR
B. Configure the summary-address command on the ASBR
C. Configure the summary-address command on the ABR
D. Configure the area range command on the ABR
View answer
Correct Answer: D
Question #12
Refer to the exhibit. Routers R1 and R2 exchange routes to each other's loopback throughOSPF. Telnet traffic must be blocked from R2 Lo0 to R1 Lo2. Which configuration resolves theissue?
A.
B.
C.
D.
View answer
Correct Answer: A
Question #13
Refer to the exhibit. What does the imp-null tag represent in the MPLS VPN cloud?
A. Pop the label
B. Impose the label
C. Include the EXP bit
D. Exclude the EXP bit
View answer
Correct Answer: A
Question #14
What is considered the primary advantage of running BFD?
A. Areduction in time needed to detect Layer 2 switched neighbor failures
B. Breduction in time needed to detect Layer 3 routing neighbor failures
C. Creduction in CPU needed to detect Layer 2 switch neighbor failures
D. Dreduction in CPU needed to detect Layer 3 routing neighbor failures
View answer
Correct Answer: B
Question #15
An engineer configured two routers connected to two different service providers using BGP with default attributes. One of the links is presenting high delay, which causes slowness in the network.Which BGP attribute must the engineer configure to avoid using the high-delay ISP link if the second ISP link is up?
A. AS-PATH
B. WEIGHT
C. MED
D. LOCAL_PREF
View answer
Correct Answer: D
Question #16
Refer to the exhibit. An engineer is trying to block the route to 192.168.2.2 from the routing table by using the configuration that is shown. The route is still present in the routing table as an OSPF route.Which action blocks the route?
A. se an extended access list instead of a standard access list
B. hange sequence 10 in the route-map command from permit to deny
C. se a prefix list instead of an access list in the route map
D. dd this statement to the route map: route-map RM-OSPF-DL deny 20
View answer
Correct Answer: B
Question #17
Refer to the exhibit. R2 is a route reflector, and R1 and R3 are route reflector clients. The route reflector learns the route to 172.16.25.0/24 from R1, but it does not advertise to R3. What is the reason the route is not advertised?
A. R2 does not have a route to the next hop, so R2 does not advertise the prefix to other clients
B. Route reflector setup requires full IBGP mesh between the routers
C. In route reflector setup, only classful prefixes are advertised to other clients
D. In route reflector setups, prefixes are not advertised from one client to another
View answer
Correct Answer: A
Question #18
Refer to the exhibit. An engineer has configured DMVPN on a spoke router.What is the WAN IP address of another spoke router within the DMVPN network?
A. 172
B. 172
C. 192
D. 192
View answer
Correct Answer: A
Question #19
Which method changes the forwarding decision that a router makes without first changing the routing table or influencing the IP data plane?
A. nonbroadcast multiaccess
B. packet switching
C. policy-based routing
D. forwarding information base
View answer
Correct Answer: C
Question #20
Refer to the exhibit. Users in the branch network of 2001:db8:0:4::/64 report that they cannot access the Internet.Which command is issued in IPv6 router EIGRP 100 configuration mode to solve this issue?
A. Issue the eigrp stub command on R1
B. Issue the no eigrp stub command on R1
C. Issue the eigrp stub command on R2
D. Issue the no eigrp stub command on R2
View answer
Correct Answer: B
Question #21
Which traffic does the following configuration allow?ipv6 access-list ciscopermit ipv6 host 2001:DB8:0:4::32 any eq sshline vty 0 4ipv6 access-class cisco in
A. ll traffic to vty 0 4 from source 2001:DB8:0:4::32
B. nly ssh traffic to vty 0 4 from source all
C. nly ssh traffic to vty 0 4 from source 2001:DB8:0:4::32
D. ll traffic to vty 0 4 from source all
View answer
Correct Answer: C
Question #22
Refer to the exhibit. A network engineer must establish communication between three different customer sites with these requirements:* Site-A: must be restricted to access to any users at Site-B or Site-C.* Site-B and Site-C: must be able to communicate between sites and share routes using OSPF.PE interface configuration:interface FastEthernet0/0ip vrf forwarding Site-A!interface FastEthernet0/1ip vrf forwarding SharedSites!interface FastEthernet0/2ip vrf forwarding SharedSitesWhich configuration meets the requirements?
A. E(config)#router ospf 10 vrf Site-A PE(config-router)#network 0
B. E(config)#router ospf 10 vrf Site-A PE(config-router)#network 0
C. E(config)#router ospf 10 vrf Site-A PE(config-router)#network 0
D. E(config)#router ospf 10 vrf Site-A PE(config-router)#network 0
View answer
Correct Answer: C
Question #23
Refer to the exhibit. An engineer configured R2 and R5 as route reflectors and noticed that not all routes are sent to R1 to advertise to the eBGP peers.Which iBGP routers must be configured as route reflectors to advertise all routes to restore reachability across all networks?
A. R1 and R4
B. R1 and R5
C. R4 and R5
D. R2 and R5
View answer
Correct Answer: C
Question #24
Which of the following statements is TRUE about the communication occurring between rtrA and rtrB in the given exhibit?
A. The only loopback interface used in the communication is the loopback 0 interface of rtrA
B. The only loopback interface used in the communication is the loopback 1 interface of rtrB
C. Both loopback 0 and loopback 1 interfaces are used for the communication between rtrA and rtrB
D. Neither loopback 0 nor loopback 1 interface is used for the communication between rtrA and rtrB
View answer
Correct Answer: A
Question #25
Refer to the exhibit. The ISP router is fully configured for customer A and customer B using the VRF-Lite feature.What is the minimum configuration required for customer A to communicate between routers A1 and A2?
A. A1interface fa0/0description To->ISPip add 172
B. A1interface fa0/0description To->ISPipvrf forwarding Aip add 172
C. A1interface fa0/0description To->ISPipvrf forwarding Aip add 172
D. A1interface fa0/0description To->ISPip add 172
View answer
Correct Answer: A
Question #26
How does an MPLS Layer 3 VPN differentiate the IP address space used between each VPN?
A. by RT
B. by address family
C. by RD
D. by MP-BGP
View answer
Correct Answer: C
Question #27
Refer to the exhibit. R1 is connected with R2 via GigabitEthernet0/0, and R2 cannot ping R1.What action will fix the issue?
A. Fix route dampening configured on the router
B. Replace the SFP module because it is not supported
C. Fix IP Event Dampening configured on the interface
D. Correct the IP SLA probe that failed
View answer
Correct Answer: C
Question #28
Refer to the exhibit.An engineer must establish multipoint GRE tunnels between hub router R6 and branch routers R1, R2, and R3.Which configuration accomplishes this task on R1?
A. interface Tunnel 1ip address 192
B. interface Tunnel 1ip address 192
C. interface Tunnel 1ip address 192
D. interface Tunnel 1ip address 192
View answer
Correct Answer: C
Question #29
Which protocol supports labeled paths between PE routers in an MPLS network?
A. DP
B. SVP
C. P-BGP
D. GP
View answer
Correct Answer: A
Question #30
Refer to the exhibit. Which interface configuration must be configured on the HUB router to enable MVPN with mGRE mode?
A. interface Tunnel0descriptionmGRE - DMVPN Tunnelip address 10
B. interface Tunnel0descriptionmGRE - DMVPN Tunnelip address 10
C. interface Tunnel0descriptionmGRE - DMVPN Tunnelip address 10
D. interface Tunnel0descriptionmGRE - DMVPN Tunnelip address 10
View answer
Correct Answer: C
Question #31
Refer to the exhibit. Routing protocols are mutually redistributed on R3 and R1. Users report intermittent connectivity to services hosted on the 10.1.1.0/24 prefix. Significant routing update changes are noticed on R3 when the show ip route profile command is run.How must the services be stabilized?
A. The routing loop must be fixed by reducing the admin distance of OSPF from 110 to 80 on R3
B. The routing loop must be fixed by reducing the admin distance of iBGP from 200 to 100 on R3
C. The issue with using BGP must be resolved by using another protocol and redistributing it into EIGRP on R3
D. The issue with using iBGP must be fixed by running eBGP between R3 and R4
View answer
Correct Answer: B
Question #32
Refer to the exhibit.A network administrator reviews the branch router console log to troubleshoot the OSPF adjacency issue with the DR router.Which action resolves this issue?
A. Stabilize the DR site flapping link to establish OSPF adjacency
B. Advertise the branch WAN interface matching subnet for the DR site
C. Configure the WAN interface for DR site in the related OSPF area
D. Configure matching hello and dead intervals between sites
View answer
Correct Answer: D
Question #33
How are MPLS Layer 3 VPN services deployed?
A. The RD and RT values must match under the VRF
B. The import and export RT values under a VRF must always be the same
C. The label switch path must be available between the local and remote PE routers
D. The RD and RT values under a VRF must match on the remote PE router
View answer
Correct Answer: C
Question #34
Refer to the exhibit. Troubleshoot and ensure that branch В only ever uses the MPLS В network to reach HQ.Which action achieves this requirement?
A. Introduce AS path prepending on the branch A MPLS В network connection so that any HQ advertisements from branch A toward the MPLS В network are prepended three times
B. Modify the weight of all HQ prefixes received at branch В from the MPLS В network to be higher than the weights used on the MPLS A network
C. Increase the local preference for all HQ prefixes received at branch В from the MPLS В network to be higher than the local preferences used on the MPLS A network
D. Introduce an AS path filter on branch A routers so that only local prefixes are advertised into BGP
View answer
Correct Answer: D
Question #35
How are MPLS Layer 3 VPN services deployed?
A. The RD and RT values must match under the VRF
B. The import and export RT values under a VRF must always be the same
C. The label switch path must be available between the local and remote PE routers
D. The RD and RT values under a VRF must match on the remote PE router
View answer
Correct Answer: C
Question #36
Refer to the exhibit. An engineer is trying to generate a summary route in OSPF for network 10.0.0.0/8, but the summary route does not show up in the routing table. Why is the summary route missing?
A. The summary-address command is used only for summarizing prefixes between areas
B. The summary route is visible only in the OSPF database, not in the routing table
C. There is no route for a subnet inside 10
D. The summary route is not visible on this router, but it is visible on other OSPF routers in the same area
View answer
Correct Answer: C
Question #37
When determining if a system is capable of support, what is the minimum time spacing required for a BFD control packet to receive once a control packet is arrived?
A. Desired Min TX Interval
B. Detect Mult
C. Required Min RX Interval
D. Required Min Echo RX Interval
View answer
Correct Answer: C
Question #38
Refer to the exhibit. An engineer configures the router 10.1.100.10 for EIGRP autosummarization so that R1 should receive the summary route of 10.0.0.0/8. However, R1 receives more specific /24 routes.Which action resolves this issue?
A. Router R1 should configure ip summary address eigrp (AS number) 10
B. Router R1 should configure ip route 10
C. Router 10
D. Router 10
View answer
Correct Answer: D
Question #39
Which protocol does MPLS use to support traffic engineering?
A. Tag Distribution Protocol
B. Resource Reservation Protocol
C. Label Distribution Protocol
D. Border Gateway Protocol
View answer
Correct Answer: B
Question #40
Refer to the exhibit.The output of the trace route from R5 shows a loop in the network. Which configuration prevents this loop? A) B) C) D)
A. Option A
B. Option B
C. Option C
D. Option D
View answer
Correct Answer: A
Question #41
Which transport layer protocol is used to form LDP sessions?
A. UDP
B. SCTP
C. TCP
D. RDP
View answer
Correct Answer: C

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