300-410 Online Practice Questions and Answers

Correct Answer: D

From the exhibit, we learned:

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VRF customer_a was exported with Route target (RT) of 1:1 so at the remote site it must be imported with the same RT 1:1.

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VRF customer_a was imported with Route target (RT) of 1:1 so at the remote site it must be exported with the same RT 1:1.

Therefore at the remote site we must configure the command "route-target both 1:1" (which is equivalent to two commands "route-target import 1:1" and "route-target export 1:1".

Correct Answer: D

https://www.cisco.com/en/US/technologies/tk583/tk372/technologies_white_paper0900aecd802b8f3c.html

Correct Answer: A

Translation from IPv6 Internet addresses to an IPv4 network is not supported by the stateless version of NAT64. There are two versions of NAT 64: stateful and stateless. Stateful NAT64 creates or modifies bindings or session state while

performing translation, while stateless NAT64 does not create or modify bindings or session state while performing translation/ Translation from IPv4 Internet to an IPv6 network is supported by both NAT64 methods, although the stateful

version requires static 6 to 4 mappings.

Translation from an IPv6 network to an IPv4 network is supported by both methods, stateful and stateless.

Translation from an IPv4 network to an IPv6 network is supported by both methods, although the stateful version requires static 6-to-4 mappings.

Objective:

Infrastructure Services

Sub-Objective:

Describe IPv6 NAT

References:

Home > Products and services > Cisco IOS and NX-OS software > Cisco IOS Technologies > Enterprise IPv6 solution > Data sheets and literature > NAT64 Technology: Connecting IPv6 and IPv4 Networks

Correct Answer: AD

The OSPF domain has a different mask than the RIP domain, and they are on the same major network. The OSPF domain's mask is also longer than the RIP domain's mask. Therefore, the RIP domain will not advertise routes learned from

OSPF and redistributed into RIP. To solve this problem, you can create a static route to the major (classful) network 172.16.6.0/24, which includes all of the subnets in the OSPF domain, set the destination as null0, and then redistribute static

routes into RIP. The following commands would enable this process:

router1(config)# ip route 172.16.5.0 255.255.255.0 null0

router1(config)# router rip

router1(config-router)# redistribute static

router1(config-router)# default metric 1

You should include the metric as well to ensure redistribution. This will allow the 172.16.5.0/24 network to be advertised to the RIP domain and, when the frames arrive at the null0 interface, will ensure the routing table of the router will have

routes to the specific subnets of the OSPF domain.

You should not execute the passive-interface command. This would prevent the interface from advertising either RIP or OSPF routes, and would only allow RIP updates inbound. This would not solve the problem and will create additional

problems when the router is unable to advertise RIP routes to the other routers in the RIP domain.

You should not create a loopback address on the router. Loopback addresses are logical addresses that can be created and used as the source of routing updates. Under normal circumstances, if routing updates are sourced from a physical

interface and the interface goes down, the route will be removed from the routing tables. Since a loopback interface cannot go down, it provides the advantage of keeping a route in the tables even if the physical interface that services the

route goes down. Loopback interfaces are of no help in solving the redistribution problem.

Objective:

Layer 3 Technologies

Sub-Objective:

Configure and verify manual and autosummarization with any routing protocol

References:

Cisco > Home > Support > Technology Support > IP > IP Routing > Design > Design Technotes > Redistributing Between Classful and Classless Protocols: EIGRP or OSPF into RIP or IGRP

Correct Answer: C

The no auto-summary command should be run on Routers A, B, C and F. When discontinuous networks exist in the network, as in this one, the auto summarization feature will prevent proper routing. Auto summarization is enabled by default.

Discontinuous networks are subnets of a classful parent network address not located in the same area of the network. Because Routers A, B, C and F will all advertise a 10.0.0.0/8 network Router D will not only think that the 10.0.0.0/8

network is on two different directions it will be unable to discern the individual subnets connected to each, leading to connectivity issues. Executing the no auto-summary command on those three routers will allow them to advertise subnets,

clearing up the routing confusion created by auto summarization.

The ip summary-address eigrp 500 172.16.0.0.0 255.255.0.0 command should not be run on Router D. This will manually configure the same summarization that is already occurring automatically, and will not solve the issue.

The auto-summary command should not be run on Router D. This function is already being performed automatically and is the source of the routing problem. It should be disabled instead.

Objective:

Layer 3 Technologies

Sub-Objective:

Configure and verify manual and autosummarization with any routing protocol

References:

Cisco > Support > Technology Support > IP > IP Routing > Technology Information > Technology Whitepaper > Enhanced Interior Gateway Routing Protocol > Document ID: 16406 > Summarization

Correct Answer: C

The last command "aaa authentication login telnet group TAC-SERV" created the method list name telnet so we need to assign itto line vty. Reference:https://www.cisco.com/c/en/us/support/docs/security/identity-services-engine/200208Configure-ISE-2-0-IOS-TACACS-Authentic.html

Correct Answer: A

Correct Answer: B

Correct Answer: B

Correct Answer: A