[Free] Download New Updated (October 2016) Cisco 200-105 Real Exam 51-60

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QUESTION 51

Refer to the exhibit. What information about the interfaces on the Main_Campus router is true?

 

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A.

The LAN interfaces are configured on different subnets.

B.

Interface FastEthernet 0/0 is configured as a trunk.

C.

The Layer 2 protocol of interface Serial 0/1 is NOT operational.

D.

The router is a modular router with five FastEthernet interfaces.

E.

Interface FastEthernet 0/0 is administratively deactivated.

 

Correct Answer: B

Explanation:

Interface fa0/0 breaks into sub-interfaces and Main_Campus router is connected with switch via fa0/0 .Subinterfaces configured with different subnet masks so the same switch has multiple vlans and allows communication between these VLAN’s. For routing and inter- vlan we need to configure a trunk port. So B will be the correct answer.

 

 

QUESTION 52

DRAG DROP

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Correct Answer:

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QUESTION 53

Refer to the exhibit. The network is converged. After link-state advertisements are received from Router_A, what information will Router_E contain in its routing table for the subnets 208.149.23.64 and 208.149.23.96?

 

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A.

O 208.149.23.64 [110/13] via 190.173.23.10, 00:00:07, FastEthernet 0/0 O 208.149.23.96 [110/13] via 190.173.23.10, 00:00:16, FastEthernet 0/0

B.

O 208.149.23.64 [110/1] via 190.172.23.10, 00:00:07, Serial 1/0 O 208.149.23.96 [110/3] via 190.173.23.10, 00:00:16, FastEthernet 0/0

C.

O 208.149.23.64 [110/13] via 190.172.23.10, 00:00:07, Serial 1/0 O 208.149.23.96 [110/13] via 190.172.23.10, 00:00:16, Serial 1/0 O 208.149.23.96 [110/13] via 190.173.23.10, 00:00:16, FastEthernet 0/0

D.

O 208.149.23.64 [110/3] via 190.172.23.10, 00:00:07, Serial 1/0 O 208.149.23.96 [110/3] via 190.172.23.10, 00:00:16, Serial 1/0

 

Correct Answer: A

Explanation:

Router_E learns two subnets subnets 208.149.23.64 and 208.149.23.96 via Router_A through FastEthernet interface. The interface cost is calculated with the formula 108 / Bandwidth. For FastEthernet it is 108 / 100 Mbps = 108 / 100,000,000 = 1. Therefore the cost is 12 (learned from Router_A) + 1 = 13 for both subnets – B is not correct.

The cost through T1 link is much higher than through T3 link (T1 cost = 108 / 1.544 Mbps = 64; T3 cost = 108 / 45 Mbps = 2) so surely OSPF will choose the path through T3 link -> Router_E will choose the path from Router_A through FastEthernet0/0, not Serial1/0 – C & D are not correct.

In fact, we can quickly eliminate answers B, C and D because they contain at least one subnet learned from Serial1/0 – they are surely incorrect.

 

 

QUESTION 54

Refer to the exhibit. RTA is configured with a basic configuration. The link between the two routers is operational and no routing protocols are configured on either router. The line shown in the exhibit is then added to router RTA. Should interface Fa0/0 on router RTB shut down, what effect will the shutdown have on router RTA?

 

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A.

A route to 172.16.14.0/24 will remain in the RTA routing table.

B.

A packet to host 172.16.14.225 will be dropped by router RTA.

C.

Router RTA will send an ICMP packet to attempt to verify the route.

D.

Because router RTB will send a poison reverse packet to router
RTA, RTA will remove the route.

 

Correct Answer: A

Explanation:

Static routes remain in the routing table even if the specified gateway becomes unavailable. If the specified gateway becomes unavailable, you need to remove the static route from the routing table manually. However, static routes are removed from the routing table if the specified interface goes down, and are reinstated when the interface comes back up. Therefore the static route will only be removed from the routing table if the S0/0 interface on RTA is shutdown.

Reference: http://www.cisco.com/en/US/docs/security/asa/asa84/configuration/guide/route_static.html)

 

 

 

 

 

 

 

 

 

 

 

QUESTION 55

Refer to the exhibit. What address is a feasible successor?

 

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A.

172.16.4.0

B.

10.1.4.4

C.

10.1.2.2

D.

172.16.3.0

 

Correct Answer: C

Explanation:

The feasible condition states:

“To qualify as a feasible successor, a router must have an AD less than the FD of the current successor route”.

In this case, we see 10.1.2.2 shows an AD less than the current successor of 10.1.4.4

 

 

QUESTION 56

Refer to the exhibit. The company uses EIGRP as the routing protocol. What path will packets take from a host on 192.168.10.192/26 network to a host on the LAN attached to router R1?

 

R3# show ip route

 

Gateway of last resort is not set

 

192 168.20.0/24 is variably subnetted, 6 subnets, 2 masks

 

D 192.168.20.64/26 [90/2195456] via 192.168.20.9, 00:03:31, Serial0/0

 

D 192.168.20.0/30 [90/2681856] via 192.168.20.9, 00:03:31, Serial0/0

 

C 192.168.20.4/30 is directly connected, Serial0/1

 

C 192.168.20.8/30 is directly connected, Serial0/0

 

C 192.168.20.192/26 is directly connected, FastEthernet0/0

 

D 192.168.20.128/26 [90/2195456] via 192.168.20.5,00:03:31, Serial0/1

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A.

The path of the packets will be R3 to R2 to R1

B.

The path of the packets will be R3 to R1 to R2

C.

The path of the packets will be both R3 to R2 to R1 and R3 to R1

D.

The path of the packets will be R3 to R1

 

Correct Answer: D

Explanation:

http://www.orbitco-ccna-pastquestions.com/CCNA—EIGRP-Common-Question.php

 

Looking at the output display above, the LAN attached to router R1 belongs to 192.168.20.64/26 subnet and learned this network via 192.168.20.9 which will be an IP address in 192.168.20.8/30 sub-network. This means that packets destined for 192.168.20.64 will be routed from R3 to R1.

 

 

QUESTION 57

Which statements are true a
bout EIGRP successor routes? (Choose two.)

 

A.

A successor route is used by EIGRP to forward traffic to a destination.

B.

Successor routes are saved in the topology table to be used if the primary route fails.

C.

Successor routes are flagged as ‘active’ in the routing table.

D.

A successor route may be backed up by a feasible successor route.

E.

Successor routes are stored in the neighbor table following the discovery process.

 

Correct Answer: AD

Explanation:

Introduction to EIGRP

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080093f07.shtml

 

Feasible Successors

A destination entry is moved from the topology table to the routing table when there is a feasible successor. All minimum cost paths to the destination form a set. From this set, the neighbors that have an advertised metric less than the current routing table metric are considered feasible successors.

Feasible successors are viewed by a router as neighbors that are downstream with respect to the destination.

These neighbors and the associated metrics are placed in the forwarding table. When a neighbor changes the metric it has been advertising or a topology change occurs in the network, the set of feasible successors may have to be re-evaluated. However, this is not categorized as a route recomputation.

 

 

QUESTION 58

Refer to the exhibit. Given the output for this command, if the router ID has not been manually set, what router ID will OSPF use for this router?

 

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A.

10.1.1.2

B.

10.154.154.1

C.

172.16.5.1

D.

192.168.5.3

 

Correct Answer: C

Explanation:

CCNA Tutorial: The OSPF Router ID (RID)

http://www.thebryantadvantage.com/CCNACertificationExamTutorialOSPFRouterIDRID.htm

 

When determining the Router ID (RID) of an OSPF-enabled router, OSPF will always use the numerically highest IP address on the router’s loopback interfaces, regardless of whether that loopback is OSPF-enabled.

 

What if there is no loopback?

OSPF will then use the numerically highest IP address of the physical interfaces, regardless of whether that interface is OSPF-enabled.

 

 

QUESTION 59

What can cause two OSPF neighbors to be stuck in the EXSTART state?

 

A.

There is a low bandwidth connection between neighbors.

B.

The neighbors have different MTU settings.

C.

The OSPF interfaces are in a passive state.

D.

There is only layer one connectivity between neighbors.

 

Correct Answer: B

Explanation:

Neighbors Stuck in Exstart/Exchange State

The problem occurs most frequently when attempting to run OSPF between a Cisco router and another vendor’s router. The problem occurs when the maximum transmission unit (MTU) settings for neighboring router interfaces don’t match. If the router with the higher MTU sends a packet larger that the MTU set on the neighboring router, the neighboring router ignores the packet.0 When this problem occurs, the output of the show ip ospf neighbor command displays output similar that shown below:

router-6# show ip ospf neighbor

 

Neighbor ID Pri State Dead Time Address Interface

170.170.11.7 1 EXCHANGE/ – 00:00:36 170.170.11.7 Serial2.7

router-6#

 

router-7# show ip ospf neighbor

 

Neighbor ID Pri State Dead Time Address Interface

170.170.11.6 1 EXSTART/ – 00:00:33 170.170.11.6 Serial0.6

 

Reference: http://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13684-12.html

 

 

QUESTION 60

Refer to the exhibit. Assume that all of the router interfaces are operational and configured correctly. How will router R2 be affected by the configuration of R1 that is shown in the exhibit?

 

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A.

Router R2 will not form a neighbor relationship with R1.

B.

Router R2 will obtain a full routing table, including a default route, from R1.

C.

R2 will obtain OSPF updates from R1, but will not obtain a default route from R1.

D.

R2 will not have a route for the directly connected serial network, but all other directly connected networks will be present, as well as the two Ethernet networks connected to R1.

 

Correct Answer: A

Explanation:

Open Shortest Path First

http://en.wikipedia.org/wiki/Open_Shortest_Path_First

 

The configuration of R1 shows “router ospf 1” however, the diagram also shows that both routers should be in the backbone OSPF Area of “0”. When routers are in different OSPF areas they will not form a neighbor relationship.

Neighbor relationships

As a link state routing protocol, OSPF establishes and maintains neighbor relationships in order to exchange routing updates with other routers. The neighbor relationship table is called an adjacency database in OSPF.

Provided that OSPF is configured correctly, OSPF forms neighbor relationships only with the routers directly connected to it. In order to form a neighbor relationship between two routers, the interfaces used to form the relationship must be in the same area. Generally an interface is only configured in a single area, however you can configure an interface to belong to multiple areas. In the second area, such an interface must be configured as a secondary interface. (A neighbor state simulation shows how neighbor state changes from Down to Full Adjacency progressively with exchanging Hello, DD, Request, Update, and Ack packets).

 

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