[2021-New] Cisco 200-105 Dumps With Update Exam Questions (41-50)

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Q1. - (Topic 2)

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.

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

Q2. - (Topic 2)

A router receives information about network 192.168.10.0/24 from multiple sources. What will the router consider the most reliable information about the path to that network?

A. an OSPF update for network 192.168.0.0/16

B. a static route to network 192.168.10.0/24

C. a static route to network 192.168.10.0/24 with a local serial interface configured as the next hop

D. a RIP update for network 192.168.10.0/24

E. a directly connected interface with an address of 192.168.10.254/24

F. a default route with a next hop address of 192.168.10.1

Answer: E

Explanation:

What Is Administrative Distance? http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094195.shtml

Select the Best Path Administrative distance is the first criterion that a router uses to determine which routing protocol to use if two protocols provide route information for the same destination. Administrative distance is a measure of the trustworthiness of the source of the routing information. Administrative distance has only local significance, and is not advertised in routing updates. Note: The smaller the administrative distance value, the more reliable the protocol. For example, if a router receives a route to a certain network from both Open Shortest Path First (OSPF) (default administrative distance - 110) and Interior Gateway Routing Protocol (IGRP) (default administrative distance - 100), the router chooses IGRP because IGRP is more reliable. This means the router adds the IGRP version of the route to the routing table.

Q3. - (Topic 2)

What can be done to secure the virtual terminal interfaces on a router? (Choose two.)

A. Administratively shut down the interface.

B. Physically secure the interface.

C. Create an access list and apply it to the virtual terminal interfaces with the access-group command.

D. Configure a virtual terminal password and login process.

E. Enter an access list and apply it to the virtual terminal interfaces using the access-class command.

Answer: D,E

Explanation:

It is a waste to administratively shut down the interface. Moreover, someone can still access the virtual terminal interfaces via other interfaces -> A is not correct.

We can not physically secure a virtual interface because it is “virtual” -> B is not correct.

To apply an access list to a virtual terminal interface we must use the “access-class” command. The “access-group” command is only used to apply an access list to a physical interface -> C is not correct; E is correct.

The most simple way to secure the virtual terminal interface is to configure a username & password to prevent unauthorized login -> D is correct.

Q4. - (Topic 2)

Which two statements describe the process identifier that is used in the command to configure OSPF on a router? (Choose two.)

Router(config)# router ospf 1

A. All OSPF routers in an area must have the same process ID.

B. Only one process number can be used on the same router.

C. Different process identifiers can be used to run multiple OSPF processes

D. The process number can be any number from 1 to 65,535.

E. Hello packets are sent to each neighbor to determine the processor identifier.

Answer: C,D

Explanation:

The areas can be any number from 0 to 4.2 billion and 1 to 65,535 for the Process ID. The process ID is the ID of the OSPF process to which the interface belongs. The process ID is local to the router, and two OSPF neighboring routers can have different OSPF process IDs. (This is not true of Enhanced Interior Gateway Routing Protocol [EIGRP], in which the routers need to be in the same autonomous system). Cisco IOS Software can run multiple OSPF processes on the same router, and the process ID merely distinguishes one process from the other. The process ID should be a positive integer.

Q5. - (Topic 3)

What can be done to Frame Relay to resolve split-horizon issues?(Choose two.)

A. Disable Inverse ARP.

B. Create a full-mesh topology.

C. Develop multipoint subinterfaces.

D. Configure point-to-point subinterfaces.

E. Remove the broadcast keyword from the frame-relay map command.

Answer: B,D

Explanation:

IP split horizon checking is disabled by default for Frame Relay encapsulation to allow routing updates to go in and out of the same interface. An exception is the Enhanced Interior Gateway Routing Protocol (EIGRP) for which split horizon must be explicitly disabled. Certain protocols such as AppleTalk, transparent bridging, and Internetwork Packet Exchange (IPX) cannot be supported on partially meshed networks because they require split horizon to be enabled (a packet received on an interface cannot be transmitted over the same interface, even if the packet is received and transmitted on different virtual circuits). Configuring Frame Relay subinterfaces ensures that a single physical interface is treated as multiple virtual interfaces. This capability allows you to overcome split horizon rules so packets received on one virtual interface can be forwarded to another virtual interface, even if they are configured on the same physical interface.

Q6. - (Topic 2)

Which parameter would you tune to affect the selection of a static route as a backup, when a dynamic protocol is also being used?

A. hop count

B. administrative distance

C. link bandwidth

D. link delay

E. link cost

Answer: B

Explanation:

What Is Administrative Distance?

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094195.shtml

Administrative distance is the feature that routers use in order to select the best path. Administrative distance defines the reliability of a routing protocol. Each routing protocol is prioritized in order of most to least reliable (believable) with the help of an administrative distance value. Lowest Administrative distance will be chosen first.

Q7. - (Topic 3)

In the Frame Relay network,

which IP addresses would be assigned to the interfaces with point-to-point PVCs?

A. DLCI 16 192.168.10.1/24 DLCI 17 192.168.10.1/24 DLCI 99 192.168.10.2/24 DLCI 28 192.168.10.3/24

B. DLCI 16 192.168.10.1 /24 DLCI 17 192.168.11.1/24 DLCI 99 192.168.12.1/24 DLCI 28 192.168.13.1/24

C. DLCI 16 192.168.10.1/24 DLCI 17 192.168.11.1/24 DLCI 99 192.168.10.2/24 DLCI 28 192.168.11.2/24

D. DLCI 16 192.168.10.1/24 DLCI 17 192.168.10.2/24 DLCI 99 192.168.10.3/24 DLCI 28 192.168.10.4/24

Answer: C

Explanation:

DLCI 16 and DLCI 19 need to act like a point-to-point link and will therefore need to be on the same network as will DLCI 17 and DLCI 28. With this information we can see that option "B" is the only option that has the corresponding DLCI's on the same network based on the ip addresses and subnetmask. Option "D" is incorrect because, this would put the same network on both interfaces of the R2 router. Option "A" is similar.

Q8. - (Topic 1)

What are two characteristics of a switch that is configured as a VTP client? (Choose two.)

A. If a switch that is configured to operate in client mode cannot access a VTP server, then the switch reverts to transparent mode.

B. On switches that are configured to operate in client mode, VLANs can be created, deleted, or renamed locally.

C. The local VLAN configuration is updated only when an update that has a higher configuration revision number is received.

D. VTP advertisements are not forwarded to neighboring switches that are configured in VTP transparent mode.

E. VTP client is the default VTP mode.

F. When switches in VTP client mode are rebooted, they send a VTP advertisement request to the VTP servers.

Answer: C,F

Explanation:

VLAN Trunking Protocol (VTP) http://archive.networknewz.com/2004/0317.html

VTP Modes Server Mode Once VTP is configured on a Cisco switch, the default mode used is Server Mode. In any given VTP management domain, at least one switch must be in Server Mode. When in Server Mode, a switch can be used to add, delete, and modify VLANs, and this information will be passed to all other switches in the VTP management domain. Client Mode When a switch is configured to use VTP Client Mode, it is simply the recipient of any VLANs added, deleted, or modified by a switch in Server Mode within the same management domain. A switch in VTP client mode cannot make any changes to VLAN information. Transparent Mode A switch in VTP Transparent Mode will pass VTP updates received by switches in Server Mode to other switches in the VTP management domain, but will not actually process the contents of these messages. When individual VLANs are added, deleted, or modified on a switch running in transparent mode, the changes are local to that particular switch only, and are not passed to other switches in the VTP management domain.

Q9. - (Topic 2)

Which statement is true, as relates to classful or classless routing?

A. Classful routing protocols send the subnet mask in routing updates.

B. RIPv1 and OSPF are classless routing protocols.

C. Automatic summarization at classful boundaries can cause problems on discontiguous subnets.

D. EIGRP and OSPF are classful routing protocols and summarize routes by default.

Answer: C

Explanation: http://www.ciscopress.com/articles/article.asp?p=174107&seqNum=3

RIPv1, RIPv2, IGRP, and EIGRP all auto-summarize classful boundaries by default (OSPF does not).To make discontiguous networks work, meaning you don't want classful boundries to summarize, you need to turn off auto-summary.

Q10. - (Topic 3)

Which two statistics appear in show frame-relay map output? (Choose two.)

A. the number of BECN packets that are received by the router

B. the value of the local DLCI

C. the number of FECN packets that are received by the router

D. the status of the PVC that is configured on the router

E. the IP address of the local router

Answer: B,D

Explanation:

Frame Relay Commands (map-class frame-relay through threshold ecn)

http://www.cisco.com/en/US/docs/ios/12_2/wan/command/reference/wrffr4.html#wp102934

Examples

The following is sample output from the show frame-relay map command:

Router#show frame-relay map Serial 1 (administratively down): ip 10.108.177.177

dlci 177 (0xB1,0x2C10), static, broadcast,

CISCO

TCP/IP Header Compression (inherited), passive (inherited)