Cisco 200-105 Online Practice Questions and Exam Preparation

Cisco 200-105 Online Questions & Answers

• Question 41:

  Scenario:

  You work as Junior Network Engineer for RADO Network Ltd company. Your colleague has set up a Layer 2 network for testing purpose in one of your client locations. You must verify the configuration and fix if any issues identified as per customer requirements.

  Topology Details

  -

  Three switches (SVV1. SW2, and SW3) are connected using Ethernet link as shown in the topology diagram.

  -

  Server1 and PC1 are connected to SW1 and are assigned to VLAN 500 and VLAN 600 respectively.

  -

  Server2 and PC2 are connected to SW2 and are assigned to VLAN 500 and VLAN 600 respectively.

  -PC3 is connected to SW3 and assigned to VLAN 600.

  Customer requirements

  -

  Verify if switch ports are assigned in correct VLANs as per topology diagram Identify and fix any misconfigurations found in three switches.

  -

  Verify if trunk links are operational between switches and the IEEE 802.1 q trunk encapsulation method is used Identrfy and fix if any misconfigurations are found in the trunk configuration

  -

  You must make sure the ports connected between switches are set as trunk ports. Special Note: To gain the maximum number you must make sure that VLANs are assigned to switch ports as per customer requirements and make sure the trunk links are operational between switches Do not change VLAN names and VLAN number that are already configured in the switches

  

  Correct Answer. Check the answer below
  Check the answer below

  ---

  switch 1 port e0/1 was connected to a computer with a straight through cable and as well as rollover cable (for configuration of switch ports on this switch) which was shown in vlan 600 in the diagram but actually that pc was not in vlan 600 after checking the vlan configuration using show vlan command. instead this port was configured in vlan 1. so we needed to put that pc in van 600 using following commands:

  sw1(config)# interface e0/0sw1(configif)#switchport mode accesssw1(config-if)#switchport access vlan 600

  now the e0/0-port of this switch-sw1 was receiving native vlan mismatch from sw3 switch-port e0/1. also e0/0 of sw1 and e0/1 of sw3 were not in trunking mode. and the question was asked to make sure that connection between both switches should be in trunking mode with 802.1q encapsulation enabled so used the below commands:

  sw1(config)#int e0/0sw1(config-if)#switchport trunk encapsulationdot1qsw1(config-if)# switchport mode trunk.on other switch which is switch3 sw3(config)#int e0/0sw3(config-if)#switchport trunk encapsulationdot1qsw3(config-if)# switchport mode trunk.sw3(config-if)#

  switchport trunk native vlan 1 also port e0/2 of sw3 was connected to server and in vlan 600 and port e0/3 was assigned to vlan 500 and to a computer again in vlan 500 itself. so that computer had a console cable connected to sw3 as well in order to configure sw3 ports as trunk ports and switchports using the above steps for sw1 which was mentioned above.

  similarly sw2 port e0/1 port was connected to e0/4 port of sw3 so again trunk link configurations between e0/1 and e0/4 ports between two switches need to eb done here. but you nedd not to again run that native vlan command change on sw3 or sw2 since on sw3 we akready changed in above step and in sw2 its fine in vlan 1 only.

  a computer was connected to port e0/2 of sw2 and was in vlan 600 and e0/3 was connected tio server whch was in vlan 600 again. also again this time the computer was connected to the switch using a console cable aswell to give you console access to configure and verify the configurations on sw2. so just verify the access ports are correctly assigned and trunk ports as well using below commands.

• Question 42:

  What can you change to select switch as root bridge?

  A. make lower priority
  B. make higher priority
  C. make lower path cost
  D. make higher path cost
  A. make lower priority

• Question 43:

  Which command should you enter to allow carrying voice?

  A. switchport
  B. switchport access
  C. switchport trunk
  D. switchport host
  B. switchport access

• Question 44:

  What is the default administrative distance of the OSPF routing protocol?

  A. 90
  B. 100
  C. 110
  D. 120
  E. 130
  F. 170
  C. 110

• Question 45:

  It has become necessary to configure an existing serial interface to accept a second Frame Relay virtual circuit.

  Which of the following are required to solve this? (Choose three)

  A. configure static frame relay map entries for each subinterface network.
  B. remove the ip address from the physical interface
  C. create the virtual interfaces with the interface command
  D. configure each subinterface with its own IP address
  E. disable split horizon to prevent routing loops between the subinterface networks
  F. encapsulate the physical interface with multipoint PPP
  B. remove the ip address from the physical interface
  C. create the virtual interfaces with the interface command
  D. configure each subinterface with its own IP address

  ---

  Step to configure Frame Relay subinterfaces on a physical interface:

  1.

  Remove any network layer address (IP) assigned to the physical interface. If the physical interface has an address, frames are not received by the local subinterfaces.

  2.

  Configure Frame Relay encapsulation on the physical interface using the encapsulation frame-relay command.

  3.

  For each of the defined PVCs, create a logical subinterface. Specify the port number, followed by a period (.) and the subinterface number. To make troubleshooting easier, it is suggested that the subinterface number matches the DLCI number.

  4.

  Configure an IP address for the interface and set the bandwidth.

  5.

  Configure the local DLCI on the subinterface using the frame-relay interface-dlci command. Configuration Example:

  

  Reference: http://www.orbit-computer-solutions.com/How-To-Configure-Frame-Relay-Subinterfaces.php

• Question 46:

  Which pairing reflects a correct protocol-and-metric relationship?

  A. EIGRP and link cost
  B. OSPF and number of hops and reliability
  C. RIPv2 and number of hops
  D. IS-IS and delay and reliability
  C. RIPv2 and number of hops

• Question 47:

  What are three characteristics of the OSPF routing protocol? (Choose three.)

  A. It converges quickly.
  B. OSPF is a classful routing protocol.
  C. It uses cost to determine the best route.
  D. It uses the DUAL algorithm to determine the best route.
  E. OSPF routers send the complete routing table to all directly attached routers.
  F. OSPF routers discover neighbors before exchanging routing information.
  A. It converges quickly.
  C. It uses cost to determine the best route.
  F. OSPF routers discover neighbors before exchanging routing information.

  ---

  Open Shortest Path First Additional OSPF features include equal-cost, multipath routing, and routing based on upper-layer type-of-service (TOS) requests. TOS-based routing supports those upper-layer protocols that can specify particular types of service. An application, for example, might specify that certain data is urgent. If OSPF has high-priority links at its disposal, these can be used to transport the urgent datagram. OSPF supports one or more metrics. If only one metric is used, it is considered to be arbitrary, and TOS is not supported. If more than one metric is used, TOS is optionally supported through the use of a separate metric (and, therefore, a separate routing table) for each of the eight combinations created by the three IP TOS bits (the delay, throughput, and reliability bits). For example, if the IP TOS bits specify low delay, low throughput, and high reliability, OSPF calculates routes to all destinations based on this TOS designation. IP subnet masks are included with each advertised destination, enabling variable- length subnet masks. With variable-length subnet masks, an IP network can be broken into many subnets of various sizes. This provides network administrators with extra network-configuration flexibility.

  Reference: http://docwiki.cisco.com/wiki/Open_Shortest_Path_First

• Question 48:

  Which command do you enter so that a port enters the forwarding state immediately when a PC is connected to it?

  A. Switch(config)# spanning-tree portfast bpduguard default
  B. Switch(config)# spanning-tree portfast default
  C. Switch(config-if)# spanning-tree portfast trunk
  D. Switch(config-if)#no spanning-tree portfast
  D. Switch(config-if)#no spanning-tree portfast

• Question 49:

  Which two circumstances can cause collision domain issues on VLAN domain? (Choose two.)

  A. duplex mismatches on Ethernet segments in the same VLAN
  B. multiple errors on switchport interfaces
  C. congestion on the switch inband path
  D. a failing NIC in an end device
  E. an overloaded shared segment
  A. duplex mismatches on Ethernet segments in the same VLAN
  C. congestion on the switch inband path

  ---

  Collision Domains A collision domain is an area of a single LAN where end stations contend for access to the network because all end stations are connected to a shared physical medium. If two connected devices transmit onto the media at the same time, a collision occurs. When a collision occurs, a JAM signal is sent on the network, indicating that a collision has occurred and that devices should ignore any fragmented data associated with the collision. Both sending devices back off sending their data for a random amount and then try again if the medium is free for transmission.

  Therefore, collisions effectively delay transmission of data, lowering the effective throughput available to a device. The more devices that are attached to a collision domain, the greater the chances of collisions; this results in lower bandwidth and performance for each device attached to the collision domain. Bridges and switches terminate the physical signal path of a collision domain, allowing you to segment separate collision domains, breaking them up into multiple smaller pieces to provide more bandwidth per user within the new collision domains formed.

• Question 50:

  Two hosts are attached to a switch with the default configuration. Which statement about the configuration is true?

  A. IP routing must be enabled to allow the two hosts to communicate.
  B. The two hosts are in the same broadcast domain.
  C. The switch must be configured with a VLAN to allow the two hosts to communicate
  D. Port security prevents the hosts from connecting to the switch.
  B. The two hosts are in the same broadcast domain.