Cisco 200-105 Online Practice Questions and Exam Preparation

Cisco 200-105 Online Questions & Answers

• Question 391:

  Which type of topology is required by DMVPN?

  A. ring
  B. full mesh
  C. hub-and-spoke
  D. partial mesh
  C. hub-and-spoke

• Question 392:

  Which functionality does an SVI provide?

  A. OSI Layer 2 connectivity to switches
  B. remote switch administration
  C. traffic routing for VLANs
  D. OSI Layer 3 connectivity to switches
  C. traffic routing for VLANs

• Question 393:

  Which port state is introduced by Rapid-PVST?

  A. learning
  B. listening
  C. discarding
  D. forwarding
  C. discarding

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  Spanning Tree from PVST+ to Rapid-PVST Migration Configuration Example PVST+ is based on IEEE802.1D Spanning Tree Protocol (STP). But PVST+ has only 3 port states (discarding, learning and forwarding) while STP has 5 port states (blocking, listening, learning, forwarding and disabled). So discarding is a new port state in PVST+.

  

  Background Information 802.1D Spanning Tree Protocol (STP) has a drawback of slow convergence. Cisco Catalyst switches support three types of STPs, which are PVST+, rapid-PVST+ and MST. PVST+ is based on IEEE802.1D standard and includes Cisco proprietary extensions such as BackboneFast, UplinkFast, and PortFast. Rapid-PVST+ is based on IEEE 802.1w standard and has a faster convergence than 802.1D. RSTP (IEEE 802.1w) natively includes most of the Cisco proprietary

  enhancements to the 802.1D Spanning Tree, such as BackboneFast and UplinkFast.

  Rapid-PVST+ has these unique features:

  Uses Bridge Protocol Data Unit (BPDU) version 2 which is backward compatible with the 802.1D STP, which uses BPDU version 0.

  All the switches generate BPDUs and send out on all the ports every 2 seconds, whereas in 802.1D STP only the root bridge sends the configuration BPDUs.

  Port Roles--Root port, designated port, alternate port and backup port.

  Port States--Discarding, Learning, and Forwarding.

  Port Types--Edge Port (PortFast), Point-to-Point and Shared port.

  Rapid-PVST uses RSTP to provide faster convergence. When any RSTP port receives legacy 802.1D BPDU, it falls back to legacy STP and the inherent fast convergence benefits of 802.1w are lost when it interacts with legacy bridges.

  Reference:

  http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_example09186a00807b0670.shtml

  http://www.cisco.com/en/US/tech/tk389/tk621/technologies_white_paper09186a0080094cfa.shtml

• Question 394:

  Which two statements about interior gateway routing protocols are true? (Choose two.)

  A. They may use the Dijkstra algorithm.
  B. They can be used to connect to another AS across the Internet as a virtual instance.
  C. They may use the Bellman-Ford algorithm.
  D. They cannot be used when two devices are connected through a firewall.
  E. They can be used to connect to the Internet backbone.
  A. They may use the Dijkstra algorithm.
  C. They may use the Bellman-Ford algorithm.

• Question 395:

  Which two statements about the OSPF Router ID are true? (Choose two.)

  A. It identifies the source of a Type 1 LSA.
  B. It should be the same on all routers in an OSPF routing instance.
  C. By default, the lowest IP address on the router becomes the OSPF Router ID.
  D. The router automatically chooses the IP address of a loopback as the OSPF Router ID.
  E. It is created using the MAC Address of the loopback interface.
  A. It identifies the source of a Type 1 LSA.
  D. The router automatically chooses the IP address of a loopback as the OSPF Router ID.

  ---

  From the output of the "show ip ospf database": r120#show ip ospf data OSPF Router with ID (10.0.0.120) (Process ID1)

  Next, who are the other routers in our area?

  Router Link States (Area 1)

  Link ID ADV Router Age Seq# Checksum Link count

  10.0.0.111 10.0.0.111 600 0x8000023A 0x0092B3 1

  10.0.0.112 10.0.0.112 1246 0x80000234 0x009CAC 1

  10.0.0.113 10.0.0.113 148 0x8000022C 0x004399 3

  10.0.0.120 10.0.0.120 152 0x80000240 0x0046CB 1

  This tells us there are four routers in Area 1. The router with RID 10.0.0.113 has 3 links in Area 1, everyone else has only 1 link. Also the router will choose the highest loopback interface as its OSPF router ID (if available).

• Question 396:

  When is the most appropriate time to escalate an issue that you are troubleshooting?

  A. when you lack proper resources to resolve the issue
  B. when you have gathered all available information about the issue
  C. when you have been unable to resolve the issue after 30 minutes
  D. when a more urgent issue that requires your intervention is detected
  B. when you have gathered all available information about the issue

• Question 397:

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

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  What Is Administrative Distance? 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.

  

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

• Question 398:

  Which two values are needed to run the APIC-EM ACL Analysis tool? (Choose two.)

  A. destination port
  B. source address
  C. protocol
  D. source port
  E. periodic refresh interval
  F. destination address
  D. source port
  F. destination address

• Question 399:

  Which statement about QoS default behavior is true?

  A. Ports are untrusted by default.
  B. VoIP traffic is passed without being tagged.
  C. Video traffic is passed with a well-known DSCP value of 46.
  D. Packets are classified internally with an environment.
  E. Packets that arrive with a tag are untagged at the edge of an administrative domain.
  A. Ports are untrusted by default.

  ---

  Trust means to accept as valid and use as the basis of the initial internal DSCP value. Ports are untrusted by default, which sets the initial internal DSCP value to zero.

  Reference: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/configuration/guide/book/qos.html

• Question 400:

  Which command can you enter to display the default VLAN?

  A. show interface brief
  B. show run
  C. show ip interface brief
  D. show interface f0/2 switchport
  D. show interface f0/2 switchport