Cisco 200-105 Online Practice Questions and Exam Preparation

Cisco 200-105 Online Questions & Answers

• Question 661:

  While troubleshooting the failure of an OSPFv3 Ethernet connection between routers R1 and R2, you determine that the hello timers are mismatched and that R2 is configured with default settings.

  Which command do you enter on R1 to correct the problem?

  A. R1(config-if)#ipv6 ospf hello-interval 20
  B. R1(config-if)#ip ospf hello-interval 10
  C. R1(config-if)#ip ospf hello-interval 20
  D. R1(config-if)#no ipv6 ospf hello-interval
  B. R1(config-if)#ip ospf hello-interval 10

  ---

  Reference: https://www.cisco.com/c/en/us/td/docs/security/asa/asa92/configuration/general/asa-general-cli/route-ospf.pdf page 30-24

• Question 662:

  Which statement describes the process ID that is used to run OSPF on a router?

  A. It is globally significant and is used to represent the AS number.
  B. It is locally significant and is used to identify an instance of the OSPF database.
  C. It is globally significant and is used to identify OSPF stub areas.
  D. It is locally significant and must be the same throughout an area.
  B. It is locally significant and is used to identify an instance of the OSPF database.

  ---

  The Process ID for OSPF on a router is only locally significant and you can use the same number on each router, or each router can have a different number -it just doesn't matter. The numbers you can use are from 1 to 65,535. Don't get this confused with area numbers, which can be from 0 to 4.2 billion.

• Question 663:

  Which two functions of an SDN controller are true? (Choose two.)

  A. managing the topology
  B. protection against DDoS attacks
  C. coordinating VTNs
  D. tracking hosts
  E. Layer 2 forwarding
  A. managing the topology
  C. coordinating VTNs

• Question 664:

  Which three statements are typical characteristics of VLAN arrangements? (Choose three.)

  A. VLANs cannot span multiple switches.
  B. VLANs typically decrease the number of collision domains.
  C. Connectivity between VLANs requires a Layer 3 device.
  D. Each VLAN uses a separate address space.
  E. A new switch has no VLANs configured.
  F. A switch maintains a separate bridging table for each VLAN.
  C. Connectivity between VLANs requires a Layer 3 device.
  D. Each VLAN uses a separate address space.
  F. A switch maintains a separate bridging table for each VLAN.

  ---

  By default, all ports on a new switch belong to VLAN 1 (default and native VLAN). There are also some well-known VLANs (for example: VLAN 1002 for fddi-default; VLAN 1003 for token-ring...) configured by default -> A is not correct.

  To communicate between two different VLANs we need to use a Layer 3 device like router or Layer3 switch.

  VLANs don't affect the number of collision domains, they are the same

  Typically, VLANs increase the number of broadcast domains. We must use a different network (orsub-network) for each VLAN. For example, we can use 192.168.1.0/24 for VLAN 1, 192.168.2.0/24 for VLAN 2 A switch maintains a separate

  bridging table for each VLAN so that it can send frame to ports on

  the same VLAN only. For example, if a PC in VLAN 2 sends a frame then the switch look-ups its

  bridging table and only sends frame out of its ports which belong to VLAN 2 (it also sends this frame on trunk ports)

  We can use multiple switches to expand VLAN.

• Question 665:

  At which layer of the OSI model is RSTP used to prevent loops?

  A. physical
  B. data link
  C. network
  D. transport
  B. data link

  ---

  RSTP and STP operate on switches and are based on the exchange of Bridge Protocol Data Units (BPDUs) between switches. One of the most important fields in BPDUs is the Bridge Priority in which the MAC address is used to elect the Root Bridge, RSTP operates at Layer 2.

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

• Question 666:

  Refer to the exhibit. Why has this switch not been elected the root bridge for VLAN1?

  

  A. It has more than one interface that is connected to the root network segment.
  B. It is running RSTP while the elected root bridge is running 802.1d spanning tree.
  C. It has a higher MAC address than the elected root bridge.
  D. It has a higher bridge ID than the elected root bridge.
  D. It has a higher bridge ID than the elected root bridge.

  ---

  When a switch receives a BPDU, it first com pares priority, the lower number wins. If a tie, compare MAC, the smaller one wins. Here Switch has 32769 priorities which is greater than 20481 so switch will not elect for root bridge. It says the bridge priority for Switch is 32769, and the root priority is 20481. Which means that some other switch has the lower priority and won the election for VLAN 1.

  Reference: http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a008009482f.s.html

• Question 667:

  Which WAN topology is most appropriate for a centrally located server farm with several satellite branches?

  A. star
  B. hub and spoke
  C. point-to-point
  D. full mesh
  B. hub and spoke

• Question 668:

  

  Refer to the exhibit. Which type of port generated this output?

  A. Layer 3 port
  B. trunk port
  C. access port
  D. private VLAN port
  B. trunk port

• Question 669:

  Which type does a port become when it receives the best BPDU on a bridge?

  A. the backup port
  B. the root port
  C. the designated port
  D. the alternate port
  B. the root port

• Question 670:

  Which three are characteristics of an IPv6 anycast address? (Choose three.)

  A. one-to-many communication model
  B. one-to-nearest communication model
  C. any-to-many communication model
  D. a unique IPv6 address for each device in the group
  E. the same address for multiple devices in the group
  F. delivery of packets to the group interface that is closest to the sending device
  B. one-to-nearest communication model
  E. the same address for multiple devices in the group
  F. delivery of packets to the group interface that is closest to the sending device