Cisco 200-120 Online Practice Questions and Exam Preparation

Cisco 200-120 Online Questions & Answers

• Question 111:

  Refer to the exhibit.

  

  What set of commands was configured on interface Fa0/3 to produce the given output?

  A. interface FastEthernet 0/3 channel-group 1 mode desirable switchport trunk encapsulation dot1q switchport mode trunk
  B. interface FastEthernet 0/3 channel-group 2 mode passive switchport trunk encapsulation dot1q switchport mode trunk
  C. interface FastEthernet 0/3 channel-group 2 mode active switchport trunk encapsulation dot1q switchport mode trunk
  D. interface FastEthernet 0/3 channel-group 2 mode on switchport trunk encapsulation dot1q switchport mode trunk
  B. interface FastEthernet 0/3 channel-group 2 mode passive switchport trunk encapsulation dot1q switchport mode trunk

  ---

  Based on the output shown, the configured channel group number was 2 and the mode used was passive, so only choice B is correct.

• Question 112:

  Which technology can enable multiple VLANs to communicate with one another?

  A. inter-VLAN routing using a Layer 3 switch
  B. inter-VLAN routing using a Layer 2 switch
  C. intra-VLAN routing using router on a stick
  D. intra-VLAN routing using a Layer 3 switch
  A. inter-VLAN routing using a Layer 3 switch

• Question 113:

  Which two of these are characteristics of the 802.1Q protocol? (Choose two.)

  A. It is used exclusively for tagging VLAN frames and does not address network reconvergence following switched network topology changes.
  B. It modifies the 802.3 frame header, and thus requires that the FCS be recomputed.
  C. It is a Layer 2 messaging protocol which maintains VLAN configurations across networks.
  D. It includes an 8-bit field which specifies the priority of a frame.
  E. It is a trunking protocol capable of carrying untagged frames.
  B. It modifies the 802.3 frame header, and thus requires that the FCS be recomputed.
  E. It is a trunking protocol capable of carrying untagged frames.

  ---

  802.1Q protocol, or Virtual Bridged Local Area Networks protocol, mainly stipulates the realization of the VLAN. 802.1Q is a standardized relay method that inserts 4 bytes field into the original Ethernet frame and re-calculate the FCS. 802.1Q frame relay supports two types of frame: marked and non-marked. Non-marked frame carries no VLAN identification information.

• Question 114:

  Which two of these statements regarding RSTP are correct? (Choose two.)

  A. RSTP cannot operate with PVST+.
  B. RSTP defines new port roles.
  C. RSTP defines no new port states.
  D. RSTP is a proprietary implementation of IEEE 802.1D STP.
  E. RSTP is compatible with the original IEEE 802.1D STP.
  B. RSTP defines new port roles.
  E. RSTP is compatible with the original IEEE 802.1D STP.

  ---

  When network topology changes, rapid spanning tree protocol (IEEE802.1W, referred to as RSTP) will speed up significantly the speed to re-calculate spanning tree. RSTP not only defines the role of other ports: alternative port and backup port, but also defines status of 3 ports: discarding status, learning status, forwarding status.

  RSTP is 802.1D standard evolution, not revolution. It retains most of the parameters, and makes no changes.

• Question 115:

  What command sequence will configure a router to run OSPF and add network 10.1.1.0 /24 to area 0?

  A. router ospf area 0 network 10.1.1.0 255.255.255.0 area 0
  B. router ospf network 10.1.1.0 0.0.0.255
  C. router ospf 1 network 10.1.1.0 0.0.0.255 area 0
  D. router ospf area 0 network 10.1.1.0 0.0.0.255 area 0
  E. router ospf network 10.1.1.0 255.255.255.0 area 0
  F. router ospf 1 network 10.1.1.0 0.0.0.255
  C. router ospf 1 network 10.1.1.0 0.0.0.255 area 0

  ---

  Enabling OSPF SUMMARY STEPS

  1.

  enable

  2.

  configure terminal

  3.

  router ospf process-id

  4.

  network ip-address wildcard-mask area area-id

  5.

  end DETAILED STEPS

  

  Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/12-4t/iro-12-4t-book/iro-cfg.html#GUID-588D1301-F63C-4DAC-BF1C-C3735EB13673

• Question 116:

  The network administrator has been asked to give reasons for moving from IPv4 to IPv6. What are two valid reasons for adopting IPv6 over IPv4? (Choose two.)

  A. no broadcast
  B. change of source address in the IPv6 header
  C. change of destination address in the IPv6 header
  D. Telnet access does not require a password
  E. autoconfiguration
  F. NAT
  A. no broadcast
  E. autoconfiguration

  ---

  IPv6 does not use broadcasts, and autoconfiguration is a feature of IPV6 that allows for hosts to automatically obtain an IPv6 address.

• Question 117:

  Which type of address is the public IP address of a NAT device?

  A. outside global
  B. outside local
  C. inside global
  D. inside local
  E. outside public
  F. inside public
  C. inside global

• Question 118:

  A network administrator is troubleshooting an EIGRP problem on a router and needs to confirm the IP addresses of the devices with which the router has established adjacency. The retransmit interval and the queue counts for the adjacent routers also need to be checked. What command will display the required information?

  A. Router# show ip eigrp adjacency
  B. Router# show ip eigrp topology
  C. Router# show ip eigrp interfaces
  D. Router# show ip eigrp neighbors
  D. Router# show ip eigrp neighbors

  ---

  Below is an example of the show ip eigrp neighbors command. The retransmit interval (Smooth Round Trip Timer ?SRTT) and the queue counts (Q count, which shows the number of queued EIGRP packets) for the adjacent routers are listed:

  

• Question 119:

  What are two enhancements that OSPFv3 supports over OSPFv2? (Choose two.)

  A. It requires the use of ARP.
  B. It can support multiple IPv6 subnets on a single link.
  C. It supports up to 2 instances of OSPFv3 over a common link.
  D. It routes over links rather than over networks.
  B. It can support multiple IPv6 subnets on a single link.
  D. It routes over links rather than over networks.

• Question 120:

  A network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement, what is known about the network interface port?

  A. This is a 10 Mb/s switch port.
  B. This is a 100 Mb/s switch port.
  C. This is an Ethernet port operating at half duplex.
  D. This is an Ethernet port operating at full duplex.
  E. This is a port on a network interface card in a PC.
  C. This is an Ethernet port operating at half duplex.

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  Modern Ethernet networks built with switches and full-duplex connections no longer utilize CSMA/CD. CSMA/CD is only used in obsolete shared media Ethernet (which uses repeater or hub).