Cisco 200-120 Online Practice Questions and Exam Preparation

Cisco 200-120 Online Questions & Answers

• Question 51:

  A receiving host computes the checksum on a frame and determines that the frame is damaged. The frame is then discarded. At which OSI layer did this happen?

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

  ---

  The Data Link layer provides the physical transmission of the data and handles error notification, network topology, and flow control. The Data Link layer formats the message into pieces, each called a data frame, and adds a customized header containing the hardware destination and source address. Protocols Data Unit (PDU) on Datalink layer is called frame. According to this question the frame is damaged and discarded which will happen at the Data Link layer.

• Question 52:

  Refer to the exhibit.

  

  A network associate has configured OSPF with the command:

  City(config-router)# network 192.168.12.64 0.0.0.63 area 0

  After completing the configuration, the associate discovers that not all the interfaces are participating in OSPF. Which three of the interfaces shown in the exhibit will participate in OSPF according to this configuration statement? (Choose three.)

  A. FastEthernet0 /0
  B. FastEthernet0 /1
  C. Serial0/0
  D. Serial0/1.102
  E. Serial0/1.103
  F. Serial0/1.104
  B. FastEthernet0 /1
  C. Serial0/0
  D. Serial0/1.102

  ---

  The "network 192.168.12.64 0.0.0.63 equals to network 192.168.12.64/26. This network has:

  +

  Increment: 64 (/26= 1111 1111.1111 1111.1111 1111.1100 0000)

  +

  Network address: 192.168.12.64

  +

  Broadcast address: 192.168.12.127

  Therefore all interfaces in the range of this network will join OSPF.

• Question 53:

  Which two locations can be configured as a source for the IOS image in the boot system command? (Choose two.)

  A. RAM
  B. NVRAM
  C. flash memory
  D. HTTP server
  E. TFTP server
  F. Telnet server
  C. flash memory
  E. TFTP server

  ---

  The following locations can be configured as a source for the IOS image:

  1.

  + Flash (the default location)

  2.

  + TFTP server

  3.

  + ROM (used if no other source is found)

• Question 54:

  Which step in the router boot process searches for an IOS image to load into the router?

  A. bootstrap
  B. POST
  C. mini-IOS
  D. ROMMON mode
  A. bootstrap

• Question 55:

  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

  ---

  A new address type made specifically for IPv6 is called the Anycast Address. These IPv6 addresses are global addresses, these addresses can be assigned to more than one interface unlike an IPv6 unicast address. Anycast is designed to

  send a packet to the nearest interface that is a part of that anycast group.

  The sender creates a packet and forwards the packet to the anycast address as the destination address which goes to the nearest router. The nearest router or interface is found by using the metric of a routing protocol currently running on

  the network. However in a LAN setting the nearest interface is found depending on the order the neighbors were learned. The anycast packet in a LAN setting forwards the packet to the neighbor it learned about first.

• Question 56:

  Syslog was configured with a level 3 trap. Which 3 types of logs would be generated (choose four)

  A. Emergencies
  B. Alerts
  C. Critical
  D. Errors
  E. Warnings
  A. Emergencies
  B. Alerts
  C. Critical
  D. Errors

  ---

  The Message Logging is divided into 8 levels as listed below:

  Level Keyword Description 0 emergencies System is unusable 1 alerts Immediate action is needed 2 critical Critical conditions exist 3 errors Error conditions exist 4 warnings Warning conditions exist 5 notification Normal, but significant, conditions exist 6 informational Informational messages 7 debugging Debugging messages

  The highest level is level 0 (emergencies). The lowest level is level 7. If you specify a level with the "logging console level" command, that level and all the higher levels will be displayed. For example, by using the "logging console warnings" command, all the logging of emergencies, alerts, critical, errors, warnings will be displayed.

• Question 57:

  In an Ethernet network, under what two scenarios can devices transmit? (Choose two.)

  A. when they receive a special token
  B. when there is a carrier
  C. when they detect no other devices are sending
  D. when the medium is idle E. when the server grants access
  C. when they detect no other devices are sending
  D. when the medium is idle E. when the server grants access

  ---

  Ethernet network is a shared environment so all devices have the right to access to the medium. If more than one device transmits simultaneously, the signals collide and cannot reach the destination.

  If a device detects another device is sending, it will wait for a specified amount of time before attempting to transmit.

  When there is no traffic detected, a device will transmit its message. While this transmission is occurring, the device continues to listen for traffic or collisions on the LAN. After the message is sent, the device returns to its default listening

  mode.

• Question 58:

  Refer to the exhibit.

  

  Assuming that the entire network topology is shown, what is the operational status of the interfaces of R2 as indicated by the command output shown?

  A. One interface has a problem.
  B. Two interfaces have problems.
  C. The interfaces are functioning correctly.
  D. The operational status of the interfaces cannot be determined from the output shown.
  C. The interfaces are functioning correctly.

  ---

  The output shown shows normal operational status of the router's interfaces. Serial0/0 is down because it has been disabled using the "shutdown" command.

• Question 59:

  Scenario Refer to the topology. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links. You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices.

  

  

  

  An OSPF neighbor adjacency is not formed between R3 in the main office and R5 in the Branch2 office. What is causing the problem?

  A. There is an area ID mismatch.
  B. There is a PPP authentication issue; a password mismatch.
  C. There is an OSPF hello and dead interval mismatch.
  D. There is a missing network command in the OSPF process on R5.
  C. There is an OSPF hello and dead interval mismatch.

  ---

  The "show ip ospf interface command on R3 and R5 shows that the hello and dead intervals do not match. They are 50 and 200 on R3 and 10 and 40 on R5.

  

• Question 60:

  Which IPv6 address is valid?

  A. 2001:0db8:0000:130F:0000:0000:08GC:140B
  B. 2001:0db8:0:130H::87C:140B
  C. 2031::130F::9C0:876A:130B
  D. 2031:0:130F::9C0:876A:130B
  D. 2031:0:130F::9C0:876A:130B

  ---

  An IPv6 address is represented as eight groups of four hexadecimal digits, each group representing 16 bits (two octets). The groups are separated by colons (:). An example of an IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334. The leading 0's in a group can be collapsed using ::, but this can only be done once in an IP address.