Cisco 200-125 Online Practice Questions and Exam Preparation

Cisco 200-125 Online Questions & Answers

• Question 1081:

  Which command enables IPv6 forwarding on a Cisco router?

  A. ipv6 local
  B. ipv6 host
  C. ipv6 unicast-routing
  D. ipv6 neighbor
  C. ipv6 unicast-routing

  ---

  To enable IPv6 routing on the Cisco router use the following command:

  ipv6 unicast-routing

  If this command is not recognized, your version of IOS does not support IPv6.

• Question 1082:

  What is the default lease time for a DHCP binding?

  A. 24 hours
  B. 12 hours
  C. 48 hours
  D. 36 hours
  A. 24 hours

  ---

  Explanation: By default, each IP address assigned by a DHCP Server comes with a one- day lease, which is the amount of time that the address is valid. To change the lease value for an IP address, use the following command in DHCP pool configuration mode:

• Question 1083:

  Which subnet mask would be appropriate for a network address range to be subnetted for up to eight LANs, with each LAN containing 5 to 26 hosts?

  A. 0.0.0.240
  B. 255.255.255.252
  C. 255.255.255.0
  D. 255.255.255.224
  E. 255.255.255.240
  D. 255.255.255.224

  ---

  For a class C network, a mask of 255.255.255.224 will allow for up to 8 networks with 32 IP addresses each (30 usable).

• Question 1084:

  Refer to the exhibit.

  

  Hosts in network 192.168.2.0 are unable to reach hosts in network 192.168.3.0. Based on the output from RouterA, what are two possible reasons for the failure? (Choose two.)

  A. The cable that is connected to S0/0 on RouterA is faulty.
  B. Interface S0/0 on RouterB is administratively down.
  C. Interface S0/0 on RouterA is configured with an incorrect subnet mask.
  D. The IP address that is configured on S0/0 of RouterB is not in the correct subnet.
  E. Interface S0/0 on RouterA is not receiving a clock signal from the CSU/DSU.
  F. The encapsulation that is configured on S0/0 of RouterB does not match the encapsulation that is configured on S0/0 of RouterA.
  E. Interface S0/0 on RouterA is not receiving a clock signal from the CSU/DSU.
  F. The encapsulation that is configured on S0/0 of RouterB does not match the encapsulation that is configured on S0/0 of RouterA.

  ---

  From the output we can see that there is a problem with the Serial 0/0 interface. It is enabled, but the line protocol is down. There could be a result of mismatched encapsulation or the interface not receiving a clock signal from the CSU/DSU.

• Question 1085:

  Which option is a valid hostname for a switch?

  A. Switch-Cisco
  B. Switch-Cisco!
  C. SwitchCisco
  D. SwitchCisc0
  C. SwitchCisco

• Question 1086:

  Which two pieces of information can you learn by viewing the routing table?(choose two)

  A. whether an ACL was applied inbound or outbound to an interface
  B. the EIGRP or BGP autonomous system
  C. whether the administrative distance was manually or dynamically configured
  D. which neighbor adjacencies are established
  E. the length of time that a route has been known
  C. whether the administrative distance was manually or dynamically configured
  E. the length of time that a route has been known

• Question 1087:

  Refer to the exhibit.

  

  Why is flash memory erased prior to upgrading the IOS image from the TFTP server?

  A. The router cannot verify that the Cisco IOS image currently in flash is valid.
  B. Flash memory on Cisco routers can contain only a single IOS image.
  C. Erasing current flash content is requested during the copy dialog.
  D. In order for the router to use the new image as the default, it must be the only IOS image in flash.
  C. Erasing current flash content is requested during the copy dialog.

  ---

  During the copy process, the router asked "Erasing flash before copying? [confirm]" and the administrator confirmed (by pressing Enter) so the flash was deleted. Note: In this case, the flash has enough space to copy a new IOS without deleting the current one. The current IOS is deleted just because the administrator wants to do so. If the flash does not have enough space you will see an error message like this:

  %Error copying tftp://192.168.2.167/ c1600-k8sy-mz.l23-16a.bin (Not enough space on device)

• Question 1088:

  What 8-bit field exists in IP packet for QoS?

  A. Tos Field
  B. DSCP
  C. IP Precedence
  D. Cos
  A. Tos Field

• Question 1089:

  Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?

  A. IETF
  B. ANSI Annex D
  C. Q9333-A Annex A
  D. HDLC
  A. IETF

  ---

  Cisco supports two Frame Relay encapsulation types: the Cisco encapsulation and the IETF Frame Relay encapsulation, which is in conformance with RFC 1490 and RFC 2427. The former is often used to connect two Cisco routers while the latter is used to connect a Cisco router to a non-Cisco router. You can test with your Cisco router when typing the command Router(config-if)#encapsulation frame-relay ? on a WAN link. Below is the output of this command (notice Cisco is the default encapsulation so it is not listed here, just press Enter to use it).

  

  Note: Three LMI options are supported by Cisco routers are ansi, Cisco, and Q933a. They represent the ANSI Annex D, Cisco, and ITU Q933-A (Annex A) LMI types, respectively. HDLC is a WAN protocol same as Frame-Relay and PPP so it is not a Frame Relay encapsulation type.

• Question 1090:

  Refer to the exhibit, you determine that Computer A cannot ping Computer

  Which reason for the problem is most likely true?

  

  you determine that Computer A cannot ping Computer. Which reason for the problem is most likely true?

  A. The Subnet mask for Computer A is incorrect.
  B. The default gateway address for Computer A is incorrect.
  C. The subnet mask for computer B is incorrect.
  D. The default gateway address for computer B is incorrect.
  A. The Subnet mask for Computer A is incorrect.

  ---

  255.255.255.224 =/27