Cisco 200-125 Online Practice Questions and Exam Preparation

Cisco 200-125 Online Questions & Answers

• Question 891:

  Which two statements about NTP operations are true?(choose two)

  A. NTP uses UDP over IP
  B. NTP uses TCP over IP
  C. Cisco routers can act only as NTP clients
  D. Cisco routers can act as both NTP authoritative severs and NTP clients
  E. Cisco routers can act only as NTP servers
  A. NTP uses UDP over IP
  D. Cisco routers can act as both NTP authoritative severs and NTP clients

• Question 892:

  Which two spanning-tree port states does RSTP combine to allow faster convergence? (Choose two.)

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

• Question 893:

  Which NTP concept indicates the distance between a device and the reliable time source?

  A. clock offset
  B. stratum
  C. reference
  D. dispersion
  B. stratum

• Question 894:

  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 895:

  Refer to the exhibit.

  

  Which rule does the DHCP server use when there is an IP address conflict?

  A. The address is removed from the pool until the conflict is resolved.
  B. The address remains in the pool until the conflict is resolved.
  C. Only the IP detected by Gratuitous ARP is removed from the pool.
  D. Only the IP detected by Ping is removed from the pool.
  E. The IP will be shown, even after the conflict is resolved.
  A. The address is removed from the pool until the conflict is resolved.

  ---

  An address conflict occurs when two hosts use the same IP address. During address assignment, DHCP checks for conflicts using ping and gratuitous ARP. If a conflict is detected, the address is removed from the pool. The address will not

  be assigned until the administrator resolves the conflict.

  (Reference:

  http://www.cisco.com/en/US/docs/ios/12_1/iproute/configuration/guide/1cddhcp.html)

• Question 896:

  Which command should you enter to configure a DHCP client?

  A. ip dhcp client
  B. ip helper-address
  C. ip address dhcp
  D. ip dhcp pool
  C. ip address dhcp

• Question 897:

  The output of the show frame-relay pvc command shows "PVC STATUS = INACTIVE". What does this mean?

  A. The PVC is configured correctly and is operating normally, but no data packets have been detected for more than five minutes.
  B. The PVC is configured correctly, is operating normally, and is no longer actively seeking the address of the remote router.
  C. The PVC is configured correctly, is operating normally, and is waiting for interesting traffic to trigger a call to the remote router.
  D. The PVC is configured correctly on the local switch, but there is a problem on the remote end of the PVC.
  E. The PVC is not configured on the local switch.
  D. The PVC is configured correctly on the local switch, but there is a problem on the remote end of the PVC.

  ---

  The PVC STATUS displays the status of the PVC. The DCE device creates and sends the report to the DTE devices. There are 4 statuses:

  +

  ACTIVE: the PVC is operational and can transmit data + INACTIVE: the connection from the local router to the switch is working, but the connection to the remote router is not available + DELETED: the PVC is not present and no LMI information is being received from the Frame Relay switch

  +

  STATIC: the Local Management Interface (LMI) mechanism on the interface is disabled (by using the "no keepalive" command). This status is rarely seen so it is ignored in some books.

• Question 898:

  Which two tasks does the Dynamic Host Configuration Protocol perform? (Choose two.)

  A. Set the IP gateway to be used by the network.
  B. Perform host discovery used DHCPDISCOVER message.
  C. Configure IP address parameters from DHCP server to a host.
  D. Provide an easy management of layer 3 devices.
  E. Monitor IP performance using the DHCP server.
  F. Assign and renew IP address from the default pool.
  C. Configure IP address parameters from DHCP server to a host.
  F. Assign and renew IP address from the default pool.

  ---

  The Dynamic Host Configuration Protocol (DHCP) is a network protocol used to configure devices that are connected to a network (known as hosts) so they can communicate on that network using the Internet Protocol (IP). It involves clients and a server operating in a client-server model. DHCP servers assigns IP addresses from a pool of addresses and also assigns other parameters such as DNS and default gateways to hosts.

• Question 899:

  Which two pieces of information are provided by the show controllers serial 0 command? (Choose two.)

  A. the type of cable that is connected to the interface.
  B. The uptime of the interface
  C. the status of the physical layer of the interface
  D. the full configuration of the interface
  E. the interface's duplex settings
  A. the type of cable that is connected to the interface.
  C. the status of the physical layer of the interface

  ---

  The show controller command provides hardware-related information useful to troubleshoot and diagnose issues with Cisco router interfaces. The Cisco 12000 Series uses a distributed architecture with a central command-line interface (CLI) at the Gigabit Route Processor (GRP) and a local CLI at each line card.

• Question 900:

  Which two things does a router do when it forwards a packet? (Choose two.)

  A. determines the next hop on the path
  B. switches the packet to the appropriate outgoing interfaces
  C. computes the destination host address
  D. forwards ARP requests
  E. updates the destination IP address
  A. determines the next hop on the path
  B. switches the packet to the appropriate outgoing interfaces