Cisco 200-120 Online Practice Questions and Exam Preparation

Cisco 200-120 Online Questions & Answers

• Question 61:

  What is the effect of using the service password-encryption command?

  A. Only the enable password will be encrypted.
  B. Only the enable secret password will be encrypted.
  C. Only passwords configured after the command has been entered will be encrypted.
  D. It will encrypt the secret password and remove the enable secret password from the configuration.
  E. It will encrypt all current and future passwords.
  E. It will encrypt all current and future passwords.

  ---

  Enable vty, console, AUX passwords are configured on the Cisco device. Use the show run command to show most passwords in clear text. If the service password-encryption is used, all the passwords are encrypted. As a result, the security of device access is improved.

• Question 62:

  Refer to exhibit:

  

  Which two destination addresses will be used by Host A to send data to Host C? (Choose two.)

  A. the IP address of Switch 1
  B. the MAC address of Switch 1
  C. the IP address of Host C
  D. the MAC address of Host C
  E. the IP address of the router's E0 interface
  F. the MAC address of the router's E0 interface
  C. the IP address of Host C
  F. the MAC address of the router's E0 interface

  ---

  While transferring data through many different networks, the source and destination IP addresses are not changed. Only the source and destination MAC addresses are changed. So in this case Host A will use the IP address of Host C and the MAC address of E0 interface to send data. When the router receives this data, it replaces the source MAC address with its own E1 interface's MAC address and replaces the destination MAC address with Host C's MAC address before sending to Host C.

• Question 63:

  Refer to the exhibit.

  

  The two exhibited devices are the only Cisco devices on the network. The serial network between the two devices has a mask of 255.255.255.252. Given the output that is shown, what three statements are true of these devices? (Choose three.)

  A. The Manchester serial address is 10.1.1.1.
  B. The Manchester serial address is 10.1.1.2.
  C. The London router is a Cisco 2610.
  D. The Manchester router is a Cisco 2610.
  E. The CDP information was received on port Serial0/0 of the Manchester router.
  F. The CDP information was sent by port Serial0/0 of the London router.
  A. The Manchester serial address is 10.1.1.1.
  C. The London router is a Cisco 2610.
  E. The CDP information was received on port Serial0/0 of the Manchester router.

  ---

  From the output, we learn that the IP address of the neighbor router is 10.1.1.2 and the question stated that the subnet mask of the network between two routers is 255.255.255.252. Therefore there are only 2 available hosts in this network

  (22 ?2 = 2). So we can deduce the ip address (of the serial interface) of Manchester router is 10.1.1.1 >;.

  The platform of the neighbor router is cisco 2610, as shown in the output ->.

  Maybe the most difficult choice of this question is the answer E or F. Please notice that "Interface" refers to the local port on the local router, in this case it is the port of Manchester router, and "Port ID (outgoing port)" refers to the port on the

  neighbor router.

• Question 64:

  Users have been complaining that their Frame Relay connection to the corporate site is very slow. The network administrator suspects that the link is overloaded.

  

  Based on the partial output of the Router# show frame relay pvc command shown in the graphic, which output value indicates to the local router that traffic sent to the corporate site is experiencing congestion?

  A. DLCI = 100
  B. last time PVC status changed 00:25:40
  C. in BECN packets 192
  D. in FECN packets 147
  E. in DE packets 0
  C. in BECN packets 192

  ---

  If device A is sending data to device B across a Frame Relay infrastructure and one of the intermediate Frame Relay switches encounters congestion, congestion being full buffers, over-subscribed port, overloaded resources, etc, it will set the BECN bit on packets being returned to the sending device and the FECN bit on the packets being sent to the receiving device.

• Question 65:

  What is the first step in the NAT configuration process?

  A. Define inside and outside interfaces.
  B. Define public and private IP addresses.
  C. Define IP address pools.
  D. Define global and local interfaces.
  A. Define inside and outside interfaces.

• Question 66:

  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.

  ---

  The root bridge is determined by the lowest bridge ID, and this switch has a bridge ID priority of 32768, which is higher than the roots priority of 20481.

• Question 67:

  Which two statements describe characteristics of IPv6 unicast addressing? (Choose two.)

  A. Global addresses start with 2000::/3.
  B. Link-local addresses start with FE00:/12.
  C. Link-local addresses start with FF00::/10.
  D. There is only one loopback address and it is ::1.
  E. If a global address is assigned to an interface, then that is the only allowable address for the interface.
  A. Global addresses start with 2000::/3.
  D. There is only one loopback address and it is ::1.

  ---

  Below is the list of common kinds of IPv6 addresses:

  

• Question 68:

  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 69:

  The network administrator is asked to configure 113 point-to-point links. Which IP addressing scheme defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses?

  A. 10.10.0.0/16 subnetted with mask 255.255.255.252
  B. 10.10.0.0/18 subnetted with mask 255.255.255.252
  C. 10.10.1.0/24 subnetted with mask 255.255.255.252
  D. 10.10.0.0/23 subnetted with mask 255.255.255.252
  E. 10.10.1.0/25 subnetted with mask 255.255.255.252
  D. 10.10.0.0/23 subnetted with mask 255.255.255.252

  ---

  We need 113 point-to-point links which equal to 113 sub-networks < 128 so we need to borrow 7 bits (because 2^7 = 128).

  The network used for point-to-point connection should be /30.

  So our initial network should be 30 ?7 = 23.

  So 10.10.0.0/23 is the correct answer.

  You can understand it more clearly when writing it in binary form:

  /23 = 1111 1111.1111 1110.0000 0000

  /30 = 1111 1111.1111 1111.1111 1100 (borrow 7 bits)

• Question 70:

  Which two link protocols are used to carry multiple VLANs over a single link? (Choose two.)

  A. VTP
  B. 802.1q
  C. IGP
  D. ISL
  E. 802.3u
  B. 802.1q
  D. ISL

  ---

  Cisco switches can use two different encapsulation types for trunks, the industry standard 802.1q or the Cisco proprietary ISL. Generally, most network engineers prefer to use 802.1q since it is standards based and will interoperate with other vendors.