Cisco 640-722 Online Practice Questions and Exam Preparation

Cisco 640-722 Online Questions & Answers

• Question 31:

  Refer to the exhibit.

  

  Which two options does this icon represent about the status of the respective AP on a Cisco WCS version 7.0 map? (Choose two.)

  A. The 802.11a/n radio is administratively disabled.
  B. The 802.11a/n radio has a minor fault.
  C. The 802.11a/n radio has a major fault.
  D. The 802.11b/g/n radio is administratively disabled.
  E. The 802.11b/g/n radio has a minor fault.
  F. The 802.11b/g/n radio has a major fault.
  C. The 802.11a/n radio has a major fault.
  D. The 802.11b/g/n radio is administratively disabled.

  ---

  When Cisco WCS receives alarm messages from a controller, the Cisco WCS user interface displays an alarm indicator in the lower left corner in an alarm summary panel known as the alarm dashboard. The alarm dashboard only appears

  when the Macromedia flash is installed. Alarms indicate the current fault or state of an element that needs attention. These are usually generated by one or more events. The alarm can be cleared, but the event remains. An example of an

  alarm is AP down, which means that the current status of the access point is down.

  Alarms are color coded as follows:

  

  Clear = No alarm

  

  Red = Critical alarm

  

  Orange = Major alarm

  

  Yellow = Minor alarm

• Question 32:

  What tab contains access point configuration in the WCS?

  A. Controller > Access Points
  B. Configure > Access Points
  C. General > Configure > Access Points
  D. System > Configure > Access Points
  B. Configure > Access Points

  ---

  Step 1 - Choose Configure > Controllers or Configure > Access Points. Step 2 - Choose an IP address of a controller with software release 5.0 or later or choose an access point associated with software release 5.0 or later. Step 3 - Choose System > AP Username Password from the left sidebar menu. The AP Username Password page appears AP Username Password Page

  

  Step 4 - In the AP Username text box, enter the username that is to be inherited by all access points that join the controller. Step 5 - In the AP Password text box, enter the password that is to be inherited by all access points that join the controller. Re-enter in the Confirm AP Password text box. Step 6 - For Cisco autonomous access points, you must also enter and confirm an enable password. In the AP Enable Password text box, enter the enable password that is to be inherited by all access points that join the controller. Re-enter in the Confirm Enable Password text box. Step 7 - Click Save.

• Question 33:

  An engineer is gathering information for a wireless survey of a hospital. What three pieces of information must be collected for an active survey to assess the outcome best suited for the facility? (Choose three.)

  A. presence of microwave ovens
  B. number of patients that are at the facility
  C. utilization of Location Services or voice applications
  D. floor plans of adjacent facilities
  E. use of wireless for secure records
  F. spectrum analysis to locate all the computer work stations
  G. existing Network Switch types and model numbers
  H. type of devices present on the new wireless network
  A. presence of microwave ovens
  C. utilization of Location Services or voice applications
  H. type of devices present on the new wireless network

• Question 34:

  What are two wireless configuration utilities for Apple Mac computers? (Choose two.)

  A. AirPort
  B. AirPort Extreme
  C. AirManager
  D. AirManager Supreme
  E. AirAssistant Ultimate
  A. AirPort
  B. AirPort Extreme

  ---

  AirPort (for 802.11b) and AirPort Extreme (for 802.11b/g/n or 802.11a/b/g/n) are WLAN configuration utilities from Apple. The utility allows the creation of network profiles, association to detected networks, and advanced configuration and troubleshooting. The wireless card can be disabled or enabled from the utility main window.

  Reference: CCNA Wireless (640-722 IUWNE) Quick Reference Guide page 69

• Question 35:

  DRAG DROP

  Drag the characteristics on the left that are associated with the specific controller-based AP deployment mode and drop them in the appropriate category on the right.

  Select and Place:

  

  

• Question 36:

  What are four features of WPA? (Choose four.)

  A. a larger initialization vector, increased to 48 bits
  B. a message integrity check protocol to prevent forgeries
  C. authenticated key management using 802.1X
  D. support for a key caching mechanism
  E. unicast and broadcast key management
  F. requires AES-CCMP
  A. a larger initialization vector, increased to 48 bits
  B. a message integrity check protocol to prevent forgeries
  C. authenticated key management using 802.1X
  E. unicast and broadcast key management

  ---

  TKIP and the related WPA standard implement three new security features to address security problems encountered in WEP protected networks. First, TKIP implements a key mixing function that combines the secret root key with the

  initialization vector before passing it to the RC4 initialization. WEP, in comparison, merely concatenated the initialization vector to the root key, and passed this value to the RC4 routine. This permitted the vast majority of the RC4 based WEP

  related key attacks. Second, WPA implements a sequence counter to protect against replay attacks. Packets received out of order will be rejected by the access point. Finally, TKIP implements a 64-bit Message Integrity Check (MIC).

  To be able to run on legacy WEP hardware with minor upgrades, TKIP uses RC4 as its cipher. TKIP also provides a rekeying mechanism. TKIP ensures that every data packet is sent with a unique encryption key.

  Key mixing increases the complexity of decoding the keys by giving an attacker substantially less data that has been encrypted using any one key. WPA2 also implements a new message integrity code, MIC. The message integrity check

  prevents forged packets from being accepted. Under WEP it was possible to alter a packet whose content was known even if it had not been decrypted.

  Reference: http://en.wikipedia.org/wiki/Temporal_Key_Integrity_Protocol

  http://documentation.netgear.com/reference/fra/wireless/WirelessNetworkingBasics-3-14.html

• Question 37:

  Which single tool helps to troubleshoot client-related issues in a WLAN?

  A. The show and debug commands on the controller.
  B. The show commands on the AP.
  C. Client templates on the Cisco WCS.
  D. Client troubleshooting on the Cisco WCS.
  D. Client troubleshooting on the Cisco WCS.

  ---

  WCS can be used to troubleshoot client-related issues in a wireless environment. It does this with the help of the Troubleshooting tool built into WCS. In order to troubleshoot a client through the WCS, users need to perform these steps

  1.

  From the WCS Dashboard page, click the Monitor menu and choose Clients from the list.

  2.

  This brings up the Client Summary page as shown in Figure 1, which displays the list of clients in the wireless network. Figure 1

  3.

  Click a client to get details such as the SSID or authentication method of a particular client. Figure 2 shows an example of this. The Troubleshoot dialogue box at the bottom right-hand side of the Client Summary page shown in Figure 1 allows users to enter in the MAC address of the device to troubleshoot. This brings you to the Troubleshooting Tool page as shown in Figure 3. Upon identification and selection of the client to troubleshoot, users are presented with the Client Details page:

  

  

  Figure 2

  

  Reference: http://www.cisco.com/c/en/us/support/docs/wireless/4400-series-wireless-lan-controllers/107585-client-con.html

• Question 38:

  Which two features are available in the Cisco WCS Plus license over the base license? (Choose two.)

  A. ad hoc rogue detection
  B. high availability between two Cisco WCS stations
  C. mobility service engine management
  D. auto discovery and containment or notification of rogue APs
  E. client location to the nearest AP
  B. high availability between two Cisco WCS stations
  C. mobility service engine management

  ---

  Cisco WCS PLUS license supports Cisco WCS base license features and the following capabilities: mobility services enablement and high availability. An older Cisco WCS Location license is forward compatible and equivalent to a PLUS license. When upgrading to this release, older Location licenses will appear as PLUS licenses. Older Enterprise licenses are also forward compatible and become PLUS licenses when loaded. The process to provision a Cisco WCS PLUS license is the same as provisioning a current Cisco WCS license.

  Reference: http://www.cisco.com/c/en/us/td/docs/wireless/wcs/7-0/configuration/guide/WCS70cg/7_0warr.html

• Question 39:

  Refer to the exhibit.

  

  What does the yellow shield with the exclamation mark indicate?

  A. The network uses open authentication and no encryption.
  B. The network uses an unsupported channel.
  C. The signal is too distorted to connect.
  D. The AP that is transmitting this SSID uses the wrong RF domain.
  E. This is the ad-hoc network.
  A. The network uses open authentication and no encryption.

  ---

  an exclamation mark inside a yellow shield is displayed if the SSID has no security [Open authentication, no encryption]), clicking Connect and completing the security parameters when applicable.

• Question 40:

  Which two items are used to help convert a lightweight AP into an autonomous AP? (Choose two.)

  A. HTTP express setup on the AP
  B. Cisco WCS template
  C. Cisco WLC CLI
  D. Windows Cisco Conversion Tool
  E. image with naming convention of platform_name-k9w7-tar.default
  F. image with naming convention of platform_name-rcvk9w8-tar
  C. Cisco WLC CLI
  E. image with naming convention of platform_name-k9w7-tar.default

  ---

  See video tutorial in this process at the reference link below:

  Reference: https://supportforums.cisco.com/video/11928901/lwapp-lightweight-mode-autonomous-conversion-and-vice-versa