Cisco 200-355 Online Practice Questions and Exam Preparation

Cisco 200-355 Online Questions & Answers

• Question 251:

  Which option lists the client configurations steps that must be completed to have an Apple iOS device joined in a hidden SSID?

  A. Settings > WiFi > Join Known Networks.
  B. Settings > WiFi > Then tap the name of the SSID you want to connect to.
  C. Settings > WiFi > Other > Then configure the SSID parameters.
  D. Settings > WiFi > Disable/Renable wifi, then select the hidden SSID from the list of seen SSIDs.
  C. Settings > WiFi > Other > Then configure the SSID parameters.

• Question 252:

  An 802.11g network is experiencing intermittent signal degradation and Spectrum Analyzer is being used to try and locate the problem. What two interferers would likely be identified? (Choose two.)

  A. multiple cell phones
  B. microwave oven
  C. FM Radio
  D. cordless phone
  E. document scanner
  B. microwave oven
  D. cordless phone

• Question 253:

  Which type of frames are ACK and CF-ACK?

  A. control
  B. management
  C. RTS/CTS
  D. association
  A. control

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  Wireless LANs come in three frame types: Frame Types Table Management Control Data Beacon Request to Send (RTS) Simple data Probe Request Clear to Send (CTS) Null function Probe Response Acknowledgment Data+CF-ACK Association Request Power-Save-Poll (PS-Poll) Data+CF-Poll Association Response Contention Free End (CF-End) Data+CF-Ack Authentication Request Contention Free End + Acknowledgment (CF-End +ACK) ACK+CF-Poll Authentication Response CF-ACK Deauthentication CF-ACK+CF-Poll Reassociation request Reassociation response Announcement traffic indication message (ATIM)

  http://www.ciscopress.com/articles/article.asp?p=1271797andseqNum=2

• Question 254:

  What does RF determine?

  A. cycle pattern size
  B. how often a wave occurs
  C. signal size
  D. quantity of energy injected in a signal
  B. how often a wave occurs

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  RF communication works by creating electromagnetic waves at a source and being able to pick up those electromagnetic waves at a particular destination. These electromagnetic waves travel through the air at near the speed of light. The wavelength of an electromagnetic signal is inversely proportional to the frequency; the higher the frequency, the shorter the wavelength. http://www.digi.com/technology/rf-articles/rf-basic

• Question 255:

  A Cisco WCS administrator has marked an alarm as acknowledged. For how many days does Cisco WCS prevent the alarm from reappearing, even if the source of the alarm reoccurs?

  A. 1
  B. 7
  C. 10
  D. 30
  B. 7

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  WCS automatically deletes cleared alerts that are more than seven days old; therefore, your results can show activity only for the last seven days. Until an existing alarm is deleted, a new alarm cannot be generated for any managed entity for which WCS has already generated an alarm. http://www.cisco.com/c/en/us/td/docs/wireless/wcs/7-0/configuration/guide/WCS70cg/7_0event.pdf

• Question 256:

  Which statement about beamforming on a wireless network is true?

  A. It increases the RF coverage of the access points
  B. It moves the wireless signal automatically to different channels when there is high utilization
  C. It improves the SNR by focusing the signal transmission to the client
  D. It balances the traffic load by distributing clients across different access points
  A. It increases the RF coverage of the access points

• Question 257:

  Refer to the exhibit.

  

  Which tab is used to set up web authentication for guest users?

  A. Security > Layer 3
  B. Security > Layer 2
  C. Security > AAA Servers
  D. Advanced
  E. General
  A. Security > Layer 3

• Question 258:

  Which two attacks does Management Frame Protection help to mitigate? (Choose two.)

  A. Eavesdropping
  B. Denial of Service
  C. War Driving
  D. Man-in-the-Middle
  B. Denial of Service
  D. Man-in-the-Middle

• Question 259:

  When a wireless guest network is implemented using auto-anchor mobility in a controller-based wireless network, which controller is responsible for a guest client's IP address and their security configuration?

  A. any controller that supports the same VLAN
  B. foreign controller
  C. anchor controller
  D. master controller
  E. RF group master controller
  C. anchor controller

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  The anchor controller is responsible for termination of guest WLAN traffic and subsequent access to the Internet. Guest traffic egress occurs at the anchor controller, and the anchor controller is responsible for the client IP address via DHCP and their security configuration. http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/emob41dg/emob41dg-wrapper/ch10GuAc.html#wp1064207

• Question 260:

  Which type of antenna must be used to provide coverage in a hallway?

  A. parabolic dish
  B. directional
  C. dual-patch omnidirectional
  D. omnidirectional
  B. directional