Defining Requirement Areas

10 important questions on Defining Requirement Areas

Obj 1.5.1 What are the aspects that need to be considered when designing for capacity requirements?

  • IP address availability
  • Client count in requirement area
  • Number of devices in coverage area
  • Device types
  • Throughput demand for each application

Obj 1.5.2 What questions must you ask yourself when considering client device types?

  • What PHYs are supported
  • What data rates are supported
  • What power level do they transmit
  • What channels are allowed
  • What channels widths are supported
  • Is DFS supported
  • What are the receive sensitivity levels

What is Master Session Key (MSK)?

Key generated from 802.1X authentication process and is unique for each client session.
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What is Pairwise Master Key (PMK)?

Key generated from MSK, authentication server sends this to authenticator or WLC.

What is Pairwise Transient Key (PTK)

Generated during the four-way handshake from the PMK. This key is calculated on both the supplicant and authenticator.

What is 802.11e and DCF?

  • 802.11e is layer-2 QOS on the wireless link
  • DCF is distributed coordination function that gain access to the wireless medium, frames are assigned to an access category.

List the four DCF Access Categories?

  • AC_VO Voice Highest priority
  • AC_VI Video Middle Priority
  • AC_BE Best Effort Low Priority
  • AC_BK Background Lowest Priority

What is a WLAN profile?

A WLAN profile is a set of configuration for the WLAN that will assign specific settings to APs the profile is assigned to.

What protocol and portnumbers are used by LWAPP?

UDP 12222 & 12223

What protocol and port numbers are used by CAPWAP?

UDP 5246 & 5247

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