Wireless Interview Questions


  • What is Wi-Fi?
  • What is a Wi Fi Hotspot?
  • What is IBSS, BSS and ESS ?
  • Why WPA encryption is preferred over WEP?
  • What is 802.1x and EAP ?
  • Name two devices can interfere with the operation of a wireless network because they operate on similar frequencies?
  • What are three basic parameters to configure on a wireless access point?
  • What is the maximum data rate specified for IEEE 802.11b WLANs?
  • Which encryption type does WPA2 uses ?
  • When two laptops directly directed wirelessly,what type of topology has been created ?
  • Which Spread spectrum technology does the 802.11b standard define for operation ?
  • Which two wireless encryption method are based on RC4 encryption algorithm ?
  • Which is the minimum parameter need on the access point inorder to allow a wireless client to operate on it ?
  • What is the frequency range of the IEEE 802.11g standard?
  • What is the maximum data rate for the 802.11a standard?
  • What is the maximum data rate for the 802.11g standard?
  • Can access point enabled with LWAPP, join the controller enabled with CAPWAP?
  • Give an example of access point model, which can join only CAPWAP & one example which can join either of LWAPP or CAPWAP?
  • When access point starts up, what will be the behavior in regards of LWAPP & CAPWAP?
  • What are the basic guidelines for implementing CAPWAP?
  • How to use USB console port on the Cisco 5500 wireless?
  • How WLC works in terms of packet transfer or what is the mechanism?
  • What is the master controller mode on WLC?
  • What is the function of WLAN on WLC?
  • How does DHCP work with the WLC?
  • How do i change power & channels for a LAP?
  • What happens to the wireless network when I perform a software upgrade? Do all the access points (APs) registered to a WLC go down until they are upgraded, or are they upgraded one at a time so that the wireless network can remain up?
  • Can a Cisco IOS Software−based access point (AP) that has been converted to lightweight mode register with Cisco 4100 Series WLCs?
  • Is it possible to go back and make corrections in the WLC configuration wizard at the time of the initial configuration?
  • With the “ Management via Wireless” feature enabled on WLCs in a mobility group, I can only access one WLC from that mobility group, but not all. Why?
  • Is it possible to assign an integrated controller in a 3750 Switch and a 4400 wireless LAN controller within the same mobility group?
  • Are there any basic requirements to maintain when I use the mobility anchor feature in order to configure wireless LAN controllers (WLCs) for guest access?
  • If the WLCs in the same mobility group are separated by Network Address Translation (NAT) boundaries, can they communicate mobility messages with each other?
  • Can we place the lightweight access point (LAP) under Network Address Translation (NAT)?
  • Does LWAPP from access point (AP) to WLC work through NAT boundaries?
  • Can I upgrade the WLC from one major version to another directly?
  • How do I prevent loops on the WLC?
  • Is there any way to recover my password for WLC?
  • Why are our access points (APs) that are registered to other WLCs that are in the same RF group shown as rogues?


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