CompTia -- Chapter 20 Wireless Networking questions and answers.

WAP What centrally connects wireless network nodes in the same way that a hub connects wired Ethernet PCs? PoE Which feature allows you to plug a single Ethernet cable into the WAP to provide both power and a network connection? CSMA/CA What method do wireless networks use to determine if other nodes are currently broadcasting? Ad hoc What wireless network mode can quickly be used to share files and printers without a WAP? EBSS What is a wireless service area that has been extended by adding more WAPs? near the center Where is the location for an omni-directional antenna in your home or office? MAC address filtering What method enables you to limit access to your wireless network based on the physical, hard-wired address of the units' wireless NIC? network name What is another name for the Service Set Identifier parameter? MAC Most WAPs support filtering, in which data packets that do not contain the appropriate address are rejected. What kind of address is filtered? AES Which standard or protocol represents a security improvement in WPA2 over WEP and WPA? 40 How many bits does WEP encryption use to scramble data packets? EAP Which standard or protocol provides a security improvement that WPA addresses over WEP? TKIP Which protocol does WPA use to provide a new encryption key for every sent packet? WPS Which standard has a security flaw that allows a hacker to guess an eight-digit code? 802.11b Which wireless networking standard supports data throughput of up to 11 Mbps? 150 feet What is the theoretical maximum range of the 802.11a wireless networking standard? 5 GHz At what frequency range does the 802.11a-based wireless technology operate? 2.4 GHz At what frequency range do the 802.11b- and 802.11g-based wireless technologies operate? 54 Mbps What is the speed at which the 802.11g wireless technology transfers data? MIMO What 802.11n feature increases its range and speed? 2.4 and 5 GHz What frequencies does 802.11n use? 4 Mbps What is the maximum capacity for data transfer between infrared devices? Bluetooth What wireless technology is often used to connect headsets to smartphones? PAN What type of wireless network is very small and designed for "quick-and-dirty" jobs? 1 meter What is the maximum distance of a Class 3 Bluetooth device? Cellular wireless network What enables you to connect to the Internet through a network-aware smartphone, tablet, or other mobile device? WPA/WPA2-Enterprise What WPA/WPA2 encryption version uses a RADIUS server for secure authentication? Channel and frequency What WAP settings should be adjusted in an environment with overlapping Wi-Fi signals? site survey What is the first step in choosing an optimal location for an access point? dipole What is the standard straight-wire omnidirectional wireless antenna called? 2 dB What is the gain from a typical WAP? Pairing What process needs to be undertaken to enable Bluetooth devices to create a secure connection? Manufacturer's Web site Where should you look for firmware updates on older WAPs? Windows Device Manager What should you open up to troubleshoot a suspected hardware problem?