Chapter 20

Which 802.11 standard runs on 5GHz a. 802.11a b. 802.11b c. 802.11g d. 802.11c

A - 802.11a

Which is not a wireless radio technology found in computers, tablets or phones? a. Infrared b. Bluetooth c. RFID d. NFC

A - Infrared

If you spot a WAP on the ceiling of a large room with no obvious power outlet nearby, how is it most-likely powered? a. PoE b. RADIUS c. Battery d. Solar

A - PoE

Which device creates a wireless network? A. Wireless access point B. Wireless extender C. Wireless locator D. Wireless repeater

A. A wireless access point (WAP) enables clients to join a wireless network.

Ralph has installed a wireless network in his house, placing the wireless access point in the kitchen, a centralized location. The Wi-Fi works fine in the living room and dining room but goes out almost completely in the bedroom. What's most likely the problem? A. Interference with some metal object B. Improper antenna setup C. Use of the default SSID D. The SSID overlapping with a neighbor's SSID

A. Watch out for microwave ovens, refrigerators, and pipes in the walls. They can interfere with a Wi-Fi signal and create dead spots.

Which is not true of wireless mesh networks? a. Mesh networks have a single base station. b. Mesh networks are best for large enterprise networks. c. Mesh networks have one or more beacon/satellite stations. d. Mesh networks provide wide coverage in homes and small offices.

B - Mesh networks are best for large enterprise networks

Which is not a Wi-Fi capable device? a. WAP b. Switch c. Smartphone d. Tablet

B - Switch

Which is most-likely to prevent a device from connecting to a previously-used Wi-Fi network? a. The antenna(s) are poorly oriented. b. The SSID has changed. c. Too many devices are accessing the WAP. d. The WAP is disconnected from the Internet.

B - The SSID has changed

Bluetooth technology is most often used to link computers into what sort of network? A. Bluetooth area network (BAN) B. Personal area network (PAN) C. Local area network (LAN) D. Wide area network (WAN)

B. Bluetooth most often creates personal area networks.

What's the top speed for data transfers using 802.11ac technology? A. 1+ Mbps B. 1+ Gbps C. 11+ Mbps D. 11+ Gbps

B. Data transfers using 802.11ac top out around 1+ Gbps.

What is the name for the common omni-directional antennas found on wireless access points? A. Bipole antennas B. Dipole antennas C. Omni antennas D. RF antennas

B. Standard omni-directional antennas are called dipole antennas.

Which encryption protocol is deprecated? A. WAP B. WEP C. WPA2 D. WPA3

B. WEP is a deprecated wireless encryption technology.

Which is not a wireless encryption standard? a. WEP b. WPA c. WEP2 d. WPA2

C - WEP2

Which of the following 802.11 standards functions only on the 5-GHz band? A. 802.11g B. 802.11n C. 802.11ac D. 802.11i

C. The 802.11ac standard functions exclusively on the 5-GHz band, while 802.11g functions on 2.4 GHz, 802.11n functions on both, and 802.11i is a security standard called WPA2.

What determines the name of a wireless network? A. EAP B. MAC address C. SSID D. WAP

C. The SSID determines the name of a wireless network.

What technology enables 802.11n networks to make several simultaneous connections and thus improves speed over previous Wi-Fi standards? A. Use of the 2.4-GHz frequency B. Use of the 5-GHz frequency C. WAP D. WPA2

C. The multiple in/multiple out (MIMO) technology implementing multiple antennas enables 802.11n networks to run at much faster speeds than previous Wi-Fi networks.

Which should you try first if your device can't connect to a remembered public wireless network? a. Increase the transmit power on the SOHO router. b. Connect to the SOHO router with a cable. c. Reset the SOHO router to factory defaults. d. Delete the profile and try to connect again.

D - Delete the profile and try to connect again

Which type of wireless network hardware automatically works with its peers to forward traffic? A. Access point B. Wireless repeater C. Wireless extender D. Mesh

D. In wireless mesh networks, each network device can forward traffic for the others (while one of the devices serves as the gateway).