21: Wireless Networking

The wireless Ethernet standard that operates at a maximum of 54 Mbps on the 2.4-GHz frequency is __________________.

802.11g

Personal area networks are created by what wireless technology? A. Bluetooth B. IrDA C. Wi-Fi D. Cellular wireless

A

Computers are in __________________ when they connect directly together without using a WAP.

ad hoc mode

Establishing a unique __________________ or network name helps ensure that only wireless network devices configured similarly are permitted access to the network.

service set identifier (SSID)

The wireless Ethernet standard that runs at speeds up to 54 Mbps but has limited range because it uses the 5-GHz frequency is __________________.

802.11a

What is a cheap and easy way to extend the range of a WAP? A. Upgrade the antenna. B. Buy a WAP that advertises a longer range. C. You can't easily boost range. D. Upgrade the wireless NICs.

A

What is the technical name of a wireless network? A. SSID B. BSSID C. SSD D. PoE

A

What standard gained a speed boost in its second version with Enhanced Data Rate technology? A. Bluetooth B. IrDA C. Wi-Fi D. Cellular wireless

A

Which of these Wi-Fi security protocols is the least secure and is easily hacked? A. WEP B. WAP C. AES D. WPA2

A

Two wireless nodes that are communicating directly with each other, without any intermediary systems or hardware, are using what wireless mode? A. Ad hoc B. Bluetooth C. Infrastructure D. 802.11ac

B

What can limit wireless connectivity to a list of accepted users based on the hard-wired address of their wireless NIC? A. Encryption B. MAC filtering C. MIMO D. WEP

B

What is the approximate range of an 802.11b/g network? A. ~1000 ft B. ~300 ft C. ~150 ft D. ~500 ft

B

A technology for setting up wireless PANs and connecting to some peripherals is called __________________.

Bluetooth

802.11 implements __________________, which proactively avoids network packet collisions rather than simply detecting them when they occur. Multiple-Choice Quiz

CSMA/CA

What device centrally connects wireless network nodes in the same way that a hub or switch connects wired Ethernet PCs? A. Bluetooth adapter B. Wireless NIC C. SSID D. WAP

D

What is the best technology if you need Internet access from anywhere in the country? A. Bluetooth B. IrDA C. Wi-Fi D. Cellular wireless

D

Which encryption method used on wireless networks is the most secure? A. WEP B. Wi-Fi C. MU-MIMO D. WPA2

D

Which of the following 802.11 standards can make use of both the 2.4- and 5-GHz bands? A. 802.11a B. 802.11b C. 802.11g D. 802.11n

D

Which wireless standard combines the longest range with the most throughput? A. 802.11ac B. 802.11b C. 802.11g D. 802.11n

D

If you need to share an Internet connection or connect to a wired network through your wireless network, you would use __________________.

Infrastructure Mode

The __________________ feature enables devices on 802.11n networks to make multiple simultaneous connections, allowing for a theoretical throughput of 600 Mbps.

MIMO

Of the three common wireless encryption protocols, __________________ is the least secure.

WEP

The 802.11 protocol is more commonly known as __________________.

WI-FI