10.2.6 Practice Questions

What is the frequency of 802.11a networking?
900 MHz
1.2 GHz
2.4 GHz
5.75 GHz

5.75 GHz

How many total channels are available for 802.11a wireless networks?
3
11
12
23
54

23

How many total channels are available for 802.11g wireless networks?
3
11
12
23
54

11

Your organization uses an 802.11b wireless network. Recently, other tenants installed the following equipment in your building:
• A wireless television distribution system running at 2.4 GHz
• A wireless phone system running at 5.8 GHz
• A wireless phone system running at 900 MHz
• An 802.11a wireless network running in the 5.725 – 5.850 GHz frequency range
• An 802.11j wireless network running in the 4.9 – 5.0 GHz frequency range
Since this equipment was installed, your wireless network has been experiencing significant interference. Which system is to blame?
The 5.8 GHz wireless phone system
The 900 MHz wireless phone system
The wireless TV system
The 802.11a wireless network
The 802.11j wireless network

The wireless TV system

Which of the following are frequencies defined by 802.11 committees for wireless networking? (Select two.)
900 MHz
1.9 GHz
2.4 GHz
5.75 GHz
10 GHz

2.4 GHz 5.75 GHz

Which IEEE standard describes wireless communication?
802.2
802.11b
802.3
802.5
802.7b

802.11b

Which data transmission rate is defined by the IEEE 802.11b wireless standard?
2 Mbps
10 Mbps
11 Mbps
56 Mbps

11 Mbps

You are designing a wireless network for a client. Your client needs the network to support a data rate of at least 54 Mbps. In addition, the client already has a wireless telephone system installed that operates 2.4 GHz.
Which 802.11 standard will work best in this situation?
802.11g
802.11d
802.11a
802.11b
802.11c

802.11a

You are designing an update to your client’s wireless network. The existing wireless network uses 802.11b equipment; which your client complains runs too slowly. She wants to upgrade the network to run up to 600 Mbps.
Due to budget constraints, your client wants to upgrade only the wireless access points in the network this year. Next year, she will upgrade the wireless network boards in her users’ workstations. She has also indicated that the system must continue to function during the transition period.
Which 802.11 standard will work best in this situation?
802.11c
802.11d
802.11a
802.11b
802.11n

802.11n

Which IEEE wireless standards specify transmission speeds up to 54 Mbps? (Select two.)
802.1x
Bluetooth
802.11a
802.11g
802.11b

802.11a 802.11g

You have been contacted by OsCorp to recommend a wireless Internet solution. The wireless strategy must support a transmission range of 1,200 feet, use a frequency range of 5 GHz, and provide the highest possible transmission speeds.
Which of the following wireless solutions would you recommend?
802.11n
Bluetooth
WEP
802.11b
802.11a

802.11n

Which technologies are used by the 802.11ac standard to increase network bandwidth? (Select two.)
40 MHz bonded channels
160 MHz bonded channels
Four MIMO radio streams
Data compression
Eight MIMO radio streams

160 MHz bonded channels Eight MIMO radio streams