10.2 Wireless Standards Quiz

Which IEEE standard describes wireless communication?

802.11b One IEEE standard for wireless is 802.11b.

Which data transmission rate is defined by the IEEE 802.11b wireless standard?

11 mbps. The IEEE 802.11b standard defines wireless transmission rates up to 11 Mbps.

How many total channels are available for 802.11g wireless networks?

11. 802.11b and 802.11g use the 2.4 GHz range which has a total of 11 channels in the US.

Which IEEE wireless standards specify transmission speeds up to 54 Mbps? (Select two.)

802.11a & 802.11g. Both the 802.11a and the 802.11g wireless standards specify maximum transmission speeds up to 54 Mbps.

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

802.11n. Of the technologies listed, only the IEEE 802.11n wireless standard addresses the desired requirements.

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 wireless TV system. Because the 802.11b standard operates within the 2.4 GHz to 2.4835 GHz radio frequency range, the most likely culprit is the wireless TV distribution system.

Which technologies are used by the 802.11ac standard to increase network bandwidth? (Select two.)

160 MHz bonded channels & Eight MIMO radio streams. To increase network bandwidth, the 802.11ac standard uses: Eight MIMO radio streams 160 MHz wide bonded channels.

Which of the following are frequencies defined by 802.11 committees for wireless networking? (Select two.)

2.4 GHz & 5.75 GHz. 802.11 specifications for wireless include standards for operating in the 2.4 GHz range (802.11b, 802.11g, and 802.11n) and the 5.75 GHz range (802.11a and dual-band devices using 802.11n)

How many total channels are available for 802.11a wireless networks?

23. 802.11a wireless uses the 5.75 GHz range which has a total of 23 channels.

What is the frequency of 802.11a networking?

5.75 GHz range. 802.11a wireless operates in the 5.75 GHz range.

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?

802.11a. 802.11a is the best choice for this client. While both 802.11a and 802.11g each operate at 54 Mbps, 802.11g operates in the 2.4 GHz to 2.4835 GHz range; which will cause interference with the client's wireless phone system. 802.11a, on the other hand, operates in the 5.725 GHz to 5.850 GHz frequency range; which won't interfere with the phone system.

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?

802.11n. 802.11n is the best choice for this client and provides up to 600 Mbps. With 802.11n, you may have a single device that uses multiple radios, one that can operate at one frequency and another that can operate on a different frequency. Because of this, 802.11n usually allows for compatibility between all 802.11 standards, depending upon the specific implementation.