CHAPTER 12: WIRELESS NETWORKING

Question 1

Whats the acronym for MIMO?P388

Answer 1

multiple-input,multiple output

Question 2

—— allows for communication at both the 2.4GHz abd 5 GHz frequencies by using channel bonding?P388

Answer 2

802.11n

Question 3

What is MAC efficiency?P388

Answer 3

It’s protocols that require acknowledgment of each and every frame.

Question 4

802.11g and 802.11a use —– channels ,and tones on the sides of each channel are not used to protect the main carrier,which means that 11Mbs are unused or wasted?P388

Answer 4

20MHz

Question 5

What is a Wi-Fi standard that works in the 5GHz range and delivers up to 1 Gigacite throughput that was approved by 802.11 standards?P389

Answer 5

802.11ac

Question 6

What’s the number of channels for 802.11?P390

Answer 6

3

Question 7

What is the frequency bandwith for 802.11?P390

Answer 7

2.4GHz

Question 8

What is the transmission for 802.110a?P390

Answer 8

OFDM

Question 9

What is the data rates for 80.11g?P390

Answer 9

1,2,5.5,11-6,9,12,5.5,11

Question 10

What is the ratified for 802.11n?P390

Answer 10

2010

Question 11

What is the data rate for 802.11ac?P390

Answer 11

1000+

Question 12

To make a wireless network to work properly you need what two devices?P391

Answer 12

Access point and a wireless NIC

Question 13

To get the full 54Mbs benefit of 802.11a and 802.11g you need to be how far away?p391

Answer 13

50 feet and 100 feet

Question 14

Whats the acronym for WAP?P391

Answer 14

Wireless access point

Question 15

What is the acronym for NAT?P392

Answer 15

Network address translation

Question 16

What is the acronym for NIC?P392

Answer 16

Network interface card

Question 17

What are the two classes of antennas on the market today?P393

Answer 17

Omni directional and directional or yagi (point to point)

Question 18

Do Yagi antennas don’t provide a greater range than Omni antennas?P393 T/F

Answer 18

False

Question 19

Omnis and Yagis antennas are rated in units of what?p393

Answer 19

Decibel isotropic (dbi) or decibel dipole (dbd).

Question 20

What is the indoor range at 1Mbs rated in feet for Air-ant2410y-r?P394

Answer 20

800ft

Question 21

What is the dbi gain for Air-ant2506?P394

Answer 21

5.2

Question 22

What is a Indoor range at 11Mbs rated in feet for Air- at1728?P394

Answer 22

142ft

Question 23

What is dbi gain for Air- ant2506?P394

Answer 23

5.2

Question 24

What is the outdoor range at 11Mbs rated in feet for Air-ant24120/P394

Answer 24

7,392ft

Question 25

if you’re having intermittent problem with hosts connecting to the wireless network and varying signal strengths at different locations what shoud you check?P395

Answer 25

The antennae location in an office or warehouse to make sure you are getting the best coverage possible.