CHAPTER 12: WIRELESS NETWORKING Flashcards

1
Q

Whats the acronym for MIMO?P388

A

multiple-input,multiple output

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2
Q

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

A

802.11n

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3
Q

What is MAC efficiency?P388

A

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

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4
Q

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

A

20MHz

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5
Q

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

A

802.11ac

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6
Q

What’s the number of channels for 802.11?P390

A

3

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7
Q

What is the frequency bandwith for 802.11?P390

A

2.4GHz

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8
Q

What is the transmission for 802.110a?P390

A

OFDM

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9
Q

What is the data rates for 80.11g?P390

A

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

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10
Q

What is the ratified for 802.11n?P390

A

2010

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11
Q

What is the data rate for 802.11ac?P390

A

1000+

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12
Q

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

A

Access point and a wireless NIC

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13
Q

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

A

50 feet and 100 feet

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14
Q

Whats the acronym for WAP?P391

A

Wireless access point

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15
Q

What is the acronym for NAT?P392

A

Network address translation

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16
Q

What is the acronym for NIC?P392

A

Network interface card

17
Q

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

A

Omni directional and directional or yagi (point to point)

18
Q

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

19
Q

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

A

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

20
Q

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

21
Q

What is the dbi gain for Air-ant2506?P394

22
Q

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

23
Q

What is dbi gain for Air- ant2506?P394

24
Q

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

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