CHAPTER 12: WIRELESS NETWORKING Flashcards
Whats the acronym for MIMO?P388
multiple-input,multiple output
—— allows for communication at both the 2.4GHz abd 5 GHz frequencies by using channel bonding?P388
802.11n
What is MAC efficiency?P388
It’s protocols that require acknowledgment of each and every frame.
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
20MHz
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
802.11ac
What’s the number of channels for 802.11?P390
3
What is the frequency bandwith for 802.11?P390
2.4GHz
What is the transmission for 802.110a?P390
OFDM
What is the data rates for 80.11g?P390
1,2,5.5,11-6,9,12,5.5,11
What is the ratified for 802.11n?P390
2010
What is the data rate for 802.11ac?P390
1000+
To make a wireless network to work properly you need what two devices?P391
Access point and a wireless NIC
To get the full 54Mbs benefit of 802.11a and 802.11g you need to be how far away?p391
50 feet and 100 feet
Whats the acronym for WAP?P391
Wireless access point
What is the acronym for NAT?P392
Network address translation
What is the acronym for NIC?P392
Network interface card
What are the two classes of antennas on the market today?P393
Omni directional and directional or yagi (point to point)
Do Yagi antennas don’t provide a greater range than Omni antennas?P393 T/F
False
Omnis and Yagis antennas are rated in units of what?p393
Decibel isotropic (dbi) or decibel dipole (dbd).
What is the indoor range at 1Mbs rated in feet for Air-ant2410y-r?P394
800ft
What is the dbi gain for Air-ant2506?P394
5.2
What is a Indoor range at 11Mbs rated in feet for Air- at1728?P394
142ft
What is dbi gain for Air- ant2506?P394
5.2
What is the outdoor range at 11Mbs rated in feet for Air-ant24120/P394
7,392ft
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.
