Test 2 Flashcards
An antenna produces a signal strength of 200 mW at 10 meters, what signal strength will it produce at a distance of 30 meters ?
22.22
What are types of Wifi systems ?
802.11 , 802.11g, and 802.11n
Bluetooth is best viewed as a ____
Cable replacement technology
Which of the following is relatively immune to small errors?
a. Digital Signaling
b. Analog Signaling
Digital signaling
When a signal grows weaker as it travels, this is called
Attenuation
When one pair in a UTP cord interfere with signals in other pairs, this is ___
crosstalk interference
What 802 Working Group creates Ethernet standards ?
802.3
Which of the following usually has higher port speeds ?
a. Workgroup switches
b. Core switches
c. WLAN point- of - presence
d. WLAN access points
Core switches
Noise that is never present ( part of background) is called
White Noise
UTP cables are produced in twisted pairs because ___
Twisted pairs aid in noise reduction
In Ethernet, limiting transmission to 100 meters is done to limit ___
Attenuation
When the light energies of two pulses arrive at overlapping times, this is ____
Modal Dispersion
If a radio transmission is easily blocked by obstacles, then you need to maintain ___
A clear line of sight
How long does it take an attacker to crack WEP today with readily available software ?
About ten minutes
