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What does Wi-Fi stand for?
Wireless Fidelity.
True or false: A computer device stores data in analog form.
False.
What does IEEE stand for?
the Institute of Electrical and Electronics Engineers.
What does GSM stand for?
Global System for Mobile Communications.
Types of radio network
the one-to-many (simplex communication) ,
the two-way radio (duplex communication)
Classification of wireless netrorks by their distances?
WPAN ,WLAN, WMAN, WWAN.
Classification of wireless netrorks by their topologies?
point-to-point , point-to-multipoint.
In what frequency band does Bluetooth operate?
2.4 GHz
Which IEEE standards group uses Bluetooth as the basis for the standard?
802.15
What is the other name of IEEE 802.11?
Wi-Fi
What are the three major components of GSM?
MS (Mobile station),
BMS( Base Station Subsystem),
SS (Switching Subsystem)
What type of weather impacts RF signals the most?
Heavy rain.
What are examples of elements that impair the propagation of wireless communications signals through the air medium?
Rain, snow, smog, and smoke.
On what layers of the OSI reference model do wireless networks operate?
Physical layer and data link layer.
When and where invented the first Cordless Telephone?
1975, in USA
A device for radiating or receiving radio waves which is basically used for transmitting signals
Antenna
In what frequency band does 802.11a operate in?
5 GHz
Which standards do wireless MANs employ?
802.11, Wi-Fi, and 802.16
Which generation of cellular systems offers data rates up to 2 Mbps?
Third generation (3G).
What is an advantage of a satellite system?
It can cover vast areas. A single satellite can cover roughly one-third of the Earth’s surface.