2.4 Mobile Communications

Question 1

_ is the use of technology that allows us to communicate with others in different locations without the use of any physical connection (wires or cables).

Answer 1

Mobile communication

Question 2

_ is a short-range wireless communications technology to replace the cables connecting electronic devices, allowing a person to have a phone conversation via a headset.

Answer 2

Bluetooth technology

Question 3

The Bluetooth Radio Frequency transceiver operates in the unlicensed Industrial, Scientific, and Medical (ISM) band centered at _ gigahertz (the same range of frequencies used by _ and _).

Answer 3

2.4
microwaves and Wi-Fi

Question 4

T/F
Only some Bluetooth-enabled device in the system can establish a connection via pairing and communicate with each other.

Answer 4

False

Question 5

_ is a communication system established through the use of radio frequency (RF) technology that can function either as an extension to an existing LAN or as an alternative for a wired LAN.

Answer 5

Wireless LAN (WLAN)

Question 6

T/F
There is no need for an access point (AP) that bridges wireless LAN traffic into the wired LAN.

Answer 6

False

Question 7

_ are flexible data communication systems that can be used for applications in which mobility is required.

Answer 7

Wireless local area networks

Question 8

Currently, WLANs can provide data rates up to _ Mbps, but the industry is making a move toward high-speed WLANs.

Answer 8

11

Question 9

_ 802.11 committee is responsible for WLAN standards.

Answer 9

The International Enterprise for Electronics Engineering (IEEE)

Question 10

Most modern WLANs are based on _ standards and marketed under the Wi-Fi brand name.

Answer 10

IEEE 802.11

Question 11

The _, can also act as a repeater for wireless nodes, effectively doubling the maximum possible distance between nodes.

Answer 11

access point (AP)

Question 12

T/F
The access point (AP), can also act as a repeater for wireless nodes, effectively doubling the minimum possible distance between nodes.

Answer 12

False

Question 13

To service larger areas, multiple APs may be installed with a _% overlap.

Answer 13

10-15

Question 14

_ is the ability to move freely.

Answer 14

Mobility

Question 15

Electromagnetic fields, radio waves, microwaves and wireless signals are referred to as _ energy.

Answer 15

radio frequency (RF)

Question 16

_ is a term used to refer to wireless digital signals to connect computers and other devices.

Answer 16

Wireless local area networking