12.1_Introduction to Wireless

Question 1

WLAN

Answer 1

Wireless LAN

Question 2

Types of Wireless Networks
Uses low powered transmitters for a short-range network, usually 20 to 30 ft. (6 to 9 meters). It is based on the 802.15 standard and a 2.4-GHz radio frequency.

Answer 2

Wireless Personal-Area Networks (WPAN)

Question 3

___ based devices are commonly used in WPANs.

Answer 3

Bluetooth and ZigBee

Question 4

Types of Wireless Networks
Uses transmitters to cover a medium-sized network, usually up to 300 feet.
suitable for use in a home, office, and even a campus environment

Answer 4

Wireless LANs(WLAN)

Question 5

WLANs are based on the 802.11 standard and a 2.4-GHz or ___ radio frequency.

Answer 5

5-GHz

Question 6

Types of Wireless Networks
Uses transmitters to provide wireless service over a larger geographic area.
suitable for providing wireless access to a metropolitan city or specific district. Also, it uses specific licensed frequencies.

Answer 6

Wireless MANs (WMAN)

Question 7

Types of Wireless Networks
Uses transmitters to provide coverage over an extensive geographic area. They are suitable for national and global communications. They also use specific licensed frequencies.

Answer 7

Wireless Wide-Area Networks(WWANs)

Question 8

Wireless Technologies
An IEEE 802.15 WPAN standard that uses a device-pairing process to communicate over distances up to 300 ft. (100m). It can be found in smart home devices, audio connections, automobiles, and other devices that require a short distance connection.

Answer 8

Bluetooth

Question 9

There are two types of Bluetooth radios:
___: This supports multiple network technologies including mesh topology to large scale network devices.

Answer 9

Bluetooth Low Energy (BLE)

Question 10

There are two types of Bluetooth radios:
____: This supports point to point topologies and is optimized for audio streaming.

Answer 10

Bluetooth Basic Rate/Enhanced Rate (BR/EDR)

Question 11

Wireless Technologies
__ is an alternative to broadband wired internet connections, competing with DSL and cable. However, it is typically used in areas that are not yet connected to a DSL or cable provider.

Answer 11

WiMAX (Worldwide Interoperability for Microwave Access)

Question 12

Wireless Technologies
____ wireless mobile networks primarily used by cellular phones but can be used in automobiles, tablets, and laptops. multi-access networks carrying both data and voice communications.

Answer 12

Cellular Broadband

Question 13

Wireless Technologies
A cell site is created by a___ transmitting signals in a given area. Interconnecting cell sites form the cellular network. The two types of cellular networks are ____ and ___

Answer 13

cellular tower
Global System for Mobile (GSM)
Code Division Multiple Access (CDMA)

Question 14

Wireless Technologies
Provides network access to remote sites through the use of a directional satellite dish that is aligned with a specific geostationary Earth orbit satellite.

Answer 14

Satellite Broadband

Question 15

Wireless Technologies
It is usually more expensive and requires a clear line of sight. Typically, it is used by rural homeowners and businesses where cable and DSL are not available.

Answer 15

Satellite Broadband

Question 16

These standards define how radio frequencies are used for wireless links.

Answer 16

IEEE 802.11 WLAN standards

Question 17

___ uses multiple antennas as both the transmitter and receiver to improve communication performance. Up to eight transmit and receive antennas can be used to increase throughput.

Answer 17

multiple-input and multiple-output (MIMO)

Question 18

All wireless devices operate in the radio waves range of the___

Answer 18

electromagnetic spectrum

Question 19

WLAN networks operate in the __ GHz frequency band and the __ GHz band

Answer 19

2.4
5

Question 20

Wireless Standards Organizations
____regulates the allocation of the radio frequency spectrum and satellite orbits through the **-R.

Answer 20

International Telecommunication Union (ITU)

Question 21

Wireless Standards Organizations
___specifies how a radio frequency is modulated to carry information. It maintains the standards for local and metropolitan area networks (MAN) with the IEEE 802 LAN/MAN family of standards. The dominant standards in the IEEE 802 family are 802.3 Ethernet and 802.11 WLAN.

Answer 21

IEEE

Question 22

Wireless Standards Organizations
___a global, non-profit, industry trade association devoted to promoting the growth and acceptance of WLANs. It is an association of vendors whose objective is to improve the interoperability of products that are based on the 802.11 standard by certifying vendors for conformance to industry norms and adherence to standards.

Answer 22

Wi-Fi Alliance