Exam 1: Introduction to Wireless Communications

Ultra Wide Band technology is used primarily for _____________________.

A wireless network interface card performs basically the same functions and looks similar to a traditional network interface (NIC) card.

Explain how a WLAN can be used in a classroom. An instructor can create a classroom presentation on a notebook computer in his home or school office, then carry the computer right into the classroom. He does not have to plug and unplug cables to attach to the campus network. Instead, the notebook automatically connects to the classroom network as soon as the instructor walks into the room; it can even connect to multimedia display projectors without using wires.

_________ provides a standard way to transmit, format, and display Internet data on cellular phones.

Describe how wireless networks can reduce installation time. Wireless networks eliminate the need to install cables, which is a slow and expensive process.

An earth station transmits to a satellite at one frequency, and the satellite regenerates and transmits the signal back to earth at another frequency.

__________ uses wireless transmissions for data communications as much as 35 miles apart.

Each Bluetooth device uses a ____________, which is special software that helps identify other Bluetooth devices.

The new fourth generation (4G) cellular technology will allow data to be transmitted at a maximum speed of __________ Mbps.

IEEE 802.11n devices can be as far as 375 feet apart and can send and receive data at up to ________ million bits per second (Mbps).

Explain how a WAP cellular phone sends and receives Internet data. A WAP-enabled cellular phone sends and receives internet data in the form of a deck of cards. Data transmitted to this type of cellular phone must first be translated by a WAP server from a Web site. Data transmitted from a WAP-enabled cellular phone to the Internet is sent via the WAP server before it is forwarded to an Internet server.

Bluetooth can send data through physical barriers, like walls.

Eliminating installation costs is a disadvantage of a WLAN.

"WAP2" stands for ________________.

Explain the role of an access point (AP) in a WLAN. An access point acts as a base station for all communications in a WLAN as well as an interface between the WLAN and the wired LAN.

Bluetooth devices communicate using small radio transceivers called ___________ that are built onto microprocessor chips.

An 802.11 wireless NIC, when configured to communicate with a wired network, sends its signals through invisible radio waves to ____________.

Most Bluetooth devices can transmit data at up to 1 Mbps over a distance of 33 feet (10 meters).

The automatic connection between various Bluetooth devices creates a network called a(n) ___________.

Explain how implementing a wireless network can be helpful in case of disaster recovery. In the event of a disaster such as a flood or fire, managers can quickly relocate the office without needing to find a new facility with network wiring.