Deck 2: Wireless LAN Devices and Standards

Question 1

A(n) ____ card improves input/output speed over a PC Card by increasing the bus width to 32 bits yet still supports lower-voltage PC Cards.

A) mini PCI
B) CardBus
C) built-in
D) access point

Answer 1

B

Question 2

Most industry experts recommend one access point for no more than ____ users if they are performing basic e-mail, light Web surfing, and occasionally transferring medium-sized files.

A) 10
B) 30
C) 50
D) 100

Answer 2

C

Question 3

Ultimately, who regulates standards that are developed by consortia?

A) a regulatory body
B) the marketplace
C) the government
D) the manufacturers

Answer 3

B

Question 4

What is a disadvantage of standards?

A) reduced competition
B) devices produced by different vendors may not interoperate
C) higher prices
D) they can open domestic markets in larger countries to overseas competition

Question 5

Which type of remote wireless bridge connection is used to connect multiple LAN segments together?

A) segment-to-segment
B) multipoint-to-multipoint
C) point-to-point
D) point-to-multipoint

Question 6

What function is performed by a wireless gateway?

A) authentication
B) encryption
C) bandwidth management
D) All of the above

Question 7

If a remote wireless bridge is in repeater mode it functions as a standard AP only and does not communicate with other remote wireless bridges.

Question 8

Only one type of wireless NIC is available for laptop computers.

Question 9

What is another name for a NIC?

A) client network adapter
B) mini PCI
C) access point
D) bridge

Question 10

An access point has a(n) ____ wired network interface that allows it to connect by cable to a standard wired network.

A) IEEE 802
B) RJ-45
C) compact flash
D) PCI

Question 11

Most bridges have what is known as ____ that minimizes the spread of the signal so that it can reach farther distances.

A) delay spread
B) interspersed communications
C) scheduled delays
D) multipoint scheduling

Question 12

The IEEE 802.11g draft was a compromise based on input from several different chip (microprocessor) manufacturers, who had a major stake in the outcome.

Question 13

Which of the following statements describes the difference between a CF wireless NIC and a PC card?

A) PC card is smaller than CF
B) PC card consumes less power than CF
C) PC card is larger than CF
D) CF requires separate antenna to be built into monitor

Question 14

How does an access point receive electrical power if it is mounted in a location that is not close to an electrical outlet?

A) through radio waves
B) through the unused wires in a standard unshielded twisted pair (UTP) Ethernet cable
C) through a USB cable
D) it must be mounted near an outlet

Question 15

Microsoft Windows has become the ____ standard operating system today for personal desktop computers and network servers.

A) de facto
B) de jure
C) consortia
D) All of the above

Question 16

If a remote wireless bridge is set to ____, it can only transmit to another bridge in root mode.

A) access point mode
B) root mode
C) non-root mode
D) repeater mode

Question 17

Beginning with Windows ____, all Microsoft desktop operating systems recognize a wireless NIC without the need for any external software drivers.

A) NT
B) ME
C) 2000
D) XP

Question 18

CF cards consist of a small circuit board that contains flash memory chips and a dedicated controller chip.

Question 19

A device called a ____ must sometimes be attached to a PDA in order to establish a wireless connection. The device contains a slot for a wireless NIC or similar device.

A) shoe
B) slot
C) sled
D) bridge

Question 20

De facto standards are not actually standards at all.

Question 21

Access points are typically mounted on a(n) ____________________ to reduce interference from surrounding objects.

Question 22

A(n) ____________________ is a small card that is functionally equivalent to a standard PCI expansion card.

Question 23

____________________ bands are in effect bands of the radio spectrum that are available nationwide to all users, without requiring a license.

Question 24

What is the name for the computer network architecture standards developed by the IEEE?

A) Project Athena
B) Project Network
C) Project 802
D) Project 1000

Question 25

What are de jure standards?

Question 26

What are the responsibilities of the FCC?

Question 27

The radio frequency spectrum is divided into ____ different sections or bands.

A) 300
B) 450
C) 900
D) 1200

Question 28

List at least three advantages of standards for wireless technology.

Question 29

Describe infrared transmissions as they are used for wireless networks.

Question 30

The 802.11b standard can support wireless devices that are up to ____ meters apart.

A) 30
B) 90
C) 115
D) 130

Question 31

What are the two functions of an access point?

Question 32

Remote wireless ____________________ are ideal solutions for connecting sites such as satellite offices, remote campus settings, or temporary office locations when the sites are separated by obstacles such as bodies of water, freeways, or railroads that make using a wired connection impractical or very expensive.

Question 33

What are the current IEEE committees for wireless standards?

Question 34

Which IEEE committee establishes standards for wireless wide area networks?

A) 802.3
B) 802.11
C) 802.13
D) 802.16

Question 35

When a business is registered as a ____ they are qualified be placed in an online database of wireless hotspot locations.

A) Wi-Fi Alliance member
B) Wi-Fi Zone
C) SOHO
D) WECA

Question 36

The IEEE 802.11 standard outlines the use of ____ transmissions for WLANs.

A) diffused infrared
B) directed infrared
C) radio wave
D) gallium arsenide

Question 37

A remote wireless bridge can function in one of four different modes. Describe each mode.

Question 38

What are the steps involved in a wireless NIC transmission?

Question 39

The goal of a(n) ____________________ is to develop standard that promote their specific technology in a short period of time.

Question 40

Describe the IEEE 802.11b standard.

Question 41

What is IEEE 802.11n?