Question 1

An Extended Service Set (ESS) consists of two or more BSSs.

Accepted Answer

A) True 
 B)False  True

Question 2

The range of an AP acting as the base station is approximately _____.

Accepted Answer

A)   573 feet
B)   375 feet
C)   750 feet
D)   735 feet B

Question 3

Which of the following is not a function of an AP?

Accepted Answer

A)   sends and receives RF signals
B)   connects to the wired network
C)   serves as a router
D)   acts as a bridge between the wired and wireless networks C

Question 4

If the AP does not send the SSID of the WLAN in the beacon, client devices can still obtain the SSID by _______.

Accepted Answer

A)   sending an associate request frame
B)   transmitting an SSID request frame
C)   sending a probe frame
D)   transmitting a special data frame

Question 5

Some vendors have already integrated the components of a wireless NIC directly onto the notebook's _____.

Accepted Answer

A)   motherboard's chipset
B)   floppy drive
C)   hard drive
D)   CD-ROM drive

Question 6

The highest data rate for an 802.11 RF WLAN is about ______ Mbps.

Accepted Answer

A)   22
B)   1
C)   2
D)   54

Question 7

A PLCP frame is made up of three parts, which are the preamble, the header, and the _____.

Accepted Answer

A)   error correction
B)   CRC
C)   SIFS
D)   data

Question 8

The Physical Layer Convergence Procedure (PLCP) standards for 802.11b are based only on _____ spread spectrum.

Accepted Answer

A)   frequency hopping
B)   QAM
C)   direct sequence
D)   BPSK

Question 9

The IEEE 802.11b standard that outlines the specifications for RF WLANs is based on _____.

Accepted Answer

A)   FHSS
B)   DSSS
C)   infrared
D)   OFDM

Question 10

Because all the IEEE WLAN features are isolated in the PHY and _____ layers, any network operating system or LAN application will run on a WLAN without any modification.

Accepted Answer

A)   MAC
B)   network
C)   PLCP
D)   PMD

Question 11

IEEE 802.11 operates in ______ mode, and each frame must be acknowledged.

Accepted Answer

A)   ACK
B)   FDMA
C)   half-duplex
D)   full-duplex

Question 12

Network managers like to subdivide large networks into smaller units known as subnets because this makes it easier to manage the entire network.

Accepted Answer

A) True 
 B)False

Question 13

The IEEE _____ standard defines a local area network that provides cable-free data access at a rate of up to 2 Mbps for clients that are either mobile or in a fixed location.

Accepted Answer

A)   802.3
B)   802.21
C)   802.11
D)   802.3.1

Question 14

The PLCP frame preamble and header are always transmitted at ____ Mbps.

Accepted Answer

A)   2
B)   5.5
C)   1
D)   11

Question 15

The method used in 802.11 to implement CSMA/CA is based on ______.

Accepted Answer

A)   DSSS
B)   DCF
C)   FHSS
D)   PCF

Question 16

A wireless NIC performs the same functions as a wired NIC except that it_____.

Accepted Answer

A)   does not transmit the packet
B)   uses an antenna instead of a wired connection
C)   contains special memory
D)   does not use parallel transmission

Question 17

In PCF, the client devices cannot transmit unless ________.

Accepted Answer

A)   the WLAN is operating in peer-to-peer mode
B)   the AP sends an ACK frame
C)   the AP sends data first
D)   the client is "polled" by the AP

Question 18

In ad hoc mode, the wireless clients communicate directly with the AP.

Accepted Answer

A) True 
 B)False

Question 19

On a regular basis, wireless clients will scan all the radio frequencies to determine if a different AP can provide better service.

Accepted Answer

A) True 
 B)False

Question 20

Power over Ethernet delivers power to an AP through the same wires used for data in a standard unshielded twisted pair (UTP) Ethernet cable.

Accepted Answer

A) True 
 B)False

Exam 7: Wi-Fi Wireless Local Area Networks

An Extended Service Set (ESS) consists of two or more BSSs.

The range of an AP acting as the base station is approximately _____.

Which of the following is not a function of an AP?

If the AP does not send the SSID of the WLAN in the beacon, client devices can still obtain the SSID by _______.

Some vendors have already integrated the components of a wireless NIC directly onto the notebook's _____.

The highest data rate for an 802.11 RF WLAN is about ______ Mbps.

A PLCP frame is made up of three parts, which are the preamble, the header, and the _____.

The Physical Layer Convergence Procedure (PLCP) standards for 802.11b are based only on _____ spread spectrum.

The IEEE 802.11b standard that outlines the specifications for RF WLANs is based on _____.

Because all the IEEE WLAN features are isolated in the PHY and _____ layers, any network operating system or LAN application will run on a WLAN without any modification.

IEEE 802.11 operates in ______ mode, and each frame must be acknowledged.

Network managers like to subdivide large networks into smaller units known as subnets because this makes it easier to manage the entire network.

The IEEE _____ standard defines a local area network that provides cable-free data access at a rate of up to 2 Mbps for clients that are either mobile or in a fixed location.

The PLCP frame preamble and header are always transmitted at ____ Mbps.

The method used in 802.11 to implement CSMA/CA is based on ______.

A wireless NIC performs the same functions as a wired NIC except that it_____.

In PCF, the client devices cannot transmit unless ________.

In ad hoc mode, the wireless clients communicate directly with the AP.

On a regular basis, wireless clients will scan all the radio frequencies to determine if a different AP can provide better service.

Power over Ethernet delivers power to an AP through the same wires used for data in a standard unshielded twisted pair (UTP) Ethernet cable.