INSTRUCTOR SOLUTIONS MANUAL
GUIDE TO WIRELESS COMMUNICATIONS
5TH EDITION
CHAPTER NO. 01: INTRODUCTION TO WIRELESS
COMMUNICATIONS
TABLE OF CONTENTS
Review Questions ........................................................................................................................................ 1
Hands-On Projects ...................................................................................................................................... 5
Project 1-1 ................................................................................................................................................. 5
Project 1-2 ................................................................................................................................................. 6
Project 1-3 ................................................................................................................................................. 7
Project 1-4 ................................................................................................................................................. 7
Project 1-5 ................................................................................................................................................. 7
Real-World Exercise ................................................................................................................................... 8
Exercise 1-1 .............................................................................................................................................. 8
Exercise 1-2 .............................................................................................................................................. 8
Exercise 1-3 .............................................................................................................................................. 9
Exercise 1-4 .............................................................................................................................................. 9
Challenge Case Project ............................................................................................................................... 9
REVIEW QUESTIONS
1. Ultra-wide band transmission technology is typically used for ___________.
a. displaying webpages on a cellular phone
b. connecting devices installed close together at extremely high speeds
c. finding the location of a car within a city
d. transmitting data at distances of up to 35 miles
Answer: b. connecting devices installed close together at extremely high speeds
Explanation: UWB is a short-range transmission technique that is capable of sending 4K
and 8K TV signals between devices to avoid the use of cables.
2. Bluetooth devices communicate using small radio transceivers called __________ that
are built onto microprocessor chips.
, a. receivers
b. transponders
c. radio modules
d. link managers
Answer: c. radio modules
Explanation: Bluetooth devices are designed to be very small and use as little power as
possible. A single chip incorporates all of the circuitry necessary to implement Bluetooth
on a device, making it possible to build miniaturized devices such as earbud-style
headphones.
3. ZigBee devices transmit data at maximum rates up to __________ .
a. 250 kbps
b. 1 Mbps
c. 721.3 kbps
d. 3 Mbps
Answer: a. 250 kbps
Explanation: ZigBee technology was developed to transmit very small amounts of data
such as the turning of a light switch on or off.
4. IEEE 802.11n-equipped devices can be as far as 375 feet (114 meters) apart and can send
and receive data at rates over ____________ Mbps, according to the IEEE standard.
a. 75
b. 600
c. 100
d. 54
Answer: b. 600
Explanation: Although the 802.11n amendment to the standard supports the use of four
transmitters, each capable of transmitting at the rate of 150 Mbps, no 802.11n device with
this capability was ever available on the market.
5. Each Bluetooth device uses a _________ , which is special software that helps them
identify other Bluetooth devices.
a. frame
b. link manager
c. repeater
d. bridge
Answer: b. link manager
Explanation: The link manager software in Bluetooth is used to set up, manage, and
terminate a communication channel between capable devices.
6. Bluetooth can send data through physical barriers, like walls. True or False?
Answer: True
Explanation: Bluetooth uses RF signals, which, unlike light signals, can penetrate walls.
7. Bluetooth devices can transmit at maximum data rates of 75 Mbps. True or False?
Answer: False
, Explanation: Most Bluetooth devices can transmit at a maximum data rate of 2 Mbps.
Bluetooth specification v3.0 enabled transfer speeds of up to 24 Mbps through a second
radio. The receiver must have the same dual radio setup.
8. A wireless network interface card performs basically the same functions and looks like a
traditional network interface card. True or False?
Answer: True
Explanation: The only difference between the two is the medium used for transmission.
A wireless NIC has radios and antennas whereas a traditional NIC has an ethernet
interface that connects via cable.
9. An Earth station transmits to a satellite at one frequency, and the satellite regenerates and
transmits the signal back to Earth on the same frequency. True or False?
Answer: False
Explanation: To be able to retransmit in real time, the satellite has to use a different
radio operating on a different frequency.
10. Eliminating cable installation costs is an advantage of wireless technologies. True or
False?
Answer: True
Explanation: Wireless eliminates the need for installing and hiding cables as well as
moving all the cables or installing new ones if the layout of the office changes.
11. The automatic connection between various Bluetooth devices creates a network called
a(n) ____________ .
a. micronet
b. small net
c. piconet
d. Intranet
Answer: c. piconet
Explanation: A Bluetooth network supports a maximum of seven devices that are within
33 feet (10 meters) of a master device. This arrangement is called a “piconet” in the
Bluetooth specification.
12. Fifth-generation (5G) cellular technology allows data connections at a rate of up to
____________.
a. 20 Gbps (Gigabits per second)
b. 1 Gbps
c. 20 Mbps (Megabits per second)
d. 100 Mbps
Answer: a. 20 Gbps (Gigabits per second)
Explanation: The 5G specification supports data transmission at a maximum rate of 20
Gbps.
13. An 802.11 wireless NIC, when configured to communicate with a wired network, sends
its signals through invisible radio waves to __________ .
, a. another computer directly
b. an access point
c. a wireless server
d. the Internet
Answer: b. an access point
Explanation: The access point or AP is the device that functions as a connection
“bridge” between the wireless and wired networks.
14. ___________ is a wireless technology that can be used for data communications and
transmits as far as 50 miles (80 kilometers).
a. Wi-Fi
b. Microwave
c. WiGig
d. WWAN
Answer: b. Microwave
Explanation: Microwave transmitters have been used since the 1950s to carry voice calls
between towers set up across the continent. Today’s microwave equipment can be located
as far as 50 miles (80 kilometers) apart and carry data at rates up to 6 Gbps.
15. How can a ZigBee network be extended beyond its maximum range?
a. By using network cables
b. It can’t, you would have to use Wi-Fi or another kind of wireless network.
c. ZigBee devices that support mesh networking can route packets
d. By installing a ZigBee AP
Answer: c. ZigBee devices that support mesh networking can route packets.
Explanation: Mesh networking allows devices to “route” data between one another,
helping to expand the range of the network beyond the maximum distance for a single
radio link.
16. Explain the role of an access point in a WLAN.
Answer: It acts as a bridge between the wired and wireless networks.
Explanation: In a Wi-Fi network, all devices connect to an access point, which is
responsible for reformatting the individual chunks of data and pass them on between the
wired and wireless networks, much as a bridge connects different land masses separated
by a river.
17. Describe the difference between WPANs, WLANs, WMANs, and WWANs with a single
word.
Answer: Range or distance
Explanation: Distance or range is the main differentiator between the different wireless
networking technologies.
18. What could you use a WLAN for in a classroom setting?
Answer: Answers will vary but should include a minimum of two of: Internet access,
proctoring exams, displaying websites and slides.
Explanation: WLANs can provide students with Internet access from the classroom but
GUIDE TO WIRELESS COMMUNICATIONS
5TH EDITION
CHAPTER NO. 01: INTRODUCTION TO WIRELESS
COMMUNICATIONS
TABLE OF CONTENTS
Review Questions ........................................................................................................................................ 1
Hands-On Projects ...................................................................................................................................... 5
Project 1-1 ................................................................................................................................................. 5
Project 1-2 ................................................................................................................................................. 6
Project 1-3 ................................................................................................................................................. 7
Project 1-4 ................................................................................................................................................. 7
Project 1-5 ................................................................................................................................................. 7
Real-World Exercise ................................................................................................................................... 8
Exercise 1-1 .............................................................................................................................................. 8
Exercise 1-2 .............................................................................................................................................. 8
Exercise 1-3 .............................................................................................................................................. 9
Exercise 1-4 .............................................................................................................................................. 9
Challenge Case Project ............................................................................................................................... 9
REVIEW QUESTIONS
1. Ultra-wide band transmission technology is typically used for ___________.
a. displaying webpages on a cellular phone
b. connecting devices installed close together at extremely high speeds
c. finding the location of a car within a city
d. transmitting data at distances of up to 35 miles
Answer: b. connecting devices installed close together at extremely high speeds
Explanation: UWB is a short-range transmission technique that is capable of sending 4K
and 8K TV signals between devices to avoid the use of cables.
2. Bluetooth devices communicate using small radio transceivers called __________ that
are built onto microprocessor chips.
, a. receivers
b. transponders
c. radio modules
d. link managers
Answer: c. radio modules
Explanation: Bluetooth devices are designed to be very small and use as little power as
possible. A single chip incorporates all of the circuitry necessary to implement Bluetooth
on a device, making it possible to build miniaturized devices such as earbud-style
headphones.
3. ZigBee devices transmit data at maximum rates up to __________ .
a. 250 kbps
b. 1 Mbps
c. 721.3 kbps
d. 3 Mbps
Answer: a. 250 kbps
Explanation: ZigBee technology was developed to transmit very small amounts of data
such as the turning of a light switch on or off.
4. IEEE 802.11n-equipped devices can be as far as 375 feet (114 meters) apart and can send
and receive data at rates over ____________ Mbps, according to the IEEE standard.
a. 75
b. 600
c. 100
d. 54
Answer: b. 600
Explanation: Although the 802.11n amendment to the standard supports the use of four
transmitters, each capable of transmitting at the rate of 150 Mbps, no 802.11n device with
this capability was ever available on the market.
5. Each Bluetooth device uses a _________ , which is special software that helps them
identify other Bluetooth devices.
a. frame
b. link manager
c. repeater
d. bridge
Answer: b. link manager
Explanation: The link manager software in Bluetooth is used to set up, manage, and
terminate a communication channel between capable devices.
6. Bluetooth can send data through physical barriers, like walls. True or False?
Answer: True
Explanation: Bluetooth uses RF signals, which, unlike light signals, can penetrate walls.
7. Bluetooth devices can transmit at maximum data rates of 75 Mbps. True or False?
Answer: False
, Explanation: Most Bluetooth devices can transmit at a maximum data rate of 2 Mbps.
Bluetooth specification v3.0 enabled transfer speeds of up to 24 Mbps through a second
radio. The receiver must have the same dual radio setup.
8. A wireless network interface card performs basically the same functions and looks like a
traditional network interface card. True or False?
Answer: True
Explanation: The only difference between the two is the medium used for transmission.
A wireless NIC has radios and antennas whereas a traditional NIC has an ethernet
interface that connects via cable.
9. An Earth station transmits to a satellite at one frequency, and the satellite regenerates and
transmits the signal back to Earth on the same frequency. True or False?
Answer: False
Explanation: To be able to retransmit in real time, the satellite has to use a different
radio operating on a different frequency.
10. Eliminating cable installation costs is an advantage of wireless technologies. True or
False?
Answer: True
Explanation: Wireless eliminates the need for installing and hiding cables as well as
moving all the cables or installing new ones if the layout of the office changes.
11. The automatic connection between various Bluetooth devices creates a network called
a(n) ____________ .
a. micronet
b. small net
c. piconet
d. Intranet
Answer: c. piconet
Explanation: A Bluetooth network supports a maximum of seven devices that are within
33 feet (10 meters) of a master device. This arrangement is called a “piconet” in the
Bluetooth specification.
12. Fifth-generation (5G) cellular technology allows data connections at a rate of up to
____________.
a. 20 Gbps (Gigabits per second)
b. 1 Gbps
c. 20 Mbps (Megabits per second)
d. 100 Mbps
Answer: a. 20 Gbps (Gigabits per second)
Explanation: The 5G specification supports data transmission at a maximum rate of 20
Gbps.
13. An 802.11 wireless NIC, when configured to communicate with a wired network, sends
its signals through invisible radio waves to __________ .
, a. another computer directly
b. an access point
c. a wireless server
d. the Internet
Answer: b. an access point
Explanation: The access point or AP is the device that functions as a connection
“bridge” between the wireless and wired networks.
14. ___________ is a wireless technology that can be used for data communications and
transmits as far as 50 miles (80 kilometers).
a. Wi-Fi
b. Microwave
c. WiGig
d. WWAN
Answer: b. Microwave
Explanation: Microwave transmitters have been used since the 1950s to carry voice calls
between towers set up across the continent. Today’s microwave equipment can be located
as far as 50 miles (80 kilometers) apart and carry data at rates up to 6 Gbps.
15. How can a ZigBee network be extended beyond its maximum range?
a. By using network cables
b. It can’t, you would have to use Wi-Fi or another kind of wireless network.
c. ZigBee devices that support mesh networking can route packets
d. By installing a ZigBee AP
Answer: c. ZigBee devices that support mesh networking can route packets.
Explanation: Mesh networking allows devices to “route” data between one another,
helping to expand the range of the network beyond the maximum distance for a single
radio link.
16. Explain the role of an access point in a WLAN.
Answer: It acts as a bridge between the wired and wireless networks.
Explanation: In a Wi-Fi network, all devices connect to an access point, which is
responsible for reformatting the individual chunks of data and pass them on between the
wired and wireless networks, much as a bridge connects different land masses separated
by a river.
17. Describe the difference between WPANs, WLANs, WMANs, and WWANs with a single
word.
Answer: Range or distance
Explanation: Distance or range is the main differentiator between the different wireless
networking technologies.
18. What could you use a WLAN for in a classroom setting?
Answer: Answers will vary but should include a minimum of two of: Internet access,
proctoring exams, displaying websites and slides.
Explanation: WLANs can provide students with Internet access from the classroom but
