Chapter 10 Checkpoint

Question 1

True or False: All types of computers and mobile devices serve as sending and receiving devices in a communications system

Answer 1

True

Question 2

True or False: On a client/server network, the client controls access to the resources on the network and provide a centralized storage area.

Answer 2

False

Question 3

True or False: On a P2P network, each computer has equal responsibilities and capabilities

Answer 3

True

Question 4

True or False: Wi-Fi networks cannot be integrated with Ethernet networks

Answer 4

False

Question 5

True or False: Most current operating systems do not yet have built-in Bluetooth support

Answer 5

False

Question 6

True or False: UWB requires line-of-sight transmission, so its technology is not as widespread as IrDA

Answer 6

False

Question 7

True or False: For successful communications with NFC devices, the devices or objects must touch or be placed within an inch or two of each other

Answer 7

True

Question 8

True or False: DSL transmits on existing standard copper phone wiring

Answer 8

True

Question 9

True or False: Phone networks, the Internet, and other networks with large amounts of traffic use DSL

Answer 9

False

Question 10

True or False: A broadband modem is a communications device that converts digital signals to analog signals and analog signals to digital signals, so that data can travel along an analog phone line

Answer 10

False

Question 11

True or False: Although some routers may be able to connect more than 200 computers and mobile devices, the performance of the router may decline as you add connections

Answer 11

True

Question 12

True or False: With satellite Internet connections, uplink transmissions usually are slower than downlink transmissions

Answer 12

True

Question 13

For successful communications, you need all of the following except 
A. a sending device 
B. a transponder 
C. a communications channel 
D. transmission media

Answer 13

B. a transponder

Question 14

A(n) ______ is an internal network that uses Internet technologies.

Answer 14

intranet

Question 15

A _____ is a network that connects computers and devices in a limited geographical area such as a home, school, office building, or closely positioned group of buildings.

Answer 15

LAN

Question 16

A(n) _____ network is a simple, inexpensive network that typically connects fewer than 10 computers.

Answer 16

P2P

Question 17

On a _____ network, all of the computers and devices on a network connects to a central drive.

Answer 17

star

Question 18

Wi-Fi sometimes is referred to as _________ _________

Answer 18

wireless Ethernet

Question 19

Which of the following is not a digital dedicated line?
A. NFC 
B. cable Internet service 
C. FTTP 
D. T-carrier lines

Answer 19

Near Field Communications (NFC)

Question 20

A ________ ________ ______ is central communications device that allows computers and devices to transfer data wireless among themselves or to transfer data wireless technologies.

Answer 20

wireless access point

Question 21

third-party business that provides networking services such as EDI services, storage, or email

Answer 21

value-added network (VAN)

Question 22

term used to refer to each computer or device on a network

Answer 22

node

Question 23

layout of computers and devices in a communications network

Answer 23

network topology

Question 24

standard that outlines characteristics of how two devices communicate on a network

Answer 24

protocol

Question 25

guidelines that specify the way computers access the medium to which they are connected, the type(s) of medium used, the speeds used on different types of networks, and the type(s) of physical cable and/or the wireless technology used

Answer 25

network standard

Question 26

a special series of bits that function like a ticket

Answer 26

token

Question 27

network protocol that defines how messages are routed from one end of a network to the other, ensuring the data arrives correctly

Answer 27

TCP/IP

Question 28

technique of breaking a message into individual packets, sending them along the best route available, and then reassembling the data

Answer 28

packet switching

Question 29

the amount of data, instructions, and information that can travel over transmission media

Answer 29

bandwidth

Question 30

the time it takes a signal to travel from one location to another on a network

Answer 30

latency

Question 31

List some reasons why users create networks.

Answer 31

(1) Facilitate communications
(2) Share hardware
(3) Share data and information
(4) Share software
(5) Transfer funds

Question 32

What are EDI and EFT?

Answer 32

EDI, short for electronic data interchange, defines how business documents transmit across transmission media.

EFT, short for electronic funds transfer, allows users connected to a network to exchange money from one account to another via transmission media.

Question 33

What are some network communications standards and protocols?

Answer 33

Network communications standards include:

• Ethernet
• Token ring
• Wi-Fi
• UWB
• IrDA
• WiMax

Network communications protocols include:

• TCP/IP
• Bluetooth
• RFID
• NFC

Question 34

What is a disadvantage of using Bluetooth?

Answer 34

it has low bandwidth

Question 35

List various communications devices.

Answer 35

(1) Digital modems
(2) Wireless modems
(3) Wireless access points
(4) Routers
(5) Network cards
(6) Hubs and Switches

Question 36

List ways you can try to strengthen your wireless signal.

Answer 36

(1) Make sure antennas on wireless routers or wireless access point are extended completely
(2) Consider replacing your antenna(s) them with a wireless signal booster
(3) Position the wireless router or wireless access point in a central location of your home and away from appliances or other electronic devices
(4) Purchase a range extender for your wireless router or wireless access point
(5) Consider replacing your wireless router or wireless access point with a newer model

Question 37

What hardware is necessary for a wireless, Internet-connected home network?

Answer 37

(1) Modem
(2) Router
(3) Wireless access point
(4) Computers and devices

Question 38

What does a user need to know in order for another computer or mobile device to access shared files on a computer?

Answer 38

(1) Establish a connection to the Internet
(2) Most modems allow you to connect only one computer or mobile device and may not have the capability to serve also as a wireless access point
(3) For computers that will will use a wired network connection, connect a network cable from the computer to an available pot on the router
(4) Follow the router’s instructions to configure it
(5) Test the connection on all devices, whether wired or wireless, that are connected to the network.
(6) If desired, enable file sharing so that you can share files among the computers and mobile devices on your home network.
(7) For maximum security, disable Internet and network connections when you are not using them.

Question 39

Differentiate between an uplink and a downlink.

Answer 39

Transmissions form an earth-based station to a satellite is an uplink.
Transmission from a satellite to an earth-based station is a downlink.