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CS 115 Computer Science > Chapter 10 Checkpoint > Flashcards

Chapter 10 Checkpoint Flashcards

1
Q

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

A

True

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2
Q

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

A

False

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3
Q

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

A

True

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4
Q

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

A

False

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5
Q

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

A

False

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6
Q

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

A

False

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7
Q

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

A

True

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8
Q

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

A

True

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9
Q

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

A

False

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10
Q

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

A

False

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11
Q

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

A

True

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12
Q

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

A

True

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13
Q 
For successful communications, you need all of the following except 
A. a sending device 
B. a transponder 
C. a communications channel 
D. transmission media
A

B. a transponder

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14
Q

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

A

intranet

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15
Q

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.

A

LAN

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16
Q

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

A

P2P

17
Q

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

A

star

18
Q

Wi-Fi sometimes is referred to as _________ _________

A

wireless Ethernet

19
Q 
Which of the following is not a digital dedicated line?
A. NFC 
B. cable Internet service 
C. FTTP 
D. T-carrier lines
A

Near Field Communications (NFC)

20
Q

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

A

wireless access point

21
Q

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

A

value-added network (VAN)

22
Q

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

A

node

23
Q

layout of computers and devices in a communications network

A

network topology

24
Q

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

A

protocol

25
Q

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

A

network standard

26
Q

a special series of bits that function like a ticket

A

token

27
Q

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

A

TCP/IP

28
Q

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

A

packet switching

29
Q

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

A

bandwidth

30
Q

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

A

latency

31
Q

List some reasons why users create networks.

A

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

32
Q

What are EDI and EFT?

A

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.

33
Q

What are some network communications standards and protocols?

A

Network communications standards include:

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

Network communications protocols include:

  • TCP/IP
  • Bluetooth
  • RFID
  • NFC
34
Q

What is a disadvantage of using Bluetooth?

A

it has low bandwidth

35
Q

List various communications devices.

A

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

36
Q

List ways you can try to strengthen your wireless signal.

A

(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

37
Q

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

A

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

38
Q

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

A

(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.

39
Q

Differentiate between an uplink and a downlink.

A

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

CS 115 Computer Science (30 decks)

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