Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Computer Science > Networks > Flashcards

Networks Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What does LAN stand for

A

Local area network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What does lan cover

A

A small geographical area on a single site

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Can LANs be wireless or wired

A

Both

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Can LANs be wireless or wired

A

Both

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Who owns the hardware for LANs

A

The organisation that uses it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Who owns the hardware for LANs

A

The organisation that uses it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Where do you find LANs

A

Businesses, schools and universities

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Where do you find a LAN

A

universities, businesses and schools

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

In a home what can be connected to a LAN

A

PCs, tablets, smart TVs and printers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the pros of LAN

A

Sharing files are easier- network users can access the same files, work collaboratively on them and copy files between machines
You can share the same hardware (printers) on a LAN
the internet connection can be shared between every device connected to the LAN
you can stall and update software on all computers at once rather than one by one
You can communicate with LAN users cheaply and easily (instant messaging)
User accounts can be stored centrally so users can log in from any device on the network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does WAN stand for

A

Wide area network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What does WAN stand for

A

Wide area network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is a WAN

A

It connects LANs together that are in different geographical locations and it covers a large geographical area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Who owns and manages the WAN and why

A

Telecommunications companies because a WAN is very expensive to set up

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the biggest WAN

A

The internet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How are WANs connected

A

Fibre or copper telephone lines, satellite links or radio links

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What does NIC stand for

A

Network interface card

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is a NIC

A

An internal piece of hardware that allows a device to connect to a network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Where are NICs found

A

Built into the mother board for wired and wireless connections

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What do switches do

A

Connect devices on a LAN by receiving data from one device and transmitting the data to the device on the network with the correct MAC address

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What are routers responsible for

A

Transmitting data between networks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Where are routers used

A

In homes and offices to connect the LAN to the internet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What three things does a router contain

A

Router switch and WAP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What are the three types of cab,es used for a wire network

A

Ethernet (CAT 5e, CAT 6), coaxial cable and fibre optic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is a CAT 6 cable

A

Two twisted pairs of copper wires which are twisted together to reduce internal interference

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is a coaxial cable

A

A single copper wire surrounded by a plastic layer for insulation and a metallic mesh which provides shielding from outside interference

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What do fibre optic cables do

A

Transmit data as light - they are high performance and don’t suffer interference and can transmit over large distances without loss of signal quality

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What does wireless networks use to transmit data

A

Radio waves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Why is a wireless network more convenient than a wireless one

A

You can move around while still being connected and they are cheaper as you need fewer wires

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What are two common wireless technologies

A

Bluetooth and wifi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What is Bluetooth

A

A direct connection between two devices so that data can be shared

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

What is the connection range for Bluetooth

A

Range varies but usually 10 metres for mobile devices

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Does Wi-Fi or Bluetooth have a higher bandwidth

A

Wi-Fi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

What uses bluetooth

A

Mobile/wearable devices

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

What is Wi-Fi used for

A

To connect multiple devices to a LAN at the same time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

What is the connection range for Wi-Fi

A

Usually between 40 and 100 metres

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

Where is Wi-Fi used

A

In the home for routers, desktops, laptops and smartphones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

What does WAP stand for

A

Wireless access point

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

What do you need a WAP

A

To allow devices to connect wirelessly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

What is bandwidth

A

The amount of data that can be transferred in a given time. The greater the bandwidth the better the network can perform

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

What connection is faster and more reliable

A

Wired

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

What cable has better performance

A

Fibre optic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

What does wireless performance depend on

A

Range of the device, amount of interference from other wireless networks, physical obstructions like thick walls in buildings, choice of hardware and network topology

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

How does bandwidth affect the performance of networks

A

Bandwidth is shared between the devices on a network and too many devices or heavy use may cause congestion and slow the network. You can limit the bandwidth available to individual users to address this

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

Who is a client server network managed by

A

A server

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

Who are the devices connected to a client server network

A

The clients

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

Where are the files and software stored on a client server network

A

Stored centrally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

Where are the files and software stored on a client server network

A

Stored centrally on the server

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

What is a client server relationship

A

When the client sends a request to the server (asking for data) and the server processes the request and responds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

What does the server store

A

User profiles, passwords and access information and it may request a password before fulfilling certain requests or deny requests to users without the right access level

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

What relationship is the internet

A

Client server relationship

52
Q

What are pros of a client server relationship

A

Easy to keep track of files as they are stored centrally
Easy to perform backups
Easy to install and update software
Easy to manage network security
Servers are very reliable and are always on

53
Q

What are the cons of a client server network

A

Expensive to set up
Needs IT specialists to maintain server and network
If server goes down all clients lose access to their work
The server may become overloaded if too many clients are using it at once

54
Q

An example of a client server network

A

Websites are hosted on web servers and web browsers are client programs that send requests to web servers. Web servers send web pages to clients

55
Q

What is a peer to peer network

A

All devices are equal by connecting directly to each other without a server

56
Q

Where are peer to peer networks used

A

At home to share files between devices or connect devices to a printer

57
Q

Where are files stored in a peer to peer network

A

On individual devices which you can share to others

58
Q

Pros of a peer to peer network

A

Easy to maintain - you don’t need expertise or expensive hardware
No dependence on server - if one device fails the whole network isn’t lost

59
Q

What are the cons of a peer to peer network

A

No centralised management - devices need their updates and security installed individually
Backups are more complicated
Copying files between devices creates duplicate files - can loose track of files
Peer machines are less reliable and data may be lost if one fails
Machines are prone to slow down when other devices access them

60
Q

Name peer to peer applications

A

Video calling and file sharing

61
Q

What are all devices in a star topology connected to

A

A central switch or server that controls the network

62
Q

What is a network

A

When two or more devices are connected to one another which allows devices to share informations and resources

63
Q

What is a topology

A

The layout of a network

64
Q

What does the central switch in a star topology allow

A

Allows many devices to access the server simultaneously

65
Q

Are star network wired or wireless

A

Can be both

66
Q

What are the pros of a star network

A

If one device fails the rest are unaffected
It’s simple to add more devices
Better performance as data goes straight to the central devices so all devices can transmit data at once and there are few data collisions

67
Q

What are the cons of a star network

A

If it’s wired all devices need a wire to connect which can be expensive
If there is a problem with the switch or server the whole network is affected

68
Q

How do mesh networks work

A

By sending data along the fastest route from one device to another

69
Q

What is a mesh topology

A

A decentralised network where all devices are connected to one another

70
Q

What are the pros of a mesh topology

A

There is no single point so if one device fails then the data is sent along a different route to get to its target

71
Q

What are the cons of a mesh network

A

They are expensive as more wire is needed to connect all the devices together but now more people are using wireless mesh networks because it’s more practical

72
Q

What are the cons of a mesh network

A

They are expensive as more wire is needed to connect all the devices together but now more people are using wireless mesh networks because it’s more practical

73
Q

What is a full mesh topology

A

When every device is connected to every other device

74
Q

What is a partial-mesh topology

A

When not all devices are fully connected

75
Q

What is a network standard

A

Set of agreed requirements for hardware and software

76
Q

Why are network standards important

A

They allow manufacturers to create products and programs that will be compatible with products and programs from other manufacturers

77
Q

What is a network protocol

A

A set of rules for how devices communicate and how data is transmitted across a network

78
Q

What are communication protocols

A

How communication between two devices must start and end, how the data is organised and what the device must do if data goes missing

79
Q

Why does a device need a MAC address

A

So it can be found on a network

80
Q

What does a MAC address consist of

A

48 or 64 bit binary numbers that can be converted to hexadecimal to make it easier to use

81
Q

What is a MAC address

A

A unique identifier that is assigned to all network enabled devices by the manufacturer which can’t be changed

82
Q

What network is a MAC address for

A

The same network

83
Q

What are MAC addresses mainly used by

A

Ethernet protocol on LANs as LAN switches red MAC addresses and use them to direct data to the correct device

84
Q

What networks or IP addresses used for

A

Different networks

85
Q

When are IP addresses used

A

When sending data between TCP/IP networks (over the internet)

86
Q

How are IP addresses assigned

A

Either automatically or manually before the device can access the network

87
Q

What does the TCP/IP protocol do

A

Dictate how data is sent between networks

88
Q

What does TCP stand for

A

Transmission control protocol

89
Q

What does the TCP do

A

Dictates how devices connect on the network
In charge of splitting data into packets and reassembling back into the original data onve they have reached the original device
Responsible for checking the data is correctly sent and delivered

90
Q

What does IP stand for

A

Internet protocol

91
Q

What does the IP do

A

Direct packets to their destination across the network

92
Q

What does HTTP stand for

A

Hyper text transfer protocol

93
Q

What does HTTP stand for

A

Hyper text transfer protocol

94
Q

What is the http used for

A

To access websites and communicate with web servers and is used by web browsers

95
Q

What is the http used for

A

To access websites and communicate with web servers and is used by web browsers

96
Q

What does https stand for

A

Http secure

97
Q

What is https used for

A

A secure version of http so it encrypts all information sent and received

98
Q

What is https used for

A

A secure version of http so it encrypts all information sent and received

99
Q

What does ftp stand for

A

File transfer protocol

100
Q

What is ftp used for

A

To access, edit and move files between devices on a network

101
Q

What does pop stand for

A

Post office protocol

102
Q

What is pop3 used for

A

To retrieve emails from a server. The server holds the email until you retrieve it and then it is deleted

103
Q

What does imap stand for

A

Internet message access protocol

104
Q

What is imap used for

A

To retrieve emails from a server and the original is kept on the mail server

105
Q

What is smtp used for

A

To send emails and transfer them between servers

106
Q

What does smtp stand for

A

Simple mail transfer protocol

107
Q

What is a layer

A

A group of protocols which have similar functions

108
Q

What do layers do

A

The hidden work needed for an action in the layer above

109
Q

How is data passed between layers

A

Between adjacent layers

110
Q

What are divided into layers

A

Network protocols

111
Q

What is layer 4

A

Turning data into websites and other applications and vice versa

112
Q

What are the protocol examples of layer four

A

Http, smtp and ftp

113
Q

What is layer 3

A

Splitting data into packets and checking data is sent and delivered

114
Q

What are the protocol example of layer three

A

TCP

115
Q

What is layer 2

A

Making connections between networks and directing data

116
Q

What are the protocol examples of layer two

A

IP

117
Q

What is layer one

A

Passing data over the physical network

118
Q

What are the protocols of layer one

A

Ethernet

119
Q

What are the advantages of layers

A

It breaks network communication into manageable pieces
As layers are self contained they can be changed without the others being affected

120
Q

What is the internet

A

A network of networks over the world

121
Q

What is the World Wide Web

A

A collection of websites that are hosted on web servers and accessed through the http protocol

122
Q

What is a URL

A

An address used to access web servers and resources on them

123
Q

What does DNS stand for

A

Domain name service

124
Q

What is the DNS used for

A

To translate website domain names into ip addresses so you don’t need to remember ip addresses

125
Q

What is hosting

A

When a business uses its servers to store files of another organisation

126
Q

What is the traditional use of the internet

A

To host websites on web servers

127
Q

What is the traditional use of the internet

A

To host websites on web servers

Computer Science (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions