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ICT > Networks > Flashcards

Networks Flashcards

1
Q

What are the disadvantages of a tablet? (two)

A

Depend on Wi-fi to connect to the Internet (Wi-fi is less reliable and less secure than a wired connection)
Small screens may means content may not display as well as on a laptop or a desktop PC

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2
Q

Authentification

What does this describe?

Used with emails to check they are authentic
This means they are checked to make sure they came from the person they appear to be from

A

Digital signatures

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3
Q

What are the features o an IP address?

A

All computers and devices connected to the Internet are allocated a unique number called an IP address

The IP address determines its exact location

Computers on the same network have the same first few numbers

Computers on the same network are uniquely identified by the last few numbers of their IP addresses

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4
Q

What is VoIP an example of?

A

A communication method over a network

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5
Q 
What are these?
Hardware
Software
Data
An Internet connection
A

Shared resources on a network

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6
Q

What are five features of a LAN?

A 
Confined to a small area 
Usually located in a single building 
Use cable, wireless, infrared and microwave links that are usually owned by the organization 
Cheap to build
Cheap to run
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7
Q

What are three advantages of using a laptop?

A

More portable than a desktop
Good sized screens and keyboards
Can be used when not placed on a flat surface

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8
Q

What does a network interface card do?

A

prepares data for sending over the network
sends the data
controls the flow of data

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9
Q

What are these features of?

Telephone lines are used to connect devices on the Internet
Telephone lines were designed s carry analogue signals like the human voice
Computers work in digiatal
Modems convert digital computer signals to analogue so they can be transmitted and analogue to digital so computer can understand it

A

a modem (modulator / demodulator)

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10
Q

What do we call two or more computers that are linked together so that they are able to share resources

A

a network

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11
Q

What is a network?

A

A network is two or more computers that are linked together so that they are able to share resources

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12
Q

What is SMS usually known as?

A

Texting

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13
Q

What are three advantages of a desktop pc?

A

1) Web page is displayed fully as most web pages are designed to be viewed on a desktop
2) Larger keyboards make it easier to type
3) Larger screens provide a better viewing experience

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14
Q 
What are these?
Confined to a small area 
Usually located in a single building 
Use cable, wireless, infrared and microwave links that are usually owned by the organization 
Cheap to build
Cheap to run
A

five features of a LAN

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15
Q

R______ connects to the I______t via an I__

A

Router connects to the Internet via an ISP

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16
Q

What allows computers and devices to connect wirelessly using signals that are broadcast using radio waves?

A

wi fi

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17
Q

What does this represent?

Firewall
Anti-virus
Web browser
Email account

You will also need an ISP (to connect to the Internet)

A

software is needed to set up a small network

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18
Q

What are five features of a WAN?

A

Cover a wide geographical area (e.g., between cities, countries and even continents)
In lots of different buildings and cities, countries, etc.
Use more expensive telecommunication links that are supplied by telecommunication companies
Expensive to build
Expensive to run

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19
Q

What are these?

A computer or a device

A wireless network interfae card (standard )

Access to a wireless hotspot

A

the things you need to connect to a wi fi network

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20
Q

What is VoIP?

A

Voice over Internet Protocol – used to make cheap phone calls over the Internet

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21
Q

To use Wi-Fi you need access to a r_____ and the I______

A

To use Wi-Fi you need access to a router and the Internet

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22
Q

What determines the exact location of a computer?

A

IP address

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23
Q

What Hardware required to set up a small network? (6 things)

A

Computers or devices (laptop, desktop PC, tablet)
Printer/ scanner
Router
Network interface cards (wired or wireless)
Network cabling
Telephone/ cable line to connect to Internet

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24
Q

Comparing wifi and Bluetooth:

What has the best signal range?

A

Wifi

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25
Q

Comparing wifi and Bluetooth:

which can have the most number of devices connected?

A

wifi

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26
Q

What are used to check who is using a network?

A

User-ID/username – used to allocate programs, settings, storage area and files
Password – used to ensure the person who is using the network is genuine

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27
Q

What are the features of a router?

A

can be wired or wireless
is used to join several networks together
is often used to connect several computers in the home to the Internet
‘Intelligent’ device
read data and decide where to send it
chooses the best route to transmit data on network
To do this it makes use of IP addresses

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28
Q

What are the advantages of a tablet? (two)

A

Small and light so very portable

Screens and keyboards are larger than on a smartphone making them easier to use/ view content

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29
Q

What does this describe?

Uses radio waves to transfer data over distances between 1 and 100 metres
Class 1 – up to 100m
Class 2 – up to 10m
Class 3 – up to 1m

A

Bluetooth?

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30
Q

What are these for?

User-ID/username – used to allocate programs, settings, storage area and files
Password – used to ensure the person who is using the network is genuine

A

They are used to check who is using a network

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31
Q

What do modems do?

A

Modems convert digital computer signals to analogue so they can be transmitted and analogue to digital so computer can understand it

32
Q

What is this a list of?

Computers or devices (laptop, desktop PC, tablet)
Printer/ scanner
Router
Network interface cards (wired or wireless)
Network cabling
Telephone/ cable line to connect to Internet

A

Hardware required to set up a small network

33
Q

Comparing wifi and Bluetooth:

What has the best signal reliability?

A

Bluetooth

34
Q

Comparing wifi and Bluetooth:

what has the best (lowest) power usage?

A

bluetooth

35
Q

How do you fit all of the software and hardware together to make a small network? (six things)

A

Sign up and pay for an account with an ISP (they will provide a router/ modem)
Connect the router to the telephone or cable line
Connect cabled devices to the router using the network cable – plugs into NIC on the devices and the ports on the router
Connect wireless devices to the router using Wi-Fi(password supplied by ISP)
Install firewall and anti-virus software on each device that will be on the network
Configure the router using Internet login details supplied by the ISP

36
Q

What does this describe?

Codes files before sending over the Internet
If they are intercepted by hackers the data cannot be understood
Used for secure sending of banking/credit card details

A

Encryption

37
Q

What are four devices used to access the internet?

A

Desktop PC
Laptop
Tablet
Smartphone

38
Q

What does encryption do? (3 things)

A

Codes files before sending over the Internet
If they are intercepted by hackers the data cannot be understood
Used for secure sending of banking/credit card details

39
Q

Computers on the same network have the same first few numbers

Computers on the same network are uniquely identified by the last few numbers of their what?

A

IP address

40
Q

What are some shared resources on a network?

A

Hardware – printers, scanners, storage, etc.
Software – need only be installed on one computer
Data (e.g., database files)
An Internet connection

41
Q

What are the three advantages of a smartphone?

A

Small size makes it highly portable
Internet can be accessed from anywhere with a Wi-fi or mobile data signal
Most people carry a mobile phone with them so they have internet access at any time

42
Q

What type of computer offers these advantages?

More portable than a desktop
Good sized screens and keyboards
Can be used when not placed on a flat surface

A

A laptop

43
Q

What are these?
Cover a wide geographical area (e.g., between cities, countries and even continents)
In lots of different buildings and cities, countries, etc.
Use more expensive telecommunication links that are supplied by telecommunication companies
Expensive to build
Expensive to run

A

five features of a WAN

44
Q

What are the five disadvantages of a smartphone?

A

Small screen size can make it difficult to view the content
Small keyboard can make it difficult to use
Make it difficult for parents to monitor content viewed by children
Children may be exposed to unsuitable content
Expense

45
Q

What is a disadvantage of using a desktop pc?

A

Restricted to one location as desktops are not portable.

46
Q

What is a disadvantage in using a laptop?

A

Processors not as powerful as a desktop

47
Q

What does this?
prepares data for sending over the network
sends the data
controls the flow of data

A

a network interface card

48
Q

What is a switch?

A

is a similar device to a hub but more ‘intelligent’
can look at a packet of data to decide where it should go
It does this using Mac Addresses which uniquely identify an individual device on a LAN

49
Q

R_____ can only broadcast the w______ signal over a limited distance. Typical limits are between ?m and ?m

A

Routers can only broadcast the wireless signal over a limited distance. Typical limits are between 50m and 100m

50
Q

What does the following describe?

Computer or device with Bluetooth technology
Bluetooth needs to be turned on using settings on the device
Device scans for other Bluetooth devices in range
Send a request to join/ pair
Once paired data can be shared between the devices (when in range)

A

what you need to connect to a Bluetooth network

51
Q

What is an example of a communication method over a network?

A

Voice over Internet Protocol / VoIP – used to make cheap phone calls over the Internet

52
Q

Authentification

What are digital signatures used for?

A

Used with emails to check they are authentic

This means they are checked to make sure they came from the person they appear to be from

53
Q

C_____ networks are faster and more secure than w_______

A

Cabled networks are faster and more secure than wireless

54
Q

Comparing wifi and Bluetooth:

What has the best security?

A

wifi

55
Q

What are these features of?
is used to join computers in a network
allows the connection of cables
allows the sharing of files and Internet access
not ‘intelligent’
data is broadcast to all devices on the network

The network will therefore be slow

A

Hub

56
Q

To connect to a Bluetooth network the following is needed

?

A

Computer or device with Bluetooth technology
Bluetooth needs to be turned on using settings on the device
Device scans for other Bluetooth devices in range
Send a request to join/ pair
Once paired data can be shared between the devices (when in range)

57
Q

What does this describe?
???? convert digital computer signals to analogue so they can be transmitted and analogue to digital so computer can understand it

A

Modem (Modulator/ demodulator)

58
Q

What are these features of?

can be wired or wireless
is used to join several networks together
is often used to connect several computers in the home to the Internet
‘Intelligent’ device
read data and decide where to send it
chooses the best route to transmit data on network
To do this it makes use of IP addresses

A

Router

59
Q

What kind of computer offers these advantages and disadvantages?

advantages
Small and light so very portable
Screens and keyboards are larger than on a smartphone making them easier to use/ view content

Disadvantages:
Depend on Wi-fi to connect to the Internet (Wi-fi is less reliable and less secure than a wired connection)
Small screens may means content may not display as well as on a laptop or a desktop PC

A

tablet

60
Q

What does a hub do?

A

is used to join computers in a network
allows the connection of cables
allows the sharing of files and Internet access
not ‘intelligent’
data is broadcast to all devices on the network

The network will therefore be slow

61
Q

What are features of a modem (modulator / demodulator)

A

Telephone lines are used to connect devices on the Internet
Telephone lines were designed s carry analogue signals like the human voice
Computers work in digiatal
Modems convert digital computer signals to analogue so they can be transmitted and analogue to digital so computer can understand it

62
Q

To connect to a Wi-Fi network the following is needed???? (3 things)

A

A computer or a device

A wireless network interfae card (standard )

Access to a wireless hotspot

63
Q

R_______ are used to provide a h______t to allow devices to c_______ to the Internet

A

Routers are used to provide a hotspot to allow devices to connect to the Internet

64
Q

Comparing wifi and Bluetooth:

What has the fastest data speeds?

A

Wifi

65
Q

What are these?

To allow devices like keyboards, mice, speakers and printers to be connected without the need for wires

Sharing mobile phone data between devices eg: contacts

Connecting to hands-free headsets – allows mobile phones to be used when driving

A

three uses of Bluetooth

66
Q

what Allows multiple devices to share the same Internet connection
?

A

wi fi

67
Q

How does Bluetooth work?

A

Uses radio waves to transfer data over distances between 1 and 100 metres
Class 1 – up to 100m
Class 2 – up to 10m
Class 3 – up to 1m

68
Q

Areas where computers and devices can access the Internet are known as h________?

A

Areas where computers and devices can access the Internet are known as hotspots

69
Q

What does this list show?
Sign up and pay for an account with an ISP (they will provide a router/ modem)
Connect the router to the telephone or cable line
Connect cabled devices to the router using the network cable – plugs into NIC on the devices and the ports on the router
Connect wireless devices to the router using Wi-Fi(password supplied by ISP)
Install firewall and anti-virus software on each device that will be on the network
Configure the router using Internet login details supplied by the ISP

A

How do you fit all of the software and hardware together to make a small network

70
Q

What software is needed to set up a small network? (four things)

A

Firewall
Anti-virus
Web browser
Email account

You will also need an ISP (to connect to the Internet)

71
Q

All computers and devices connected to the Internet are allocated a unique number called an ???

A

IP address

72
Q

What type of computer offers these advantages?

1) Web page is displayed fully as most web pages are designed to be viewed on a desktop
2) Larger keyboards make it easier to type
3) Larger screens provide a better viewing experience

A

Desktop PC

73
Q

What are these a feature of?

is a similar device to a hub but more ‘intelligent’
can look at a packet of data to decide where it should go
It does this using Mac Addresses which uniquely identify an individual device on a LAN

A

Switch

74
Q

What is WPAN (Wireless personal area network) known as?

A

Bluetooth

75
Q

What are these features of?

All computers and devices connected to the Internet are allocated a unique number called an IP address

The IP address determines its exact location

Computers on the same network have the same first few numbers

Computers on the same network are uniquely identified by the last few numbers of their IP addresses

A

IP address

76
Q

What are three uses of Bluetooth?

A

To allow devices like keyboards, mice, speakers and printers to be connected without the need for wires

Sharing mobile phone data between devices eg: contacts

Connecting to hands-free headsets – allows mobile phones to be used when driving

ICT (9 decks)

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