Brainscape's Knowledge GenomeTM

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


See full index

Computer Science IGCSE > Networks > Flashcards

Networks Flashcards

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

Explain what is meant by LAN

A

network used for a small geographical area

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

Explain what is meant by WAN
(explain why each example given is for WAN)

A

Network used on a large geographical area
(cloud storage, instant messaging)

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

Explain what is meant by VLE

A

A Virtual Learning Network (firefly)

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

Explain what is meant by Network

A

Connection of devices used to share and communicate resources

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

Explain what is meant by Internet

A

Global connection of devices used to communicate and share data

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

Explain what is meant by VPN

A

Virtual Personal Network
Protects the user by encrypting personal data

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

What are VPN’s used for?

A

Security
(Often used by companies to keep their employees safe when in abroad offices)

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

Explain what is meant by Protocol

A

A set of rules used to control how devices operate in a network

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

Explain what is meant by IP Address

A

A unique set of numbers used to identify a device in a network

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

Explain what is meant by Upload

A

When data files are being sent to the cloud

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

Explain what is meant by Download

A

When data files are being received from the cloud

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

Describe the benefits of connecting devices to a network (individuals)

A

Instant access, send instant messages

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

Describe the benefits of connecting devices to a network (organization)

A

Improves collaboration and central data hub that everyone can access

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

Describe the benefits of connecting devices to a network (society)

A

Individuals can access resources, healthcare services, and gov. info

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

Explain what is meant by WPAN

A

Wireless Personal Area Network
Network of personal devices connected individually.

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

Give an example of IPV4 Address

A

192.168.2.146

17
Q

Explain what is meant by Bandwidth

A

The amt. of data that can be carried by a connection in one second

18
Q

Explain what is meant by Lantency

A

The delay between data being sent and received

19
Q

What causes Latency?

A

Data packets collide on the same route in a network

20
Q

You are trying to send a large video file to your friend, but it takes a long time to load. In the end, the file doesn’t go through, and Whatsapp asks you to re-send it.

Suggest what is happening in terms of data packets. [5]

A

• Large video file -> large file size
• Large file size -> latency
• Data packets are separated in the network on different routes (to reach your friend)
• Data packets are labeled in order
• Your friend’s phone will have to re-order the (correctly)
• Some data packets are lost
• App asks for re-send because not all packets were transferred

21
Q

Suggest a method to decrease latency [1]

A

• Increase bandwidth
• Decrease file size

22
Q

Describe a Packet Switch Network. [3]

A

• Data is broken up into packets
• router searches for shortest route

23
Q

Describe a Circuit Switch Network [3]

A

• Old Network
• Send digital messages across a network
• Operated by Telephone exchanges
• Connections made with wires

24
Q

State the formula for file size, transmission speed, and speed (with units)

A

• File size = transmission speed * time

• bits = bps * sec.

25
Q

State what is meant by WAP. [2]

A

• provides wireless access to a (wired) network
• does NOT provide internet access

26
Q

State what is meant by Router. [2]

A

• moves data from one network to another
• connects a network to the internet

27
Q

State what is meant by Switch. [2]

A

• connects data to the correct (wired) device
• required a network with multiple wired connections

28
Q

State what is meant by Hub. [2]

A

• (copies and sends) incoming data to all other connected devices
• connects multiple wired devices together

29
Q

State what is meant by NIC. [2]

A

• Network Interface Card
• enables a wired network connection
• (between) a computer and another networked device

30
Q

State what is meant by Bridge. [2]

A

• helps reduce traffic by segmenting network
• (connects) a LAN to a LAN

31
Q

State what is meant by MAC Address. [2]

A

• Media Access Control address
• unique physical address
• used to locate devices (in a network)

Computer Science IGCSE (3 decks)

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