Brainscape's Knowledge GenomeTM

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


See full index

Computing > 1.3.1 - Networks and Topologies > Flashcards

1.3.1 - Networks and Topologies Flashcards

1
Q

What is a Network?

A

Two or more computers that are connected together for the purpose of communicating data

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

What are the advantages of networking?

A
  • Users can share files and can access their files from any computer on the network
  • Users can share peripherals; printers and connections to other networks
  • Severs can control security, software updates and backup of data
  • Communication with other people
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is LAN?

A
  • Local Area Network
  • Covers a small area on a single site
  • All hardware for a LAN is owned by the user
  • Wired with UTP cables, fibre optic or wireless using wifi
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is a WAN?

A
  • Wide area network
  • Covers a large area, connecting LANs together
  • Infrastructure between the LANs is leased from telecommunication companies who own/manage it
  • Connected by telephone lines, fibre optic cables or satellites
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the disadvantages of networking?

A
  • Increased security risk to data
  • Malware and viruses spread easier between computers
  • If a server fails, computers connected may not work
  • Computers may run slower if a lot of data is travelling the network
  • Expensive
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is a WAP?

A

Wireless Access Point
- Networking hardware that allows a Wi-Fi device to connect to a wired network

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

What is an NIC?

A

Network Interface Controller/Card
- A hardware component that connects a computer to a computer network

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

What is a client server model?

A

A Server:
- Controls access and security to one shared file store
- Manages internet access and printing jobs
- Provides email services
- Runs data backups

  • A client makes requests to the server for data and connections
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Define “client”

A

A device that makes requests to a server for data and connections

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

What are the advantages of a client-server model?

A
  • Easier to manage files, take backups of all shared data & install software updates to all computers
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the disadvantages of a client-server model?

A
  • Can be expensive to set up/maintain
  • Requires IT specialists to maintain
  • The server is a single point of failure
  • Users lose access if server fails
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is a peer to peer model?

A
  • A peer is a computer on a network and is equal to all other peers
    Peers:
  • Send their own files to each other
  • Responsible for its own security/backups
  • Usually have their own printers
  • Can send print jobs to other peers to process, however they must be turned on
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the advantages of a peer to peer model?

A
  • Easy to maintain
  • Specialist staff aren’t required
  • No dependency on a single computer
  • Cheaper
  • No expensive hardware needed
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the disadvantages of a peer to peer model?

A
  • Less secure network
  • Users need to manage their own backups
  • Difficult to maintain a well ordered file store
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is bandwidth?

A
  • The amount of data that can be sent and received successfully in a given time
  • Not a measure of how fast data travels, but how much data can be sent
  • Measured in bits per second, often called bit rate
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How can the number of users affect the performance of a network?

A
  • Too many users/devices can cause the network to slow down if there is insufficient bandwidth
17
Q

What is Transmission Media?

A

The physical media over which data is transmitted

18
Q

How does transmission media affect the network performance?
(physical)

A
  • Wired connections have a higher bandwidth than wireless
  • Fibre optic cables have a higher bandwidth than copper cables
19
Q

How can the error rate affect the network?

A
  • Less reliable connections increase the number of errors that occur when data is transferred, meaning it has to be resent until it arrives
  • The quality of the connections depends on the range of devices & other environmental factors
20
Q

How can latency affect a network?

A
  • Latency is the delay from transmitting data to receiving it, caused by bottlenecks in the infrastructure
    eg. not using switches to appropriately segment traffic
21
Q

What is the internet?

A

A global collection of interconnected networks

22
Q

What is a Domain Name Service?

A
  • Converts web addresses to IP addresses for a router
  • Process is carried out by the service, which is made up of multiple Domain Name Servers
23
Q

What is a DNS?

A
  • Domain Name Server
  • Matches the URL of a website into an IP address of a web server
24
Q

What is hosting?

A

Stored websites in servers for a dedicated purpose (DNS converting)

25
Q

What is the cloud storage?

A

Servers that store data and programs remotely that can be accessed and used over the internet
Provide access to anything, anywhere, an auto backup and collab of documents

26
Q

What is a Router?

A

A device for connecting devices on a wide area network

27
Q

What are Web Servers & Clients?

A
  • Web Servers provide services (eg Server -> Web Pages, File server -> File storage)
  • Clients request/use services from a server
28
Q

What are the advantages & disadvantages of a Star Network Topology?

A

A:
- The switch makes sure traffic only goes where it is intended
- If a single cable breaks only that computer is affected
D:
- The switch is a serious point of failure

29
Q

What are the advantages & disadvantages of a Mesh Network Topology?

A

A:
- If you break any connections the traffic can be rerouted
D:
- Lots more cabling & switch hardware required - adds to cost

30
Q

What is a Partial Mesh Topology?

A
  • Where multiple routes exist between different devices but not every device is connected to every other device
  • Compromise that lowers hardware needed for a full mesh topology
31
Q

What is a Mesh Topology?

A

Nodes connected so there is more than one route to the destination

32
Q

What is a Star Topology?

A

A network where each node is connected to a central router or switch

33
Q

What is a Switch?

A

Uses the MAC address to route traffic (frames) to the correct connected device
Connects devices on a local area network

Computing (17 decks)

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