1.3 Computing Networks, Connections and Protocols Flashcards

1
Q

What is a computing network?

A
  • A group of two connected computers or more
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2
Q

What is a graph?

A
  • A diagram to display connections
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3
Q

What is a client?

What is a server?

A
  • The client requests actions from the server.
  • The server responds to the requests of the client.
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4
Q

What is a node?

What is an edge?

A
  • Circles on a graph representing connections
  • Lines on a graph representing connections
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5
Q

What are the advantages of using a network?

A
  • Efficient
  • Data openable across devices
  • Data uploadable across devices
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6
Q

What are the disadvantages of using a network?

A
  • Expensive
  • Specialist management
  • Cyber attacks
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7
Q

What is a peer-to-peer network?

A
  • Devices can act as both the client and server
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8
Q

What are advantages of the peer-to-peer network?

A
  • Cheap
  • Efficient
  • Non dependant on a server
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9
Q

What are the disadvantages of the peer-to-peer network?

A
  • No backup system
  • No security
  • Overloading of requests
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10
Q

What is a client-server network?

A
  • Clients make requests to a server
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11
Q

What are the advantages of the client-server network?

A
  • Multiple requests
  • Central storing
  • Easy backups
  • Easy maintance
  • A client computer breaking wouldn’t effect the network
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12
Q

What are the disadvantages of the client-server network?

A
  • Expensive
  • Specialist management
  • If the server fails, everyone is disrupted
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13
Q

What is a PAN?

A
  • Personal area network
  • Single user with multiple connected devices
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14
Q

What is a LAN?

A
  • Local area network
  • Multi-user network with multiple connected devices
  • Owned by a small organisation
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15
Q

What is a WAN?

A
  • Wide area network
  • Multiple LANS connected together
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16
Q

What is a WAP?

A
  • Wireless access point
  • Provides wireless access to the internet
  • Sometimes built into router
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17
Q

What is a router?

A
  • Moves data from one network to another
  • Commonly used to connect to internet
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18
Q

What is a switch?

A
  • Wired connection of devices
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19
Q

What is a hub?

A
  • Wired connection of devices
  • Data is broadcasted
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20
Q

What is a NIC?

A
  • Network interface card
  • Enables connections between devices
21
Q

What is a bridge?

A
  • Connects a LAN to another LAN
  • Reduces internet traffic
22
Q

What is a MAC?

A
  • Media access control
  • Used to identify devices in a network
23
Q

What is a topology?

A
  • A type of arrangement in a network design
24
Q

What is a star topology?

A
  • Central node with all other nodes connected to it
25
What are the advantages of a star topology?
- Damages only affect specific nodes - Handles heavy loads - Easily add new nodes
26
What are the disadvantages of a star topology?
- Central node is a single point of failure - Expensive
27
What is a bus topology?
- Nodes connected to a single cable - Terminators at either end
28
What are the advantages of a bus topology?
- Cheap - Simple - Good for small networks
29
What are the disadvantages of a bus topology?
- If the main cable fails the whole network fails - Unsecure - Bad for heavy loads
30
What is a ring topology?
- Nodes connected in a ring - Data moves one direction
31
What are the advantages of a ring topology?
- Less chance for data collision - Additional nodes have minimal impact on performance
32
What are the disadvantages of a ring topology?
- Multiple single points of failure - Unsecure - To add new nodes, whole network needs to be shut down - Slow as the slowest two nodes in the network
33
What is a mesh topology?
- Nodes connected to at least one other node
34
What are the advantages of a mesh topology?
- No single point of failure - Efficient - Works well under heavy loads - Easy to add new nodes
35
What are the disadvantages of a mesh topology?
- Expensive - Complicated
36
What are examples of wired transmission media?
- Copper cable - Fibre optic
37
What are examples of wireless transmission media?
- Bluetooth - WiFi
38
How does copper cable transmit data?
- Electrical pulses
39
How does fibre optic transmit data?
- Light pulses
40
How does Wi-Fi and Bluetooth transmit data?
- Radio signals
41
What are the advantages to copper cables?
- Cheaper - Stable
42
What are the disadvantages to copper cables?
- Disturbances - Slower - Short distances
43
What are the advantages of fibre optic?
- Fast - Long distances - Stable
44
What are the disadvantages of fibre optic?
- Expensive
45
What are the advantages of WiFi?
- Large range - Multiuser - Mobility - Cheaper
46
What are the disadvantages of WiFi?
- Unsecure - Unreliable - Decreases as more users
47
What are the advantages of Bluetooth?
- Low cost - Low power
48
What are the advantages of bluetooth?