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Computer Science GCSE OCR J277 > 1.3 Computing Networks, Connections and Protocols > Flashcards

1.3 Computing Networks, Connections and Protocols Flashcards

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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
Q

What are the advantages of a star topology?

A
  • Damages only affect specific nodes
  • Handles heavy loads
  • Easily add new nodes
26
Q

What are the disadvantages of a star topology?

A
  • Central node is a single point of failure
  • Expensive
27
Q

What is a bus topology?

A
  • Nodes connected to a single cable
  • Terminators at either end
28
Q

What are the advantages of a bus topology?

A
  • Cheap
  • Simple
  • Good for small networks
29
Q

What are the disadvantages of a bus topology?

A
  • If the main cable fails the whole network fails
  • Unsecure
  • Bad for heavy loads
30
Q

What is a ring topology?

A
  • Nodes connected in a ring
  • Data moves one direction
31
Q

What are the advantages of a ring topology?

A
  • Less chance for data collision
  • Additional nodes have minimal impact on performance
32
Q

What are the disadvantages of a ring topology?

A
  • 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
Q

What is a mesh topology?

A
  • Nodes connected to at least one other node
34
Q

What are the advantages of a mesh topology?

A
  • No single point of failure
  • Efficient
  • Works well under heavy loads
  • Easy to add new nodes
35
Q

What are the disadvantages of a mesh topology?

A
  • Expensive
  • Complicated
36
Q

What are examples of wired transmission media?

A
  • Copper cable
  • Fibre optic
37
Q

What are examples of wireless transmission media?

A
  • Bluetooth
  • WiFi
38
Q

How does copper cable transmit data?

A
  • Electrical pulses
39
Q

How does fibre optic transmit data?

A
  • Light pulses
40
Q

How does Wi-Fi and Bluetooth transmit data?

A
  • Radio signals
41
Q

What are the advantages to copper cables?

A
  • Cheaper
  • Stable
42
Q

What are the disadvantages to copper cables?

A
  • Disturbances
  • Slower
  • Short distances
43
Q

What are the advantages of fibre optic?

A
  • Fast
  • Long distances
  • Stable
44
Q

What are the disadvantages of fibre optic?

A
  • Expensive
45
Q

What are the advantages of WiFi?

A
  • Large range
  • Multiuser
  • Mobility
  • Cheaper
46
Q

What are the disadvantages of WiFi?

A
  • Unsecure
  • Unreliable
  • Decreases as more users
47
Q

What are the advantages of Bluetooth?

A
  • Low cost
  • Low power
48
Q

What are the advantages of bluetooth?

A

Computer Science GCSE OCR J277 (9 decks)

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