Network Topology Flashcards

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1
Q

Physical Topology

A

Layout of the wires in a network

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2
Q

Logical Topology

A

How data flows in the network

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3
Q

Advantages of a physical bus network

A
  • Easy to extend
  • Efficient use of cable
  • Good for small networks
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4
Q

Disadvantages of a physical bus network

A
  • Network slows if there is a lot of traffic
  • Problems are hard to isolate
  • Main cable breaking breaks whole system
  • Data collisions occur as data travels both ways
    Limited cable length restricts number of devices
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5
Q

Advantages of a physical star network

A
  • Adding new devices is easy
  • Failure of one device does not cause network to fail
  • Easy to find faults
  • Improved security
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6
Q

Disadvantages of a physical star network

A
  • If centralised point fails the whole network fails
  • Hub can be expensive
  • More cable needed
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7
Q

Advantages of a physical ring topology

A
  • Orderly

- Performs better than a bus network under heavy network load

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8
Q

Disadvantages of a physical ring topology

A
  • One malfunction creates problems for the whole network
  • Moving/ adding/ changing devices causes issues
  • Slower than ethernet usually
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9
Q

Advantages of a physical mesh topology

A
  • Gets rid of traffic problems ad each connection carries its own load
  • If one link is unstable system still works
  • security advantage
  • Fault identification is easy
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10
Q

Disadvantages of a physical mesh topology

A
  • Lots of cabling and I/O ports needed
  • Bulk of wiring can be greater than space you have
  • Expensive
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11
Q

Hub

A

Data from 1 port is broadcast to all other ports

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12
Q

Switch

A

data packets from 1 port are sent to only the destination

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13
Q

MAC address

A
  • Each networked device a Network Interface Card
  • Each NIC has a unique Media Access Control address
  • MAC is hardcoded at manufacture
  • MAC addresses are 48 bits long
  • Written as 12 Hexadecimal digits
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