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Computer Science > Network Topologies > Flashcards

Network Topologies Flashcards

Star, Bus Networks

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1
Q

What is a node?

A

Any device connected to a network

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2
Q

What is a topology?

A

The arrangement or pattern, nodes in a network are connected in.

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3
Q

How are nodes arranged in a Bus topology?

A

All nodes are directly connected to the central cable.

       ●               ●
        |                  |
○----------------------------○
                  |               |
                 ●            ●
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4
Q

How are nodes arranged in a Star topology?

A

All of the nodes are indirectly connected to each other through a central switch

●                         ●
     \                   /
          switch
      /                  \
  ●                      ●
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5
Q

What is a switch?

A

A device that connects computers or other network capable devices together to form a network

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6
Q

What is a WAP?

A

A wireless access point - A device that connects computers to a network using Wi-Fi

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7
Q

Where can Star networks be found other than large organisations?

A

Home networks, especially wireless ones

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8
Q

Why are Start topologies found in large organisations?

A

Because they have high performance

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9
Q

What is Transmission Media?

A

How data is carried from point A to point B physically either by cable or wirelessly

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10
Q

What is a disadvantage of Star topology?

A

If the switch fails, the whole network fails

or

It requires lots of cabling so it can quite expensive especially in large networks

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11
Q

What is an advantage of a Star topology?

A

Each node is connected separately so if one node or link fails, the other nodes are not affected

or

New nodes can be easily added by connecting them to a switch

or

Higher performance as a message is only passed to its intended node

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12
Q

What does a server require?

A

Server software

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13
Q

What is a server?

A

A computer that holds data to be shared with other computers

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14
Q

In a Star topology, where do all of the communications pass through?

A

The hub/switch

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15
Q

How are large networks using a Star topology usually controlled?

A

Through the use of one or more servers

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16
Q

What is a switch?

A

A device for connecting computers and other network capable devices together to form a network

17
Q

Ina Star topology, what connects all of the nodes together?

A

A hub/switch

18
Q

Why might a bus network be used as a temporary network?

A

They are small and cheap to install

or

High speed data transfers are not necessary if the network is temporary

19
Q

Why are bus topologies not widely used?

A

They are not suited to dealing with large amounts of data

20
Q

What is a disadvantage of a Bus topology?

A

The whole network fails if the backbone is broken

or

Terminators must be installed at both ends of the backbone

or

Having one central cable increases chances of data collisions

21
Q

What is an advantage of a Bus topology?

A

It is easy to connect new nodes

or

Less cabling is needed than Star, making it cheaper to install

22
Q

What two ways can nodes be connected to a network?

A

By wire or wirelessly

23
Q

How is data sent around a Bus topology?

A

Data is sent up and down the backbone until it reaches the correct node

24
Q

In a Bus topology, how are nodes connected to the network?

A

All of the nodes are connected directly to the backbone

25
Q

What is a terminator?

A

A device that terminates signals to prevent them from reflecting back down the cable

26
Q

What must be installed to both ends of the central cable on a Bus network?

A

Terminators

27
Q

What is the central cable on a Bus network called?

A

Backbone cable

28
Q

Name two network topologies

A

Star and Bus

29
Q

What is a network topology?

A

The arrangement in which all nodes on a network are connected together

30
Q

What is a node?

A

Any device connected to a network

31
Q

Define a network

A

A group of connected computers that can communicate with each other

Computer Science (4 decks)

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