1.4 wired and wireless networks

1. What are two advantages of networking computers?

• It is easy to share documents. Different users are able to work on the same document at once. • Only one internet connection is required as it can be shared between every device connected to the network.

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part 2 networking computer advantages

• Centralised backups can be carried out automatically. • Software updates / patches can be automatically pushed out by the server to ensure that all devices are up to date. • Users can log in to any machine connected to the LAN as accounts are store

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2. What does WAN stand for?

Wide Area Network.

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3. What is the definition of ‘bandwidth’?

Bandwidth is the amount of data that can be transmitted …in a given period of time.

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4. What does the acronym mbps stand for?

Megabits Per Second.

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5. Using the LOR framework, write about the impact that bandwidth can have on the performance of a network. In your answer you might consider: • The speed of the network • The type of media being accessed. • The number of users.

The amount of available bandwidth has a major impact on the performance of a network. The larger the amount of available bandwidth that is available the more data that can be transmitted in a given period of time. ......

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6. What are the differences and similarities between a LAN and a WAN?

A LAN covers a small geographical area whereas a WAN covers a wide geographical area. All of the telecommunications equipment used in a LAN is owned by the organisation whereas a telecommunications company provides infrastructure for a WAN.

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7. A large supermarket chain is setting up a new client server network. What is meant by the term ‘client server network’?

All devices are connected to a central server. The central server receives and processes requests from ‘clients’. The server stores user account details and files.

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8. You plan to use a peer network model for a business. Describe two reasons why you have chosen this network model.

• All devices have equal status, there is no central server which makes them relatively easy to maintain. • There is no dependence on the server. If one device fails only the information stored on that device will be inaccessible. ......

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10. What is the purpose of a router?

To transmit data …between at least two different networks.

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11. What does DNS stand for?

Domain Name System.

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13. Many fast broadband connections use fibre optic cable instead of copper. What are two reasons why fibre optic cable is the preferred choice?

• Fibre optic cables transmit data through light so do not suffer from electrical interference. • Data can be transmitted over very large distances without any loss of signal quality. • They are able to transmit data at a higher bandwidth.

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14. Why is using cloud computing useful to some businesses?

• Any user within the business will be able to load up the files on any device in any location as long as they have a data connection and the necessary permission. • If they runs out of storage capacity it is easy to increase. .....

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15. What is meant by the term ‘virtual network’?

A virtual network is part of a LAN or WAN ….which is configured so that only certain devices can see each other ….and is implemented using network virtualisation methods.

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16. What is meant by the tern VPN?

A Virtual Private Network ….that can be used to send data securely over a WAN.

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17. You have a games console in your bedroom and a video streaming device in your lounge. You use both devices to watch movies. The Wireless Access Point is located in the lounge. You have found that you are able to stream movies at a far higher qual

The further the device is from the WAP the weaker the signal will be ….so the lower the bandwidth will be. Objects such as walls and doors will reduce the signal strength. Other electrical devices could reduce the signal strength and interfere w...

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18. Place the following types of cables into order of speed, from slowest to fastest. • Cat 5e • Cat 6 • Fibre Optic • Cat 5

• Cat 5 • Cat5e • Cat 6 • Fibre Optic

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A peer-to-peer network has one central controlling computer.TRUE?FALSE?

false

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Peer-to-peer networks are easier to set up than client-server networks.TRUE?FALSE?

True

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Peer-to-peer networks allow individual devices to share files between each other.TRUE?FALSE?

True

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Peer-to-peer networks are commonly used in large organisations.TRUE?FALSE?

false

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It is easier to implement security procedures throughout a client server network than a peer to peer network.TRUE?FALSE?

true

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1.4 wired and wireless networks

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