Notesale: Turn your study into money

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Past Exam Questions on this section
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This section is now INFO2 3
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4 Transfer of Data in IT Systems)
Topic 11
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Hardware
State, with reasons, two items of hardware that could be needed for a personal computer to connect to
the Internet
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NOT
INTERNET (1) Max 4 2 x (2,1,0)
Topic 11
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Network Environments
A company is having a sixteen-station Local Area Network (LAN) installed
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(b) Give two suitable topologies for the LAN and, for each one, draw a labelled diagram to show its
structure
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(2 marks)(6 marks)(3 marks)
(a)
• Two or more computers linked together communicating / sharing resources
• A network that is restricted to a single site/building/campus
• physical connection is possible e
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cable/UTP/fibre optic cable but wireless can be used
• allowing high speed transmission of data
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Max 3
Topic 11
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7
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Each employee uses a networked PC on a Local
Area Network (LAN)
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(b) The office is part of a national chain that is connected together over a Wide Area Network (WAN)
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(iii) Give two benefits to the estate agent
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(c) The local office has purchased a digital camera to take pictures of the houses that it is selling
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(4 marks) (4 marks)(2 marks)(2 marks)

Topic 11
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7
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• e
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software installation, backups, printing, security, monitoring etc
Allow two different examples of centralised services
• servers provide centralised storage (of data)
• servers provide centralised storage of programs
Must mention both data and programs for two marks on storage
• more flexible use of equipment e
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employees able to use any available computer
• improved communications
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g
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Max 4
(i)
• Difference in reach (1) LAN restricted to a single site/building/campus (1) WAN more than one
site/geographically remote locations (1)
• Difference in type of connection (1) LAN can be connected via direct link/physical link/co-axial
cable/UTP/fibre optic cable/wireless/owned (1) WAN connection via satellite link, modem, telephone
line/leased/shared (1)
• Difference in speed of transmission of data (1) LAN high speed (10Mb, 100Mb etc) (1) WAN generally
slower (1Mb typical broadband) (1) Max 4
Topic 11
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Network Environments
The term used to describe the arrangement of computers in a network is topology
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(4 marks)
• bus (1) structure must be diagram and match name (1)
• star (1) structure must be diagram and match name (1)
• ring (1) structure must be diagram and match name (1)
Allow one mark for a correct diagram 2 x (2, 1, 0) 4
Topic 11
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(a) Describe two advantages to the students of using a LAN rather than stand-alone computers
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4 marks 2 marks
(a)
• Can use any terminal (1)
• to access own files stored on the network (1)
• Software available at any terminal (1)
• Improved access to peripherals (1)
• e
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range of printers available at all terminals (1)
• Central control of backup (1)
• no need to worry about taking copies of important work (1)
• can communicate with other LAN users (1)
• and share files/information (1)
• Can access Intranet for school information etc (1)
Any 4 allow extra mark for good expansion of the above points Max 4

(b)
• Slow response if network heavily used
• Limited storage capacity on server
• Restriction of file types stored on server
• Restrictions on number and/or type of printout
• If the server fails then no access to any network facilities
• Inability/limited ability to customise desktop etc
• Viruses can spread more quickly
• Online bullying
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9
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The designers can use their computers
‘stand alone’ or as part of the network
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(a) Draw a diagram of the LAN and give one advantage of using a star topology
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(c) Describe one advantage to the designers of working on the network
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g
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Each college has a Local Area Network (LAN) and these networks are to be joined together to form a
Wide Area Network (WAN)
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(b) Give two advantages to the merged college of using the new WAN
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(a)
• LAN restricted to a single site/building/campus (1) WAN more than one site/geographically remote
locations (1)
• LAN connected via direct line/physical link/co-axial cable/UTP/fibre optic cable/radio (1) WAN
connection via satellite link, modem, telephone line, microwave (1)
(b)
• Staff/students can work/communicate across sites
• Software available across sites
• Data files available across sites
• Ability to backup at different locations
(c)
• Slower transmission speeds between sites
• Programs/data not available if communications link fails
• Funding implications of maintaining communications link
• Viruses spread easily between sites Max 2
(4 marks) (2 marks) (2 marks)
Describe two features of each of the following types of Local Area Network (LAN):
(a) peer-to-peer network;
(b) client-server network
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• All computers have the same status
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• Allow ‘any computer can act as a client or a server’
• Few additional facilities e
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limited security
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• Clients send requests for services to servers
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g
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• If the server goes down then the clients on the network cannot access the resources provided by the
server
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9 – Network environments
The term used to describe the arrangement of computers in a network is topology
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4 marks
(b) State one different advantage for each topology that you have chosen
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g
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Employees are to be issued with a handbook to help
them to understand the networking terms
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(a) Local Area Network and Wide Area Network
(b) Server and peer-to-peer
(a) Max 5
• Network a set of computers and peripherals connected together
• Network enables sharing of data and resources
• All the computer systems are relatively close to each other e
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the same building or cluster of
buildings (LAN)
• Direct physical connection is possible (LAN) e
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fibre optic/coax cables or Wireless Network
• Network connections are normally cables (LAN)
• Computers are geographically remote (WAN)
• A range of connection methods can be used e
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satellite link, modem, telephone line, router,
gateway (WAN) 5
(b) Max 5
• A computer/station on a network that provides a resource that can be used by any client station server
• Provides access to storage – file server
• Provides access to network printer and print spooling – print server
• Provides access to shared information – database server
• Server not working means that clients do not have access to server controlled resources or (p-to-p)
a station not working only means that the other stations do not have access to the resources on that
station
• Clients/stations have access to resources/data controlled by other clients/stations (p-to-p)
• All stations on the network have similar status (p-to-p)
• Provides access to shared resources e
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printers and storage (p-to-p) (if not given in (a)) 5
10



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