The diagram below shows a layout of a computer network used by a law farm. A workstation and a printer are located in every consulting room

The diagram below shows a layout of a computer network used by a law farm. A workstation and a printer are located in every consulting room

 (i) Name the network topology depicted in the diagram  
(ii) Name the device labeled D
 (iii) State four functions of the device labeled ‘server’  
(iv) Give two advantages and one disadvantage of the above network design 
(v) If the firm intends to open extra offices in two different towns, name any three hardware devices that would be required
 (vi) State any two security problems that might arise by linking the offices in different towns
 (b) What is spyware? ​

RESPONSES

(a) (i)Star 
(ii) Hub or Switch/Router 
(iii)File sharing

•  Manage users accounts
•  Manage host applications
•  Manage files/store/hold tiles for other workstations
•  Control the use of resources
•  Can be a link to another network/gateways
•  Manage/control workstations
•  Contain programs which are used by workstations
•  Receives request/information from and to the workstations 

(iv)
Advantages .

•  Allow for concentration of network resources
•  Give administrator central focal point for management
•  Easy to configure/downgrade/upscale
• Easy to trouble shoot
•  Faster connection
•  Each work station does not have to queue for printing
• If a link to one of the workstations breaks down, the others can continue functioning independently

Disadvantages

•  Costly to install 
•  Costly to install because each workstation has a its own printer
•  Uses more cables than ring and bus topologies
•  In case the server or the hub fails the network facilities are lost.
•  Installation is time consuming because each node forms a segment of its own.

(v)

•  Server
•  Modem
• Router
•  Firewall
•  Extra cables
•  Repeater
•  Bridge
•  Transceiver
•  Satellite dishes
• Printers
•  Keyboard
•  Monitor
•  Telephone line 
•  Hacking
•  Tapping/trespassing
•  Virus infections
•  Vandalism of cables
•  Cracking 

(b)Spyware :- rouge /malicious program for spying/collecting information e.g. passwords from other systems without the user knowledge.

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