| Examination
Questions (page 341) |
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1(a)
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A
program that copies itself and damages the data or adversely
affects the system in some way. |
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(b)
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Attached
to an e-mail or other file downloaded off the Internet. From
a floppy which has been used with an infected computer. Off
a program disk such as a game. |
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(c)
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Use
antivirus software. |
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(d)
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Run
virus checking software to check all files coming into the computer.
Don't download files off the Internet. Don't allow people to
insert floppies that have been used with other machines. |
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2
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Any
two from: Use passwords so that only people authorised can see
the contents; Do not leave computers switched on with the files
loaded; Keep disks locked away when not in use; Shread any printouts
produced. |
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3(a)
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Can
erase or ruin data. Can display annoying messages. Can slow
the system down. |
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(b)
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Use
antivirus software to remove the virus and repair the data |
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4(a)
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(i)
(ii) |
See answer to 1(a)
Scan all disks and files using antivirus software. Don't copy
illegal software. Don't download off the Internet. |
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(b)
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(i)
(ii) |
Unauthorised access to a computer.
Use passwords that are long enough and are changed regularly.
Use encryption with sensitive data (e.g. credit card details).
Use methods to prevent physical access to the computer system.
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5(a)
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A
program that has been produced with the aim of doing damage
or harm to computer systems. |
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(b)
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Any
two such as:
Always use an up-to-date virus checker to scan disks |
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6
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Staff
will be used to seeing people removing computers from the school
so this will make it hard to guard against theft.
Pupils may load unlicensed software on the machines.
Viruses may be introduced onto the computers. |
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7(a)
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Any
two such as:
Lock terminal when not in use.
Regular backups should be taken and stored in a secure place.
Terminals should be located away from public areas.
Use swipe cards to gain access to computer. |
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(b)
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One
from:
User passwords and ids should be used.
Users should be allocated different rights of access. |
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