Higher Computing Unit 1 – Software Questions
1.
Describe the function of a defragmenter.
2.
Magnus has created a graphic file at home. The computers at school use a different
graphics application. Name a standard file format that the file could be saved in to allow
both applications to read the same file.
1
3.
Memory management will perform a number of tasks during the loading of a file.
Describe one of these tasks.
1
4.
State two techniques that anti-virus software may use in the detection of a virus.
2
5.
Debbie installs the latest anti-virus software to help prevent the computer from
becoming infected. Name and describe one anti-virus software detection technique.
2
6.
Whilst using the internet a computer becomes infected by a virus. Describe two ways in
which this virus may have escaped detection by anti-virus software.
2
7.
Hamish transfers songs from his computer to the portable MP3 player. Two functions of
the OS that are involved when transferring the files are:
(a)
file management;
(b)
input/output management.
Describe a task that each of these functions would perform in this situation.
2
8.
When a computer is switched on part of the OS is already in memory.
(a)
What is the name given to the part of the OS that locates and loads the rest of the
OS into memory?
1
(b)
State the type of virus that can affect the computer during the loading of the OS. 1
9.
State two reasons why digital images are stored as JPEG’s.
2
10.
Anti-virus software uses various techniques to detect viruses. One of these techniques
is Heuristic detection.
(a)
Explain how heuristic detection technique is used to detect a virus.
(b)
Explain why a Trojan horse is not classified as a computer virus.
1
1
A virus checker and a disk defragmenter are utility programs. Name one other utility
program.
1
Explain how the use of a disk defragmenter can improve the system performance of a
computer.
2
11.
12.
13.
State the function of the operating system that is responsible for the data transfer between
the processor and a scanner.
1
14.
James wants to make copies of some photographs. He intends to use a scanner to
capture the photographs and an ink jet printer to print the final images.
(a)
Explain why saving the scanned image as a gif would not be appropriate in this
case.
1
(b)
1
State a suitable file format for saving the file.