COMPUTER STUDIES FORM 2 END-TERM 1 EVALUATION TEST MARCH 2023 MODEL10042023003

COMPUTER STUDIES FORM 2 GROUP 1 END-TERM 1 EVALUATION TEST MARCH 2023 MODEL10042023003

ANSWER ALL QUESTIONS PROVIDED

1. State five factors to consider when choosing an operating system [5 mrks]
2. Define the following terms [5 mrks]
   a. Folder
   b. File
   c. Data backup
   d. Partitioning
   e. Sub-directory
3. State five causes of data loss in computers and how they can be avoided. [5 mrks]
4. State two methods used to restrict unauthorized access to computer systems [2 mrks]
5. State the meaning of computer crime and list four types of computer crimes [5 mrks]
6. State three measures one would take to protect computers from virus attacks [3 mrks]
7. State three types of computer viruses [3 mrks]
8. State five uses of computer in a media house [5 mrks]
9. What is scanning? State any one type of a scanner [2 mrks]
10. State five differences between third generation and fifth generation computers [5 mrks]
11. State the roles played by the following keyboard keys: [5 mrks]
    a. Capslock
    b. Shift Key
    c. Space bar
    d. Backspace Key
    e. Return Key
12. 
    (a) What is a graphical user interface? [1 mrk]
    (b) State the four elements of a graphical user interface [4 mrks]

ANSWERS

State five factors to consider when choosing an operating system [5 mrks]

1. hardware specifications such as capacity of RAM and harddisk, processor speed and size of screen
2. documentation such as the user manual and warranty
3. size of the computer
4. user friendliness
5. authenticity i.e not fake
6. legitimacy i.e. it is accepted as per the law
7. availability in the market
8. cost
9. upgradeability and
10. portability i.e. can be installed in different hardware architecture.

Define the following terms [5 mrks]

a. Folder

a folder is also called a directory. it is a storage area for files and other folders

b. File

this is a collection of records

c. Data backup

this is a copy of the original data stored on a separate storage device for the purpose securing information just incase the original data is destroyed or corrupted.

d. Partitioning

this is the process of dividing the surface of the harddisk into two or more logical drives for the purpose of organizing and managing data

e. Sub-directory

this is a directory/folder under another directory/folder

State five causes of data loss in computers and how they can be avoided. [5 mrks]

1. virus infection
   avoid using suspicious flash disks and memory cards and consider using an anti virus/malware
2. shutting down the computer without using the correct procedure
   shut down the computer properly
3. harddisk crash
   avoid dust near computers
4. accidental erasure
   verify information before deleting
5. irregular power supply / power surge
   install AVS and UPS power gadgets
6. liquids
   avoid liquids near computers
7. networking
   protect your private and confidential information from being viewed on the network.