COMPUTER STUDIES PAPER ONE *NYR* 1. Identify programming language used in the following generations:-(i) First generations(ii) Second generation2. Give importance of having the following in computer laboratory:-(i) Standard furniture in the laboratory(ii) Antiglare screen/monitor(iii) UPS3. (a) Explain the following terms as used in booting:-(i) BIOS(ii) POST(b) Differentiate between:-(i) Backspace and delete keys on the keyboard(ii) Insert and type over mode4. Explain the functions of the following central processing unit components(i) ALU(ii) Control unit(iii) Primary memory5. (a) Differentiate between static RAM and Dynamic RAM(b) Distinguish between compilers and interpreters6. (a) List twosoftcopy output devices(b) Distinguish between impact and non-impact printers citing one example in each7. Statetwo merits of using the following input devices:(i) Speech recognition(ii) Touch screen8. Differentiate between freeware and open source as end-user –license softwares.9. (a) Listfourtypes of system software(b) Explain the following functions of the operating system :-(i) Job scheduling(ii) Interrupt handling10. Explain the following disk management tools:-(i) Disk formatting(ii) Disk defragmentation11. Differentiate between the following terms as applied in operating system:-(i) Multi-user(ii) Multi-tasking12. Explain the following terms as applied in word processor(i) Text wrap(ii) Word wrap13. (a) Distinguish between first line and hanging indentation(b) Differentiate between the following combinations of terms:-(i) Filtering and sorting(ii) Relative and absolute cell referencing14. (a) Differentiate between the following combinations of terms:-(i) Filtering and sorting(ii) Relative and absolute cell referencing15. Identify the elements of a function16.A class teacher of form 3E in Nzambani secondary school requested a programmer to design a simple program that would help do the following:-
(a) Enter the names of students and marks obtained in 8 subjects; maths, English, Kiswahili, Biology, Chemistry, Business Studies, History and Computer Studies.(b) After entering each subject mark the program should calculate for each student(c) Depending on the average mark obtained, the program should assign the grades as follows:-Between 80 and 100 = ABetween 70 and 79 = BBetween 60 and 69 = CBetween 50 and 59 = DBelow 50 = E(d) The program should display each students name, total marks and the average grade. Using a flow chart, show the design of the program17.(a) Define the following terms in reference to the internet:-(i) Protocol(ii) Website(iii) Search engine(iv) Spam mail(b)Listthreeexamples of search engines(c) Identify the functions of the following devices in data communication:-(i) Modem(ii) Network interface card(iii) Brouter(d) Describe bounded and unbounded forms of communication giving two examples in each case(e) Outlinefouradvantages of using fibre optic cables18.(a) Define the following terms as used in data representation(i) Amplitude(ii) Frequency(iii) Nibble(iv) Byte(b) Perform the following 11111.11112+ 100001.10102– 1111.001112
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