KASSU 2021 Exam
2021 KASSU Exam done by Kabarak High, Sacho and Sunshine is out. To access the marking scheme and questions, click on the link below:
MARKING SCHEME & QUESTION PAPERS FOR 2021 KASSU EXAM
Kindly note the 2020 Mock Booklets are out- the booklets are very comprehensive. Free questions will be posted next week. Only our subscribers will access the content when it is posted.
The following papers are available on the package:
See sample exam published below:
Note question numbering for the sample exam posted below is not perfectly done but the original exam is OK.
Computer Studies Paper 1
SECTION A (40 MARKS)
ANSWER ALL QUESTIONS IN THIS SECTION
- a) Computer memory determines the processing power of a computer. State the memory capacities of the following computer generations. (1mark)
- First Generation
- Third Generation (1 mark)
- b) State the storage devices used by the generations named in (a) above. (1mark)
- Differentiate between dedicated computers and special purpose computers. (2 marks)
- (a) State the meaning of computer output on Microform (COM) as used in output devices. (1 marks)
(b) State two types of computer output on Microform. (2 marks)
- (a) State one limitation of each of the following cables as used in computer interfacing.
- Parallel cables; (1 mark)
- Serial port (1 mark)
(b). State two advantages of using firewire over USB cables. (2 marks)
- Apart from use of carpets, suggest three possible ways of reducing dust in a computer room.
(3 marks)
- (a)Explain how a mouse can be used to perform the operations listed below.
- Selecting objects and commands (1 mark)
- Opening files and folders (1 mark)
- Invoking context menus (1 mark)
- A computer system is composed of several microchips, each having different functions in the operation of a computer.
- Write the acronym BIOS in full as used in computing. (1 mark)
- State the function of the BIOS during booting process. (1 mark)
- Explain the meaning of the term cold booting process. (2 marks)
- Due to the risks involved in using the traditional classroom teaching method during this covid-19 period, many schools have embraced online teaching methods. State the meaning of the following teaching methods:
- Distance learning (1 mark)
- Interactive learning (1 mark)
- In a calculation, the actual result obtained was 0.7649326 but the computer presented it as 0.764.
- With reference to data processing, identify the type of error above and state how it can be minimized (1 mark)
- Distinguish between Sequential file organization and indexed Sequential file organization (2 marks)
- State two circumstance which may prompt a teacher to use computer simulations when teaching in a school. (2 marks)
- State the meaning of the term multi-user operating system as used in computing. (2 marks)
- State two ways in which operating system manages memory in a computer system.
(2 marks)
- State three reasons why system maintenance is necessary in system development life cycle (SDLC).
- Table 1 and Table 2 are related tables in a database. Use them to answer the questions that follow.
- State the names of the fields shown in table 2 above;
- DeptID (1 mark)
- Std Registration No. (1 mark)
- State two reasons for adding DeptID field in Table 2 above. (2 marks)
- Explain the term bookmark feature as used in when accessing the internet. (2 marks)
SECTION B (60 marks)
Answer question 16 (compulsory) and any other three questions from this section.
- (a)Explain the meaning of the term pseudocode as used in program development.
(2 marks)
(b)State the function of the following language translators during program development.
(i) Interpreter (1 mark)
(ii) Compiler (1 mark)
(c)State the stage of program development in which:
- a flowchart would be drawn (1 mark)
- the program runs as intended and performs as required. (1 mark)
- the user guide would be written (1 mark)
- a programmer seeks to better understand the problem. (1 mark)
(d)A bookshop owner contracted a programmer to design a program that can be used to manage N number of books in his business as follows;
- Enter the book name, publisher and marked price of each book.
- Calculate the discount and new price of each book.
The book shop gives a discount of 13% for purchase of a books worth Ksh.5, 000, 8% for purchase of books worth Ksh.1000 and none for purchase worth Ksh.1,000 and below.
Draw a flowchart to represent the information above, count number of books and output book name, publisher, marked price, discount and new price. (7 marks)
- (a) XYZ company is facing challenges with their current information system, hence the need for a new application software that could solve their problems. The management has assigned the ICT department to develop its own in-house programs.
- Define the term in-house developed programs (1 mark)
- State any two advantages and one disadvantage of in-house developed programs (3 marks)
(b)Data communication is known to have greatly changed the way people exchange and access information around the world.
- Define the term topology as used in data communication (1 mark)
- Distinguish between the terms listed below
- Message switching and packet switching (2 marks)
- Half duplex and full duplex mode of data transmission (2 marks)
(c)Identify the ICT personnel responsible for each of the following duties in an organisation:
- Ensuring up-to-date maintenance of ICT records (1 mark)
- Identify and fixing security loopholes (1 mark)
- Testing and debugging program (1 mark)
(d)State the function of each of the following keyboard keys in a keyboard.
(i) tab key (1 mark)
(ii)Space bar (1 mark)
(iii)Delete key (1 mark)
- (a) (i)Distinguish between real time and online data processing. (2 marks)
(ii) State the significance of the following types of files to a business
- Backup (1 mark)
- Master (1 mark)
- Archive (1 mark)
(b) Explain two benefits of displaying information in a computer system using a monitor compared to printer. (4 marks)
(c)Explain the purpose of each of the following in system implementation stage.
(i) file conversion (2 marks)
(ii)Staff training (2 marks)
(d)State how data in a computer system is secured using;
- Antivirus (1 mark)
- Password (1 mark)
- (a) Explain any three types of human computer interfaces as used in computing.
(3 marks)
(b) State four ways in which computers are used in the lands department in a county government. (4 marks)
(c)(i)Explain the following types of errors as found in Microsoft excel.
- #NUM! (1 mark)
- #VALUE! (1 mark)
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(ii)Outline three cell referencing methods giving examples. (3 marks)
(d)State a situation when each of the following Desktop Publishing program features may be used when creating a publication.
- Layout guides ; (1 mark)
- Layering; (1 mark)
- Bring Forward; (1 mark)
- (a)Bob was advised to format a hard disk for a computer. Explain two circumstances which may prompt a technician to format a hard disk in the computer room.(4 marks)
(b)Explain a situation when each of the following Word Processing program may be used when creating a document.
(i) Wrap text (2 marks)
(ii)Watermark (2 marks)
(c)Perform the binary arithmetic:
11012 + 1012 – 10012 and convert the answer to decimal notation (3 marks)
(d)Using 6- bit ones complement perform the arithmetic operation; (4 marks)
110112 -2310
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