1 霹雳怡保培南独立中学 SM POI LAM (SUWA) IPOH MID-YEAR EXAMINATION 2022 Computer Studies DATE: TIME : 11-5-2022 900am-1000am ( 60 minutes) NAME：______________________ REG.NO:_________________ CLASS: J3REN, J3PIN, J3HE, J3YI, J3XIN (J3 ) READ THESE INSTRUCTIONS FIRST -Write your name, class and student registration number in the spaces provided unless this has been done for you. -Write in blue or black pen. -Do not use highlighters, glue or correction fluid. -Three sections of this exam paper： A. Objective: 50% B. Fill in the blank: 10% C. Subjective: 40% -Do not turn the pages until you are told to do so. -There are 6 pages including this page. -Check that you have the correct number of pages. -Read the instructions for all the sections. -Answers for Section A and B should be written on the attached answer sheet. -You should observe all the standing orders of the Examination Hall. Do Not Turn This Page Until You Are Told To Do So This paper consists of 6 printed pages Prepared by ： ………………… ( TEI KOK FONG ) Checked by： ………………… ( LEOW SOOK WAN )
2 Section A: Objective (50%) 1. Which one is a ‘set command” for pseudocode? A) set (a) = 0 B) (a) = 0 C) 0 = (a) D) (a) 2. Which one is “process” in computational thinking? A) Flow B) Input C) Object D) Variable 3. “An area of screen that contains graphical element” in app inventor referring to. A) Canvas B) Sound C) Animation D) Text 4. App inventor “Graphic object that can be moved about with program command” is which objects? A) Screen B) Properties C) Sprite D) Layout 5. Which program can used to create androids app? A) IOS B) Win 7 C) App inventor D) Linux 6. “Input (b) = last_number” what does input mean? A) Delete the input B) Ask the user to tell the computer to data to go into the program C) Display result D) Calculation 7. Flow chart, what the arrow shape means? A) Direction of flow B) Iteration C) undo D) Redo 8. “Set mount_of_radioactive = “amount of radioactivity” ” is ( ). A) Pseudocode B) Flow chart C) Excel formula D) Assign variable
3 9. Which tool to model change in a system over time? A) Counter B) Time step C) flow chart D) Pseudocode 10. Which tool describe algorithm? A) Word B) Excel C) Power Point D) Pseudocode 11. ) What is representation? A) Shows in one diagram what might take many words to explain B) Edit C) Reset D) Computer system 12. Which tool to describe the process or system? A) Flow chart B) Column chart C) Bar chart D) Line chart 13. Which one of the following to make the variable change? A) Iteration B) Modelling C) Process D) Computer system 14. What is iteration? A) Skip a step B) Repeat a step C) Compile Program D) Undo 15. Flow chart, which one is “input or output” symbol? A) B) C) D) 16. Flow chart, which one is “decision” symbol? A) B) C) D)
4 17. Flow chart, this symbol means ( ). A) OR B) AND C) Process D) Document 18. or Flow chart, this symbol means ( ). A) Decision B) Database C) Process D) Start or Stop 19. ( ) is a type of process that goes out of the model to change the variable. A) Input B) Output C) Process D) Object 20. ( ) is a type of process that comes into the model to change the variable. A) Modelling B) Input C) Output D) System 21. ( ) is Remove any unnecessary or unimportant information in a problem. A) Variable B) Flow chart C) Pseudocode D) Abstraction 22. What is variable? A) Anything that can be changed, control and measure in model B) Programming C) Computer system D) 3D program 23. Which one is a way of represent thing, processes and system? A) Variable B) Modelling C) Assumption D) Flow chart 24. What is the meaning of decomposition? A) Skip one step B) Combine C) Hardware D) Breaking the problems down to smaller part
5 25. “Something we think is true, although we might not have a proof” means A) Assumption B) IF C) And D) Logic statement Section B: Fill in the blank (10%) 1. ______ is global variable. 2. ______ is local variable. 3. ______ is the value for subject. 4. ______ is the value for homework. 5. ______ is the procedure name. 6. ______ is the component name for button. 7._______ is the arithmetic operator used in this code. 8. _______ label(s) used in this application 9. _______ label properties used in this application. 10. _______ is the formula for total. ( homework*exam_mark , computer , subject , calc , total , 0 , 1 , 2 , 3 , text , + , - , * , Homework ) Section C: Subjective (40%) 1 Convert “101” decimal and “99” decimal to binary code. (4%) 2 Convert “00111010” binary and “11001010” binary to decimal. (4%) 3 What data format computer store data in storage devices? And give one example. (4%) 4 List two main parts in the CPU. (4%) 5 What is the function of “Arithmetic and logic unit” and “control unit”? (4%) 6 What is the function of CPU and RAM? (4%) 7 Describe the difference between register in CPU and disk drive in computer. (4%) 8 List two type of memory in computer system. (4%) 9 Please list any two steps from three steps how CPU process instruction from cache. (4%) 10 How many possibilities value for Truth table? Please list out all possibilities. (4%)
6 霹雳怡保培南独立中学 SEKOLAH MENENGAH POI LAM (SUWA) IPOH MID-YEAR EXAMINATION 2022 Subject : Computer Studies Time : 900am-1000am ( 60 minutes) Date: 11-5-2022 Name:_______________________________ Student no. : _________________ Class: J3REN, J3PIN, J3HE, J3YI, J3XIN (J3 ) Section A: Objective (50%) 1 6 11 16 21 2 7 12 17 22 3 8 13 18 23 4 9 14 19 24 5 10 15 20 25 Section B: Fill in the blank (10%) 1 2 3 4 5 6 7 8 9 10 Section C: Subjective (40%) 1 2 3 4 5 6 7 8 9 10
