Lyceum International School Grade 8 Computer Science Exam PDF - July 2023

Second Semester Examination - July 2023 Paper = /95 Subject : Computer Science Handwriting = /05...

Second Semester Examination - July 2023 Paper = /95 Subject : Computer Science Handwriting = /05 Total = /100 Class : 8 …....... Duration : 2 periods Date :........……………………...... Candidate's name :..............................................….............. Admission no:............………......... Instructions: 1. Use the given space to write the answers. 2. Ink all your answers and diagrams. PART I Underline the correct answer. 1. Which of the following is not a programing language? (i) Python (ii) Java (iii) Photoshop (iv) Pascal 2. What is the symbol for output in a flowchart? (i) A parallelogram (ii) A rhombus (iii) An oval (iv) A rectangle 3. What is the symbol for a process in a flowchart? (i) (ii) (iii) (iv) 4. Identify the ‘move’ tool in GIMP. (i) (ii) (iii) (iv) 5. What is a pseudocode? (i) A way of describing a set of instructions in text form. (ii) A specific programming language that all computers use. (iii) A diagrammatic representation of a set of instructions. (iv) A program. 6. Which device facilitates the computer to work with audio? (i) Sound Card (ii) Power Supply (iii) MODEM card (iv) ROM 7. The main permanent storage device of a computer is (i) the hard drive. (ii) the CD drive. (iii) the floppy drive. (iv) the RAM. Grade 8 Computer Science - Second Semester Examination - July 2023 Prepared for Lyceum International School by Lyceum Assessments  2 8. Which statement describes RAM correctly? (i) RAM is a type of memory that stores data permanently. (ii) RAM is a type of memory that provides data to the processor at a very slow speed. (iii) RAM is a type of memory that contains data and instructions which are currently needed by the processor. (iv) RAM is a type of memory that stores data and instructions which have been processed during the last couple of days. 9. This picture shows a (i) CPU. (ii) heat sink. (iii) case fan. (iv) water cooler. 10. Which device uses a read/write head? i) DVD. (ii) Hard drive. (iii) Pen drive. (iv) SD card. [Total = 2 × 10 = 20 marks] PART II 1. Mark whether the following statements are true (T) or false (F). (i) DDoS attacks may use a botnet to overwhelm a server or other network resource with fraudulent traffic, thus triggering the system to deny access to legitimate users. (ii) Phishing attack is sending someone a text message containing a malicious software to encrypt personal data. (iii) A rootkit is a set of malicious applications, which allows an enemy to get hold of the administrative access to a computer system. (iv) Hacking is always an illegal activity. (v) Backing up is not a security measure that could safeguard data from most threats. [Total = 3 × 5 = 15 marks] Grade 8 Computer Science - Second Semester Examination - July 2023 Prepared for Lyceum International School by Lyceum Assessments  3 2. Complete the following key. Hackers [Total = 3 × 3 = 9 marks] 3. (i) Write three types of filters available in Open Office Calc. (a) --------------------------------------------------------------------------------------------------------- (b) --------------------------------------------------------------------------------------------------------- (c) --------------------------------------------------------------------------------------------------------- (3 marks) (ii) Circle the menu which should be used in order to activate the filtering options in Open Office spreadsheet. (3 marks) (iii) Circle the icon that can be used to insert a textbox in Open Office presentations. (3 marks) (iv) What is the animation effect that moves an object within the slide in a given route? -------------------------------------------------------------------------------------------------------------- (3 marks) [Total = 12 marks] 4. A company expects to develop a computer program for the purpose of calculating annual performance bonuses for its employees. A score is calculated for each employee based on their employee category, performance and years of experience. On a score of 1 to 100, the No. of monthly salaries given as the bonus is determined as follows: Grade 8 Computer Science - Second Semester Examination - July 2023 Prepared for Lyceum International School by Lyceum Assessments  4 Bonus in no. of Score monthly salaries 80 and above 3 65 - 79 2 50 - 64 1 Less than 50 0 Once the score is entered, the computer system should display the No. of salaries given as the bonus. (i) Complete the given flowchart drawn for the above task. Start Output “Enter the score” No Yes Output “Bonus = 3 salaries” Is Yes Score >= 65? No Output “No Bonus” (2 × 8 = 16 marks) Grade 8 Computer Science - Second Semester Examination - July 2023 Prepared for Lyceum International School by Lyceum Assessments  5 (ii) Write the Pseudocode for the above task. -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- (15 marks) [Total = 31 marks] 5. Write what will get displayed on the screen when you run the following Python code. X = 25 Y = 10 results = X – Y print (“X – Y =”, (results)) [Total = 8 marks] END Ref:CS Grade 8 Computer Science - Second Semester Examination - July 2023 Prepared for Lyceum International School by Lyceum Assessments