Question & Answer - 101 Computing

Storage Devices: The Technologies Behind Your Data

Administrator — Wed, 02 Oct 2024 11:00:18 +0000

In this lesson we will investigate the three main technologies used by the different storage devices in a computer system: Optical storage devices such as CD, DVDs and Blurays Magnetic storage devices such as the Hard-Disk Drive (HDD), floppy disks…

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Code Maintainability Q&A

Administrator — Thu, 30 Nov 2023 12:48:35 +0000

Question 1[4 marks] The two Python scripts above were created by an IT manager of a school and are performing exactly the same task: to generate a username based on the student’s firstname, lastname and year group. Compare both of…

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Debugging and refining an algorithm – Q&A

Administrator — Sat, 16 Apr 2022 09:21:34 +0000

Question 1[4 marks] Zara has created the following program in her computer science lesson. The aim of this program is to find out if the user is old enough to vote or not, the voting age being 18 years old.…

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Refining Algorithms – Q&A

Administrator — Thu, 07 Apr 2022 11:07:04 +0000

Question 1[3 marks] Somjay has created the following program in his computer science lesson. The aim of this program is to generate and display five random “lucky” numbers every time this program is executed. Here is his Python code: print("Your…

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Discount Price Calculator – Q&A

Administrator — Thu, 07 Apr 2022 08:37:12 +0000

Question 1[10 marks] Oksana has created the following program in her computer science lesson. The aim of this program is to calculate the price after discount of a list of products bought by a customer. Here is her Python code:…

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Job Scheduling Algorithms – Q&A

Administrator — Wed, 06 Apr 2022 12:55:57 +0000

Question 1[20 marks] One of the main purpose of the Operating System is to control the hardware and more specifically the CPU. The CPU performs all the jobs/processes requested by the different applications. A scheduler is a program of the…

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Performance Modelling & Data Visualisation – Q&A

Administrator — Mon, 14 Mar 2022 15:27:52 +0000

Question 1[2 marks] A small town wants to improve the traffic within the town centre at peak time. They are considering using a synchronised traffic lights system to fluidify the traffic. But before replacing all existing traffic lights and installing…

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Recursive vs. Iterative Algorithm – Q&A

Administrator — Mon, 14 Mar 2022 09:22:12 +0000

Question 1[2 marks] For this question, we are looking at an algorithm used to implement the divisibility rule for 3 which states that: A number is divisible by 3 if the sum of all its digits is divisible by 3.…

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File Size Calculations – Q&A

Administrator — Sun, 13 Mar 2022 18:57:45 +0000

Question 1[3 marks] How many of the above text files can we store on a 1.44MB floppy disk? Each text file contains 6,000 characters and is encoded using ASCII: 8 bits per character. ✔ ✘ ↻ A Question 2[3 marks]…

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OOP – Inheritance – Q&A

Administrator — Sun, 13 Mar 2022 16:39:14 +0000

Question 1[2 marks] Class File: private filename //Constructor for the File class procedure new(strFilename): filename = strFilename public procedure rename(strFilename) if strfilename!="": filename = strFilename Class MP3 inherits File: private title private artist private duration //Constructor for the MP3 class…

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