Welcome to Gayan Prodip! We've broken down the recent Class IX Computer Science Half Yearly Examination to provide you with detailed, easy-to-understand solutions. This guide is perfect for students looking to check their answers, understand key concepts, and prepare for future exams.
This paper covers fundamental topics including the history of computers, number systems, operating systems, networking, MS-Office, and digital ethics. Let's dive into the answers!
Before start: please note, answer may not same as your teacher's note. We focus on concept clarification
1. Choose the Correct Option (1 * 5 = 5)
(a) Storage of 1KB means the following number of bytes -
Answer: ii. 1024 {1 Kilobyte (KB)=1024 Bytes.}
(b) Third generation computer used -
Answer: iv. ICs (Integrated Circuits)
(c) The base of hexadecimal number system is -
Answer: iii. 16 {Hexadecimal uses 16 unique symbols (0-9 and A-F)}
(d) Name a multiuser operatoin system -
Answer: i. Unix (It is the classic example of a powerful, command-line based multiuser OS.)
(e) Which of the following is not a protocol -
Answer: iii. ISP (Internet Service Provider)
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2. fill in the blanks : (1 Mark Each)
(i). ENIAC was the first fully electronic general purpose computer.
(ii). A 32 bit system can access 4 GB memory address
(iii). Title bar is located at the top of an active document.
(iv). Inbox is a section of the e-mail interface where emails appear.
(v). Piracy refers to the unauthorised duplication of computer software
Also read: NCERT textbook Solution in Assamese for Class 6
3. State whether the following statements are True or False (1 * 5 = 5)
(a) Interpreter is an utility software. False
(b) Windows comes pre-loaded on most new PCs. True
(c) By default, a workbook in Excel contains one worksheet. True
(d) The entire presentation can be seen at a time in Normal view. False
(e) A Search Engine has two main functions Crawl and Rank. True
Also read: NCERT textbook Solution in Assamese for Class 6
5. Answer the following questions: (2 * 10 = 20)
(a) What is AI?
Artificial Intelligence (AI) is the branch of computer science focused on creating systems that can perform tasks normally requiring human intelligence, such as learning, problem-solving, and decision-making.
(b) Why we use secondary memory?
Secondary memory is used for permanent, non-volatile storage of data and programs. It offers large capacity at a lower cost compared to primary memory (RAM). Example of secondary memeories are HDD, SSD, Pen Drive etc.
(c) What do you mean by multitasking?
Multitasking is an operating system feature that allows a single CPU to rapidly switch between and execute multiple processes seemingly simultaneously, improving system efficiency.
(d) What is mail merge?
Mail Merge is a feature in word processors used to create personalized documents (like form letters) by combining a main template document with a data source (list of names/addresses).
(e) For what purpose pie-chars are used?
Pie charts are used to show proportional distribution. They illustrate how a total (whole) is divided into different categories or slices.
(f) Differentiate between Slide Transition and Animation
| Slide Transition | Animation |
|---|---|
| Applies to the entire slide. | Applies to specific objects on a slide, such as text, images, shapes, and charts. |
| To create a smooth visual flow and add interest when changing from one slide to another. | To draw attention to key points, control the order in which information appears, or add visual appeal to a slide's content. |
| You can only apply one transition effect to a slide at a time. | ou can apply multiple animation effects to a single object or to several objects on the same slide. |