12th Class Computer Science: All Short Questions
Chapter 1: Office Automation and Typing
Q: What do you know about the formula bar in Excel?
The Formula Bar is a toolbar at the top of the Excel worksheet that allows you to enter or edit data and formulas. It displays the content of the currently selected cell.
Q: Write the full form of WYSIWYG.
The full form is What You See Is What You Get.
Q: Write shortcut keys to move text in Word.
To move text, use Ctrl+X (Cut) to remove it and Ctrl+V (Paste) to place it in the new location.
Q: Name fonts used for typing in Punjabi.
Common fonts include AnmolLipi, Raavi, Joy, and Asees.
Chapter 2: Control Statements
Q: Define Branching and name its control statements.
Branching is a decision-making process in programming where the flow changes based on a condition. Statements include if, if-else, nested if, and switch.
Q: What is looping? Name three types.
Looping is the repetition of statements. The three types are for loop, while loop, and do-while loop.
Q: What is a Nested if statement?
A Nested if is an if statement placed inside another if statement.
Q: What are Post-Test loops in C?
In a Post-test loop, the condition is checked after the execution of the loop body. do-while is the primary example.
Chapter 3: Computer Networks
Q: What is a Bridge?
A Bridge is a network device used to connect two network segments together. It filters data traffic based on MAC addresses.
Q: Why do we need a network?
Networks are essential for resource sharing (printers, files), communication, data reliability, and cost reduction.
Q: Name the different types of OSI layers.
1. Physical, 2. Data Link, 3. Network, 4. Transport, 5. Session, 6. Presentation, 7. Application.
Chapter 4: Current Trends in IT
Q: Give names of any four current trends in IT.
1. IoT (Internet of Things), 2. Cloud Computing, 3. AI (Artificial Intelligence), 4. 5G Technology.
Q: Define Bluetooth Technology.
Bluetooth is a wireless technology used for exchanging data over short distances between mobile and fixed devices.
Q: What is GPS Technology?
Global Positioning System (GPS) is a satellite-based system used to determine location, speed, and time anywhere on Earth.
Chapter 5: AI and Expert System
Q: Differentiate between Narrow AI and General AI.
Narrow AI is designed for a single task (e.g., Apple Siri). General AI is a theoretical machine capable of performing any intellectual task a human can.
Q: What are the three major components of an Expert System?
1. User Interface, 2. Knowledge Base, 3. Inference Engine.
Q: What are the limitations of Expert Systems?
They lack human common sense, cannot handle inconsistent knowledge, and can be expensive to build.
Chapter 6: Digitalization
Q: Describe Net Banking.
Net Banking (Online Banking) is a service that allows customers to perform financial transactions over the internet through a bank's website.
Q: What is DigiLocker?
DigiLocker is a government-provided cloud platform for digital storage, sharing, and verification of official documents.
Q: Write down the benefits of online payment.
It is fast, easy, secure, allows for cashless transactions, and provides a 24/7 payment record.
Chapter 7: E-Governance
Q: What are the three levels of E-Governance?
1. National Level, 2. Domestic (State) Level, 3. International Level.
Q: What are Sewa/Suvidha Kendras?
These are service centers established to provide various government-to-citizen (G2C) services like certificates and bill payments under one roof.
Q: Name any two information systems.
1. MIS (Management Information System), 2. DSS (Decision Support System).
Chapter 8: Image Editing and Tools
Q: What are Masks in GIMP?
Masks are used to protect certain areas of a layer while allowing you to modify the transparency of other parts without deleting data.
Q: What are Layers in GIMP?
Layers are like transparent sheets stacked on top of each other. They allow you to work on parts of an image independently.
Chapter 9: Audio and Video Editing
Q: What is CD Ripping?
CD Ripping is the process of copying audio or video files from a CD or DVD onto a computer's hard drive.
Q: What are Codecs?
A Codec is a program or file used to compress and decompress digital media files (audio or video).
Q: What is Video Split?
Video Splitting is the process of dividing a single video clip into multiple smaller segments.
