Q191. How does Augmented Reality (AR) fundamentally differ from Virtual Reality (VR)?
Computers, Information and Communication Technology: RAS Prelims MCQs
200 RAS Prelims MCQs on computers, information and communication technology cover the generations of computers, the parts of the CPU, memory types and networking. The first and second generations, analog computers, the control unit, cache and RAM, the memory hierarchy and the SSD are asked as definitions and sequences, with the explanations giving the reason for each design.
Practice questions based on the RPSC RAS Prelims syllabus. They follow the exam pattern but are not past-paper questions.
Showing 191–200 of 200 questions
Q192. Consider the following concepts related to Quantum Computing:
I. Qubits (Quantum bits) can exist in multiple states simultaneously due to superposition.
II. Entanglement allows qubits that are separated by distance to interact instantaneously.
III. Quantum computers perform calculations identically to classical binary computers, just faster.
IV. Quantum computing poses a future threat to current cryptographic standards (like RSA).
V. Decoherence is a major challenge in maintaining quantum states.
Which of the above statement(s) is/are correct?
I. Qubits (Quantum bits) can exist in multiple states simultaneously due to superposition.
II. Entanglement allows qubits that are separated by distance to interact instantaneously.
III. Quantum computers perform calculations identically to classical binary computers, just faster.
IV. Quantum computing poses a future threat to current cryptographic standards (like RSA).
V. Decoherence is a major challenge in maintaining quantum states.
Which of the above statement(s) is/are correct?
Explanation
Quantum computing utilizes qubits that can exist in multiple states simultaneously due to superposition and interact via entanglement. These systems perform calculations fundamentally differently from classical computers, posing a significant future threat to current encryption standards like RSA. While powerful, quantum computers face the major challenge of decoherence, where external interference disrupts the fragile quantum states needed for.
Q193. Identify the incorrect statement regarding the "Metaverse."
Explanation
The Metaverse is envisioned as a decentralized network of interconnected 3D virtual worlds where users can interact socially and economically. It often incorporates technologies like VR, AR, and blockchain-based digital assets. It is not owned or controlled by any single government or corporation; instead, it is expected to be a collaborative ecosystem developed by many different.
Q194. A surgeon uses a specialized headset during an operation that projects real-time 3D MRI scans precisely over the patient’s body, and the surgeon can interact with these holograms. This is an application of:
Explanation
Mixed Reality is a technology that blends the physical and digital worlds, allowing real and virtual objects to coexist and interact in real-time. A surgeon using a headset to project and interact with 3D MRI scans over a patient’s body is a prime example. Unlike pure VR, MR keeps the user connected to the real environment while.
Q195. In the context of quantum computing, the term "Quantum Supremacy" refers to:
Explanation
Quantum Supremacy is a milestone in computer science reached when a quantum computer performs a specific calculation that is practically impossible for the most powerful classical supercomputer to complete in a reasonable timeframe. This achievement demonstrates the fundamental power of quantum mechanics to solve certain types of complex problems far more efficiently than traditional binary-based computing architectures.
Q196. The technology that involves constructing a three-dimensional solid object from a digital file by successively adding material layer by layer is known as:
Explanation
3D printing, also known as additive manufacturing, is a process that creates three-dimensional solid objects by adding material layer by layer from a digital file. This is the opposite of traditional subtractive manufacturing, which involves cutting away material. 3D printing allows for the creation of complex shapes and customized parts, revolutionizing prototyping, manufacturing, and even medical.
Q197. Given below are two statements regarding quantum communication.
Statement I: Quantum cryptography relies on the principles of quantum mechanics to secure data.
Statement II: The fundamental property used in Quantum Key Distribution (QKD) is that observing or measuring a quantum state alters it, thus revealing any eavesdropping attempts.
Which of the above statement(s) is/are correct?
Statement I: Quantum cryptography relies on the principles of quantum mechanics to secure data.
Statement II: The fundamental property used in Quantum Key Distribution (QKD) is that observing or measuring a quantum state alters it, thus revealing any eavesdropping attempts.
Which of the above statement(s) is/are correct?
Explanation
Quantum cryptography uses the laws of physics to provide exceptionally secure data transmission. A key method is Quantum Key Distribution, which relies on the fact that any attempt to observe or measure a quantum state will fundamentally alter it. This ensures that any eavesdropping is immediately detected, providing a level of security that is theoretically impossible to.
Q198. Which of the following correctly describes a practical application of IoT and AR combined in industrial maintenance?
Explanation
Combining IoT and AR in industrial settings can significantly improve maintenance and efficiency. For example, a technician wearing smart glasses can see real-time data from IoT sensors overlaid directly onto the machinery they are repairing. This "heads-up" display provides vital information and instructions without the technician needing to look away from their work, reducing errors.
Q199. Which of the following is NOT a typical feature or requirement for experiencing true Virtual Reality (VR)?
Explanation
True Virtual Reality requires a head-mounted display and motion tracking sensors to create a fully immersive 360-degree digital environment. This immersive experience is achieved by completely blocking out the user’s view of the physical real-world surroundings and replacing it with computer-generated visuals. If a user can still see the physical world clearly, it is not.
Q200. What is a highly anticipated effect of mature quantum computing on current global cybersecurity infrastructure?
Explanation
Mature quantum computing is expected to have a profound effect on global cybersecurity because its immense processing power could easily break the mathematical problems that protect current asymmetric encryption standards. This would make many existing security protocols obsolete, requiring the development and implementation of new, quantum-resistant cryptographic methods to protect sensitive data and.Answer key for these questions
| Q | Correct answer |
|---|---|
| 191 | (a) Real-world overlay vs fully immersive environment |
| 192 | (a) I, II, IV, and V only |
| 193 | (b) It is entirely owned and controlled by a single government entity globally. |
| 194 | (a) Mixed Reality (MR) |
| 195 | (c) Beyond classical capability |
| 196 | (d) 3D Printing (Additive Manufacturing) |
| 197 | (a) Both Statement I and II are correct |
| 198 | (b) Smart glass sensor overlays |
| 199 | (d) Complete sensory visibility of the physical real-world environment |
| 200 | (a) Asymmetric encryption obsolescence |
Key facts from Computers, Information and Communication Technology
- First-generation computers used vacuum tubes; the second generation moved to transistors.
- Analog computers work on continuous variable data rather than discrete binary data.
- The Control Unit directs and coordinates the operations of the CPU.
- Cache memory gives the fastest access to the CPU; the hierarchy from fastest to slowest is registers, cache, RAM and magnetic disk.
- Adding more RAM to a system with many page faults reduces its dependence on virtual memory.
- An SSD differs from an HDD by the use of NAND flash memory.
Frequently asked questions
How many RAS Prelims practice MCQs are there on Computers, Information and Communication Technology?
This page has 200 practice MCQs on Computers, Information and Communication Technology (Science and Technology). Each has the correct answer, and most have an explanation.
What was used in first-generation computers?
Vacuum tubes. They were large, used much power and produced heat. The second generation replaced them with transistors, which were smaller, faster and more reliable, and later generations moved to integrated circuits and microprocessors.
Which memory is fastest for the CPU?
Cache memory, apart from the registers inside the CPU. The memory hierarchy from fastest to slowest is registers, cache, RAM and magnetic disk, and capacity increases as speed falls.
How does an SSD differ from an HDD?
An SSD stores data in NAND flash memory with no moving parts, while a hard disk drive uses spinning magnetic platters. As a result an SSD is faster, quieter and more resistant to shock.