9,654 RAS Prelims practice MCQs with the correct answer and a clear explanation for each. Filter by subject and chapter.
Practice questions based on the RPSC RAS Prelims syllabus. They follow the exam pattern but are not past-paper questions.
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RAS PrelimsScience and Technology · Computers, Information and Communication Technology
Q1281. Given below are two statements regarding blockchain access. Statement I: A public blockchain is completely open and anyone can join and participate in the network. Statement II: A private blockchain restricts participation and is typically controlled by a single organization. Which of the above statement(s) is/are correct?
Explanation
Public blockchains are open networks where anyone can join, participate in consensus, and view the entire transaction history, as seen in Bitcoin. Private blockchains, however, are restricted networks where access and participation are controlled by a single entity or consortium. Both models offer different advantages in terms of transparency, security, and performance, depending on the specific needs of.
RAS PrelimsScience and Technology · Computers, Information and Communication Technology
Q1282. Match List I with List II.
Blockchain Concept
Description
A. Node
i. A digital representation of value or an asset
B. Miner
ii. A participant who validates and adds new blocks
C. Token
iii. A record-keeping book of transactions
D. Ledger
iv. A computer connected to the blockchain network
Explanation
Blockchain relies on several key components: nodes provide the network infrastructure, while miners or validators secure the network and add new blocks. Tokens represent digital assets or value within the system, and the ledger serves as the comprehensive record of all transactions. Together, these elements create a robust and transparent environment for secure digital interactions and decentralized governance.
RAS PrelimsScience and Technology · Computers, Information and Communication Technology
Q1283. Which of the following is not a recognized practical application of Blockchain technology?
Explanation
Blockchain technology has wide-ranging applications, including securing supply chains, powering cryptocurrencies, and enabling transparent voting systems. These uses leverage its decentralized and immutable nature. However, compiling programming code like C++ into machine language is a traditional software development task performed by a compiler. This process is entirely unrelated to the distributed ledger functions or cryptographic mechanisms that define.
RAS PrelimsScience and Technology · Computers, Information and Communication Technology
Q1284. Which consensus mechanism is most appropriate for describing the original Bitcoin network where miners compete to solve complex mathematical puzzles?
Explanation
Proof of Work is the original consensus mechanism used by the Bitcoin network, requiring participants called miners to solve complex mathematical puzzles to validate transactions and create new blocks. This process ensures network security by making it computationally expensive to launch an attack. While other mechanisms like Proof of Stake have since emerged, PoW remains the foundational protocol for.
RAS PrelimsScience and Technology · Computers, Information and Communication Technology
Q1285. The "Internet of Things" (IoT) fundamentally refers to:
Explanation
The Internet of Things refers to a vast network of physical objects embedded with sensors, software, and other technologies that allow them to connect and exchange data with other devices over the internet. These "smart" objects can range from simple household appliances to complex industrial tools. By enabling these devices to communicate, IoT creates a more integrated and.
RAS PrelimsScience and Technology · Computers, Information and Communication Technology
Q1286. Consider the following components of an IoT architecture: I. Sensors/Devices that collect data. II. Connectivity protocols (like Wi-Fi, Bluetooth) to transmit data. III. Cloud/Data Processing centers that analyze the collected data. Which of the above statement(s) is/are correct for a standard IoT system to function?
Explanation
A functional IoT system requires three core components: sensors to collect environmental data, connectivity protocols to transmit that data, and processing centers to analyze the information and trigger actions. This integrated architecture allows for real-time monitoring and automation across various applications. Without any of these elements, the system would be unable to gather, share, or make.
RAS PrelimsScience and Technology · Computers, Information and Communication Technology
Q1287. Identify the incorrect statement regarding IoT security challenges.
Explanation
IoT devices face significant security challenges, including weak default passwords and a lack of encryption, which increases the overall attack surface for hackers. Contrary to the idea that they cannot be compromised, large groups of insecure IoT devices are frequently targeted to form massive botnets used in Distributed Denial of Service attacks. Protecting data privacy remains a critical concern.
RAS PrelimsScience and Technology · Computers, Information and Communication Technology
Q1288. A user sets their thermostat to automatically lower the temperature when their smartphone GPS indicates they have left the house. This is a practical application of:
Explanation
Smart home automation is a practical application of IoT where household devices communicate with each other to improve convenience and efficiency. A thermostat adjusting itself based on a user’s smartphone location is a perfect example of this interconnectedness. By using data from various sensors and devices, smart homes can create personalized environments that automatically respond to the.
RAS PrelimsScience and Technology · Computers, Information and Communication Technology
Q1289. Which early technology paved the way for modern IoT by allowing items to be tracked wirelessly using electromagnetic fields to identify tags?
Explanation
Radio Frequency Identification is a foundational technology for IoT, using electromagnetic fields to automatically identify and track tags attached to objects. These tags contain electronically stored information that can be read wirelessly. This early innovation paved the way for modern IoT by enabling the seamless tracking of goods in supply chains and the identification of physical items without.
RAS PrelimsScience and Technology · Computers, Information and Communication Technology
Q1290. Which statement accurately describes the Industrial Internet of Things (IIoT)?
Explanation
The Industrial Internet of Things focuses specifically on the application of IoT technologies in manufacturing and industrial settings. By integrating sensors and advanced analytics into factory equipment and supply chains, IIoT enhances operational efficiency, improves safety, and reduces downtime through predictive maintenance. This technological shift is a key driver of the Fourth Industrial Revolution, transforming traditional manufacturing into smart.
Answer key for these questions
Q
Correct answer
1281
(a) Both Statement I and II are correct
1282
(a) A-iv, B-ii, C-i, D-iii
1283
(b) Compiling C++ code into machine language
1284
(a) Proof of Work (PoW)
1285
(c) Network of objects with sensors
1286
(d) I, II, and III
1287
(c) IoT devices cannot be compromised to form botnets for DDoS attacks.
1288
(b) Smart Home IoT automation
1289
(d) RFID (Radio Frequency Identification)
1290
(a) Enhancement of industrial processes
Frequently asked questions
How many RAS Prelims practice MCQs are there on RAS Prelims?
This page has 9654 practice MCQs on the RAS Prelims syllabus. Each has the correct answer, and most have an explanation.
How should I practise MCQs for RAS Prelims?
Attempt each question first, then open the answer and read the explanation. Practise one chapter at a time, note the facts you got wrong and revise them. Repeat the chapter after a few days.
Are these actual RAS Prelims past-paper questions?
No. These are practice questions written for the RAS Prelims syllabus. They follow the pattern the exam uses: factual questions, statement-based questions, match-the-list and assertion-reason.
