Q331. The "Internet of Things" (IoT) fundamentally refers to:
Science and Technology: RAS Prelims MCQs
1113 RAS Prelims practice MCQs on science and technology are on this page, in 6 chapters. They cover the basics of everyday science, computers and information technology, defence and space technology in India, genetics, biotechnology and nanotechnology, science and technology policies and government programmes, and recent advances with Indian contributors and indigenisation. Each question has an answer and an explanation.
Practice questions based on the RPSC RAS Prelims syllabus. They follow the exam pattern but are not past-paper questions.
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Q332. 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?
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.
Q333. 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.
Q334. 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.
Q335. 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.
Q336. 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.
Q337. Identify the odd one out among these communication protocols.
Explanation
IoT devices use specialized communication protocols like MQTT, CoAP, and Zigbee, which are designed for low power consumption and efficient data transmission across wireless networks. These protocols are essential for connecting diverse sensors and devices. HDMI, however, is a physical interface and cable standard used for transmitting high-definition video and audio signals between devices, serving an entirely different.
Q338. Given below are two statements regarding IoT components.
Statement I: In IoT, sensors are used to collect data from the environment (e.g., temperature).
Statement II: Actuators are used to perform a physical action based on the data (e.g., turning on a motor).
Which of the above statement(s) is/are correct?
Statement I: In IoT, sensors are used to collect data from the environment (e.g., temperature).
Statement II: Actuators are used to perform a physical action based on the data (e.g., turning on a motor).
Which of the above statement(s) is/are correct?
Explanation
IoT systems rely on two primary types of hardware to interact with the world. Sensors are used to gather information from the environment, such as light, temperature, or motion. Actuators, conversely, are used to perform physical actions based on that data, such as opening a valve or turning on a light. Together, these components allow IoT systems to.
Q339. Which of the following is not directly a functional component required for an IoT device to operate?
Explanation
Operating an IoT device requires core components like sensors for data collection, network connectivity for communication, and a processing unit to manage operations. These elements work together to enable the device’s "smart" functionality. Mechanical punch cards are an obsolete technology used in early computer generations for data entry and have no role in the digital, wireless architecture.
Q340. What was a major structural effect on network infrastructure driven by the rapid proliferation of IoT devices?
Explanation
The rapid proliferation of billions of IoT devices created a massive demand for unique IP addresses, far exceeding the capacity of the aging IPv4 system. This directly drove the global adoption of IPv6, which offers a virtually unlimited number of addresses. By providing a unique identifier for every connected object, IPv6 ensures that the IoT ecosystem can.Answer key for these questions
| Q | Correct answer |
|---|---|
| 331 | (c) Network of objects with sensors |
| 332 | (d) I, II, and III |
| 333 | (c) IoT devices cannot be compromised to form botnets for DDoS attacks. |
| 334 | (b) Smart Home IoT automation |
| 335 | (d) RFID (Radio Frequency Identification) |
| 336 | (a) Enhancement of industrial processes |
| 337 | (c) HDMI |
| 338 | (a) Both Statement I and II are correct |
| 339 | (d) Mechanical punch cards |
| 340 | (b) Adoption of the IPv6 protocol |
Key facts from Science and Technology
- The RPSC paper is General Knowledge and General Science, so science questions come with a strong dose of applied and recent topics.
- Everyday science questions test the laws and terms of physics, chemistry and biology through examples.
- Defence and space questions pair a missile, satellite or mission with its year and organisation.
- Policy questions ask for the year, the body and the aim of schemes like STIP, the National Quantum Mission and BioE3.
- Health, environment and agriculture are on a separate page, with their own chapters.
Frequently asked questions
How many RAS Prelims practice MCQs are there on Science and Technology?
This page has 1113 practice MCQs on Science and Technology. Each has the correct answer, and most have an explanation.
Which chapters does the science and technology set cover?
Six chapters: basics of everyday science; computers, information and communication technology; defence and space technology in India; genetics, biotechnology and nanotechnology; science and technology policies and government programmes; and recent advances, Indian contributors and indigenisation.
Is science and technology part of the RAS Prelims syllabus?
Yes. The RPSC paper is called General Knowledge and General Science, and its syllabus lists science and technology topics along with environment, health, agriculture and government programmes, so questions can come from any of these areas.
How should I prepare science for RAS Prelims?
Revise the concepts by examples, then learn the missions, schemes and scientists with their year and organisation. Attempt each chapter, read the explanations and keep a list of the facts you missed.