Computer Science - MOST IMPORTANT UPSC CSE Previous Year Questions

With reference to “Software as a Service (SaaS)”, consider the following statements:

1. SaaS buyers can customise the user interface and can change data fields.
2. SaaS users can access their data through their mobile devices.
3. Outlook, Hotmail and Yahoo Mail are form of SaaS
   Which of the statements given above are correct?

With reference to Web 3.0, consider the following statements:

1. Web 3.0 technology enables people to control their own data.
2. In Web 3.0 world, there can be blockchain based social networks.
3. Web 3.0 is operated by users collectively rather than a corporation.
   Which of the statements given above are correct?

Which one of the following is the context in which the term “qubit” is mentioned?

Consider the following communication technologies:

1. Closed-circuit Television
2. Radio Frequency Identification
3. Wireless Local Area Network
   Which of the above are considered Short-Range devices/technologies?

With the present state of development, Artificial Intelligence can effectively do which of the following?

1. Bring down electricity consumption in industrial units
2. Create meaningful short stories and songs
3. Disease diagnosis
4. Text-to-Speech Conversion
5. Wireless transmission of electrical energy
   Select the correct answer using the code given below:

With reference to Visible Light Communication (VLC) technology, which of the following statements are correct?

1. VLC uses electromagnetic spectrum wavelengths 375 to 780 nm
2. VLC is known as long-range optical wireless communication.
3. VLC can transmit large amounts of data faster than Bluetooth
4. VLC has no electromagnetic interference
   Select the correct answer using the code given below:

With reference to “Blockchain Technology” consider the following statements:

1. It is a public ledger that everyone can inspect, but which no single user controls
2. The structure and design of blockchain is such that all the data in it is about crypto currency only.
3. Applications that depend on basic features of blockchain can be developed without anybody’s permission.
   Which of the statements given above is/are correct?

With reference to communications technologies, what is/are the difference/differences between LTE (Long-Term Evolution) and VoLTE (Voice over Long-Term Evolution)?

1. LTE is commonly marketed as 3G and VoLTE is commonly marketed as advanced 3G.
2. LTE is data-only technology and VoLTE is voice-only technology.
   Select the correct answer using the code given below.

In the context of digital technologies for entertainment, consider the following statements:

1. In Augmented Reality (AR), a simulated environment is created and the physical world is completely shut out.
2. In Virtual Reality (VR), images generated from a computer are projected onto real-life objects or surroundings.
3. AR allows individuals to be present in the world and improves the experience using the camera of smart-phones or PCs.
4. VR closes the world, and transposes an individual, providing a complete immersion experience.
   Which of the statements given above is/are correct?

Consider the following statements:
A digital signature is __________

1. An electronic record that identifies the certifying authority issuing it
2. Used to serve as a proof of identity of an individual to access information or serve on Internet
3. An electronic method of signing an electronic document and ensuring that the original content is unchanged
   Which of the statements given above is/are correct?

In the context of wearable technology, which of the following tasks is/are accomplished by wearable devices?

1. Location identification of a person
2. Sleep monitoring of a person
3. Assisting the hearing impaired person
   Select the correct answer using the code given below.

In which of the following areas can GPS technology be used?

1. Mobile phone operations
2. Banking operations
3. Controlling the power grids
   Select the correct answer using the code given below:

When the alarm of your smartphone rings in the morning, you wake up and tap it to stop the alarm which causes your geyser to be switched on automatically. The smart mirror in your bathroom shows the day’s weather and also indicates the level of water in your overhead tank. After you take some groceries from your refrigerator for making breakfast, it recognises the shortage of stock in it and places an order for the supply of fresh grocery items. When you step out of your house and lock the door, all lights, fans, geysers and AC machines get switched off automatically. On your way to the office, your car warns you about traffic congestion ahead and suggests an alternative route, and if you are late for a meeting, it sends a message to your office accordingly.
In the context of emerging communication technologies, which one of the following terms best applies to the above scenario?

With reference to ‘LiFi’, recently in the news, which of the following statements is/are correct?

1. It uses light as the medium for high-speed data transmission.
2. It is a wireless technology and is several times faster than ‘WiFi’.
   Select the correct answer using the code given below.

With reference to ‘Near Field Communication (NFC) Technology’, which of the following statements is/are correct?

1. It is a contactless communication technology that uses electromagnetic radio fields.
2. NFC is designed for use by devices which can be at a distance of even a metre from each other.
3. NFC can use encryption when sending sensitive information.
   Select the correct answer using the codes given below.

In addition to fingerprint scanning, which of the following can be used in the biometric identification of a person?

1. Iris scanning
2. Retinal scanning
3. Voice recognition
   Select the correct answer using the code given below.

What is the difference between Bluetooth and Wi-Fi devices?

What is a “Virtual Private Network”?

Consider the following statements in respect of the digital rupee:

1. It is a sovereign currency issued by the Reserve Bank of India (RBI) in alignment with its monetary policy.
2. It appears as a liability on the RBI's balance sheet.
3. It is insured against inflation by its very design.
4. It is freely convertible against commercial bank money and cash.
   Which of the statements given above are correct?

Consider the following statements:
I. It is expected that the Majorana 1 chip will enable quantum computing.
II. Majorana 1 chip has been introduced by Amazon Web Services (AWS).
III. Deep learning is a subset of machine learning.
Which of the statements given above are correct?