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Science & TechnologyMediumAsked in: UPSC Civil Services · CSE Prelims 2018, GS Paper I

The identity platform 'Aadhaar' provides open "Application Programming Interfaces (APIs)". What does it imply? 1. It can be integrated into any electronic device. 2. Online authentication using iris is possible. Which of the statements given above is/are correct?

  1. A.1 only
  2. B.2 only
  3. C.Both 1 and 2
  4. D.Neither 1 nor 2

Correct answer

C. Both 1 and 2

Explanation

The correct answer is C, Both 1 and 2. Open APIs let any device or application connect to Aadhaar's authentication service, and that service accepts iris scans as well as fingerprints, OTP and demographic data.

An Application Programming Interface is a published set of rules by which one piece of software can request services from another. Because UIDAI publishes Aadhaar's APIs openly, banks, telecom firms and government departments can build them into micro-ATMs, tablets, phones and biometric devices without being tied to one vendor. Authentication is done online against the Central Identities Data Repository, and Aadhaar records ten fingerprints, both irises and a photograph at enrolment, so an iris scanner can confirm identity. This open design is part of the India Stack, along with eKYC, eSign and UPI.

A is wrong: it leaves out statement 2, though iris-based online authentication is supported.

B is wrong: it leaves out statement 1, the very point of offering open APIs.

D is wrong: both statements follow from Aadhaar's open API design.

Exam tip: Aadhaar authentication modes = demographic, OTP, fingerprint, iris, face; open APIs make it device-neutral.

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Q1.Science & TechnologyAsked in: UPSC Civil Services · CSE Prelims 2016, GS Paper IMedium

In the context of the developments in Bioinformatics, the term 'transcriptome', sometimes seen in the news, refers to

  1. A.a range of enzymes used in genome editing
  2. B.the full range of mRNA molecules expressed by an organism
  3. C.the description of the mechanism of gene expression
  4. D.a mechanism of genetic mutations taking place in cells
Show answer
Correct answer: B. the full range of mRNA molecules expressed by an organism

The transcriptome is the complete set of RNA transcripts, chiefly messenger RNA, made from the genes at a given time.

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Q2.Science & TechnologyAsked in: UPSC Civil Services · CSE Prelims 2024, GS Paper IEasy

Consider the following aircraft :

1. Rafale

2. MiG-29

3. Tejas MK-1

How many of the above are considered fifth generation fighter aircraft ?

  1. A.Only one
  2. B.Only two
  3. C.All three
  4. D.None
Show answer
Correct answer: D. None

Rafale, MiG-29 and Tejas Mk-1 are all fourth or 4.5 generation fighters; none of them is a fifth-generation aircraft. A fifth-generation fighter is defined by all-aspect stealth, internal weapons bays, supercruise and advanced sensor fusion.

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Q3.Science & TechnologyAsked in: UPSC Civil Services · CSE Prelims 2020, GS Paper IMedium

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 are about cryptocurrency 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?

  1. A.1 only
  2. B.1 and 2 only
  3. C.2 only
  4. D.1 and 3 only
Show answer
Correct answer: D. 1 and 3 only

A blockchain is an open, shared ledger that no single party controls, and anyone can build on a public blockchain without asking permission.

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Q4.Science & TechnologyAsked in: UPSC Civil Services · CSE Prelims 2020, GS Paper IHard

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:

  1. A.1, 2 and 3 only
  2. B.1, 2 and 4 only
  3. C.1, 3 and 4 only
  4. D.2, 3 and 4 only
Show answer
Correct answer: C. 1, 3 and 4 only

VLC sends data with visible light, which is fast and free of radio interference, but it works only over short distances.

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Q5.Science & TechnologyAsked in: UPSC Civil Services · CSE Prelims 2020, GS Paper IMedium

In the context of recent advances in human reproductive technology, "Pronuclear Transfer" is used for

  1. A.fertilization of egg in vitro by the donor sperm
  2. B.genetic modification of sperm producing cells
  3. C.development of stem cells into functional embryos
  4. D.prevention of mitochondrial diseases in offspring
Show answer
Correct answer: D. prevention of mitochondrial diseases in offspring

Pronuclear transfer is a mitochondrial replacement technique that stops a mother from passing faulty mitochondria to her child. Mitochondria have their own small DNA, inherited only from the mother; defects in it cause serious muscle, heart and brain diseases.

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