Science Quiz 2

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. 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. Cost of restoration of the computer system in case of malware disrupting access to one’s computer 
2. Cost of a new computer if some miscreant wilfully damages it, if proved so 
3. Cost of hiring a specialised consultant to minimize the loss in case of cyber extortion 
4. Cost of defence in the Court of Law if any third party files a suit 

Select the correct answer using the code given below:

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.

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 a smart-phone or PC. 
4. VR closes the world, and transposes an individual, providing complete immersion experience. 

Which of the statements given above is/are correct?

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 server 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?

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:

1. Belle II experiment – Artificial Intelligence 
2. Blockchain Technology – Digital/Cryptocurrency 
3. CRISPR – Cas9 – Particle Physics 

Which of the pairs given above is/are correctly matched?

1. It is integrated into an electronic device. 
2. Online authentication using iris is possible. 

Which of the statements given above is/are correct?