Question

Q66) Which of the following statements are true with respect to Quantum Communications?

1. It is aimed at protecting information channels against eavesdropping.

2.It works on the principles of quantum physics.

3.It is more secure and incompatible with the conventional cryptographic techniques

• A. a) 1 only
• B. b)1 and 2 only
• C. c) All of the above
• D. d) None of the above

Answer 1

The correct option is B

b)1 and 2 only

Answer 66: B

Explanation: China recently launched a 712-km quantum communication line, stated to be the world’s longest secure
telecommunications network, which boasts of ultra-high security making it impossible to wiretap, intercept or crack the information
transmitted through them. The technology allows one to distribute sequence of random bit sequence of photons whose randomness
and secrecy are guaranteed by the laws of quantum physics. These sequences can then be used as secret keys with conventional
cryptography techniques to guarantee the confidentiality of data transmissions.