World Science and Technology – Exercise – 2

World Science and Technology » Exercise – 2

51. Who created Pretty Good Privacy (PGP)?

(a) Phil Zimmermann
(b) Tim Berners-Lee
(c) Marc Andreessen
(d) Ken Thompson

Answer
Answer : (a)
Explanation
Explanation : Phil Zimmermann created the first version of PGP encryption in 1991. Pretty Good Privacy (PGP) is a data encryption and decryption computer program that provides cryptographic privacy and authentication for data communication. PGP is often used for signing, encrypting and decrypting texts, E-mails, files, directories and whole disk partitions to increase the security of e-mail communications. Let us discuss.
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52. Who co-created the UNIX operating system in 1969 with Dennis Ritchie?

(a) Bjarne Stroustrup
(b) Steve Wozniak
(c) Ken Thompson
(d) Niklaus Wirth

Answer
Answer : (c)
Explanation
Explanation : No answer description available for this question. Let us discuss.
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53. Who co-founded Hotmail in 1996 and then sold the company to Microsoft?

(a) Shawn Fanning
(b) Ada Byron Lovelace
(c) Sabeer Bhatia
(d) Ray Tomlinson

Answer
Answer : (c)
Explanation
Explanation : No answer description available for this question. Let us discuss.
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54. Who is largely responsible for breaking the German Enigma codes, created a test that provided a foundation for artificial intelligence?

(a) Alan Turing
(b) Jeff Bezos
(c) George Boole
(d) Charles Babbage

Answer
Answer : (a)
Explanation
Explanation : No answer description available for this question. Let us discuss.
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55. ‘DB’ computer abbreviation usually means ?

(a) Database
(b) Double Byte
(c) Data Block
(d) Driver Boot

Answer
Answer : (a)
Explanation
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