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  Effective Writing NPTEL Assignment 4 Answers 2022: –   All the Answers Provided here to help the students just as a reference. we request you to mark your assignment on your own. NPTEL Effective Writing Assignment 4 Answers:- Q1.  A salutation is a greeting used in written or non-written communication. Salutations can be formal or informal. The most common form of salutation is “Dear” followed by the recipient’s given name or Title. For each style of salutation there is an accompanying style of complimentary close, known as Valediction. Salutation is a Part of? 1) Essay writing  2) Letter writing Select the correct Answer using the code below:  (1) only  (2) only  Both (1) and (2) are correct.  Neither (1) nor (2) is correct. Answer:- Q2.  Metonymy is a figure of speech in which a thing or concept is referred to by the name of something closely associated with that thing or concept. Find the correct usage of Metonymy in the following senten...

  NPTEL Blockchain and its Applications Assignment 4 Answers:- In this article, we have provided answers of Blockchain and its applications assignment 4 NPTEL Blockchain and its Applications Assignment 4 Answers Q1.  Double spending is reusing digital assets intentionally or inadvertently. True or False? a) True b) False Q2.  In blockchain, cryptography ensures authenticity of a transaction, and also helps prevent double-spend. Is the above statement True or False? a) True b) False Answer: Q3.  Which is/are the examples of the double-spending attack? a) Anita has a total of 80 unspent bitcoins from two different transactions with an equal amount of bitcoins each. She sends the entire amount each to Deepak and Tanmay from one of the transaction b) Bibhu bought a car using ‘p’ bitcoins. On delivery, the bitcoins are transferred from his wallet to the shopper’s wallet. Simultaneously, he uses that bitcoins for another purchase c) Anita and Bibhu each have 40 unspent bit...