E – Commerce MCQs

16. Question

EDI use




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17. Question

By Electronic Commerce we mean:




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18. Question

Certification of Digital signature by an independent authority is needed because




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19. Question

In public key encryption if A wants to send an encrypted message




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20. Question

The following ciphertext was received. The plaintext was permuted using permutation (34152) and substitution. Substitute character by character +3 (A →D, etc). The plain text after decryption is: Cipher text : PDLJDLXHVQC




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