Create a custom practice set
Pick category, difficulty, number of questions, and time limit. Start instantly with your own quiz.
Generate QuizGK Question
Which protocol ensures data integrity and authenticity in digital communications?
- HTTP
- FTP
- Digital Signature
- SMTP
Answer: Digital Signature
Digital Signatures use public-key cryptography to verify message integrity (not altered) and authenticity (sender identity). Based on hashing and asymmetric encryption. Used in software distribution, financial transactions, legal documents. Distinct from digital certificates which bind public keys to identities.