2. What is the purpose of a digital signature? a) To protect electronic documents from unauthorized access b) To verify the identity of the sender C) To validate the authenticity and integrity of electronic data d) To ensure secure communication over the internet Bos birak

The correct answer is C) To validate the authenticity and integrity of electronic data.<br /><br />A digital signature is a mathematical scheme used to validate the authenticity and integrity of electronic data. It serves as a virtual equivalent of a handwritten signature or stamped seal, but much more secure. By using a digital signature, the sender of the data can assure the recipient that the data has not been tampered with and that it indeed comes from the claimed sender.<br /><br />Option A, "To protect electronic documents from unauthorized access," is not the primary purpose of a digital signature. While digital signatures can help prevent unauthorized access to the document, they do not provide encryption or access control mechanisms.<br /><br />Option B, "To verify the identity of the sender," is partially correct. While digital signatures do help verify the identity of the sender, their main purpose is to ensure the authenticity and integrity of the data.<br /><br />Option D, "To ensure secure communication over the internet," is not entirely accurate. While digital signatures can contribute to secure communication over the internet, they are not the sole means of ensuring security. Other security measures, such as encryption and secure protocols, are also necessary for secure communication.