N10-005 · Question #933
A user wants to send information and ensure that it was not modified during transmission. Which of the following should be implemented?
The correct answer is B. Digital signatures. Digital signatures provide data integrity and authenticity. The sender hashes the message and encrypts that hash with their private key to produce the signature. The recipient decrypts it with the sender's public key and recomputes the hash - if they match, the data was not…
Question
A user wants to send information and ensure that it was not modified during transmission. Which of the following should be implemented?
Options
- AMAC filtering
- BDigital signatures
- CMS-CHAP
- DCHAP
How the community answered
(19 responses)- B95% (18)
- D5% (1)
Explanation
Digital signatures provide data integrity and authenticity. The sender hashes the message and encrypts that hash with their private key to produce the signature. The recipient decrypts it with the sender's public key and recomputes the hash - if they match, the data was not altered in transit. Any modification to the message invalidates the signature. MAC filtering restricts network access by MAC address and has nothing to do with data integrity. CHAP and MS-CHAP are authentication protocols (used to verify identity during login) and do not protect message content from modification.
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