004_Non-repudiation - CompTIA Security+ SY0-701 - 1.2

What does hashing transform an input into?

• A variable-length string

• A fixed-size string of characters

• A compressed file

• An encrypted message

Which of the following is NOT a property of hashing?

• Deterministic

• Fast computation

• Reversibility

• Collision resistance

What is the significance of collision resistance in hashing?

• It allows easy decryption

• It prevents two inputs from producing the same hash

• It speeds up computation

• It compresses data

What is the purpose of a digital signature?

• To encrypt the entire message

• To verify the authenticity and integrity of digital messages

• To replace the need for passwords

• To create a digital watermark

What is non-repudiation?

• Ensuring a message is encrypted

• Ensuring a sender cannot deny sending a message

• Ensuring a message is delivered quickly

• Ensuring a message is deleted after reading

What is the function of Public Key Infrastructure (PKI) in digital signatures?

• To encrypt messages

• To manage keys and verify authenticity

• To create digital watermarks

• To replace the need for passwords

What is the first step in creating a digital signature?

• Encrypting the message

• Creating a hash of the message

• Sending the message to the recipient

• Using a digital certificate

What is one application of non-repudiation in emails?

• Ensuring the email is encrypted

• Ensuring the sender cannot deny having sent an email

• Ensuring the email is delivered quickly

• Ensuring the email is free of viruses

What is the purpose of hashing in non-repudiation?

• To encrypt data

• To ensure integrity

• To speed up processing

• To reduce data size

What is the purpose of digital signatures in non-repudiation?

• To verify authenticity and identify the sender

• To encrypt the message

• To compress the data

• To anonymize the sender