QUIZ 1

Which statement that describes symmetric encryption?

• It uses two different keys for encryption and decryption

• Messages encrypted with a specific key and only be decrypted by that same key

• Symmetric encryption offer non-repudiation protection due to its key sharing mechanism

• It relies on a private key and a public key for encryption and decryption

What is difference between asymmetric encryption and symmetric encryption?

• Asymmetric encryption uses the same key for encrypting or decrypting data

• Symmetric encryption relies on a private key and public key

• Asymmetric encryption is computationally slower than symmetric encryption

• Symmetric encryption offers confidentality protection through private key encryption system

Which of the following scenarios primarily benefits from using hashing?

• A company needs to send confidential documents over an insecure network.

• A website needs to securely store user login passwords.

• A cloud provider wants to detect if malware has infected a virtual machine.

• A user wants to ensure a downloaded software installer is the official version.

How does hashing help ensure data integrity?

• It makes the data unreadable without a specific decryption key.

• It creates a unique fingerprint of the data that changes if the data is modified.

• It compresses the data, making it smaller and harder to intercept.

• It automatically creates backups of the data in case of corruption.

What is digital signature?

• A handwritten signature scanned into a computer system.

• A series of random characters generated by a computer program.

• A secure hash function applied to a digital document.

• A photo of a person's signature attached to an electronic document.

Digital signature requires by combining

• Hashing

• Assymmetric encryption

• Symmetric encryption

• Encoding