GCC Class 2 Lesson 5 Quiz

What secret key type is shared by two parties over a secured channel before it's actually needed or used?
A. Public key.
B. Private SSH key.
C. Private key.
D. A pre-shared key (PSK).

Which function will always produce a fixed-length value regardless of the length of the original data?
A. Hash algorithm.
B. Asymmetric encryption.
C. XOR.
D. Symmetric encryption.

What is the standard used by the U.S. government to generate signatures for authenticating electronic documents?
A. PSK.
B. PGP.
C. DSA.
D. RSA.

Which encryption algorithm is most commonly used in small wireless devices, such as smartphones?
A. Quantum cryptography.
B. SHA.
C. 3DES.
D. Elliptic curve.

An encryption system encrypts data prior to transmitting it across the network. The receiving end of the transmission decrypts the data. If the two systems are both using a symmetric algorithm, what do you know about the keys in this scenario?
A. The system doesn't use keys to encrypt or decrypt data.
B. The system uses the same key to encrypt and decrypt data.
C. The system's keys are a very insecure method for encrypting data for transmission across the network.
D. The system uses different keys to encrypt and decrypt data.