3) The system and processes used to issue and manage asymmetric keys and digital certificates
are known as
A) asymmetric encryption.
B) certificate authority.
C) digital signature.
D) public key infrastructure.
4) Identify one weakness of encryption below.
A) Encrypted packets cannot be examined by a firewall.
B) Encryption provides for both authentication and non-repudiation.
C) Encryption protects the privacy of information during transmission.
D) Encryption protects the confidentiality of information while in storage.
5) Using a combination of symmetric and asymmetric key encryption, Sofia Chiamaka sent a
report to her home office in Bangalore, India. She received an e-mail acknowledgement that her
report had been received, but a few minutes later she received a second e-mail that contained a
different hash total than the one associated with her report. This most likely explanation for this
result is that
A) the public key had been compromised.
B) the private key had been compromised.
C) the symmetric encryption key had been compromised.
D) the asymmetric encryption key had been compromised.
6) Encryption has a remarkably long and varied history. The invention of writing was apparently
soon followed by a desire to conceal messages. One of the earliest methods, attributed to an
ancient Roman emperor, was the simple substitution of numbers for letters, for example A = 1,
B = 2, etc. This is an example of
A) a hashing algorithm.
B) symmetric key encryption.
C) asymmetric key encryption.
D) a public key.