Chapter 9 Information Systems Controls for Systems ReliabilityPart 2: Confidentiality and Privacy
Accounting Information Systems 12Th Ed by Marshall B. Romney - Test Bank
Accounting Information Systems, 12e (Romney/Steinbart)
Chapter 9 Information Systems Controls for Systems ReliabilityPart 2: Confidentiality and
Privacy
1) Concerning virtual private networks (VPN), which of the following is not true?
A) VPNs provide the functionality of a privately owned network using the Internet.
B) Using VPN software to encrypt information while it is in transit over the Internet in effect creates
private communication channels, often referred to as tunnels, which are accessible only to those parties
possessing the appropriate encryption and decryption keys.
C) The cost of the VPN software is much less than the cost of leasing or buying the infrastructure
(telephone lines, satellite links, communications equipment, etc.) needed to create a privately owned
secure communications network.
D) It is more expensive to reconfigure VPNs to include new sites than it is to add or remove the
corresponding physical connections in a privately owned network.
Answer: D
Page Ref: 264
Objective: Learning Objective 3
Difficulty : Moderate
AACSB: Analytic
2) Which of the following is not associated with asymmetric encryption?
A) No need for key exchange
B) Public keys
C) Private keys
D) Speed
Answer: D
Page Ref: 260
Objective: Learning Objective 3
Difficulty : Easy
AACSB: Analytic
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.
Answer: D
Page Ref: 262
Objective: Learning Objective 3
Difficulty : Moderate
AACSB: Analytic
, 4) Which of the following describes one weakness of encryption?
A) Encrypted packets cannot be examined by a firewall.
B) Encryption protects the confidentiality of information while in storage.
C) Encryption protects the privacy of information during transmission.
D) Encryption provides for both authentication and non-repudiation.
Answer: A
Page Ref: 264
Objective: Learning Objective 3
Difficulty : Moderate
AACSB: Analytic
5) Using a combination of symmetric and asymmetric key encryption, Chris Kai sent a report to her
home office in Syracuse, New York. She received an email acknowledgement that the document had
been received and then, a few minutes later, she received a second email that indicated that the hash
calculated from the report differed from that sent with the 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.
Answer: C
Page Ref: 261
Objective: Learning Objective 3
Difficulty : Difficult
AACSB: Analytic
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.
Answer: B
Page Ref: 260
Objective: Learning Objective 3
Difficulty : Moderate
AACSB: Analytic
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