1.
Which of the following is correct with respect to customers providing highly personal
information across the Internet through electronic commerce transactions?
(a) If a transaction is encrypted, any unauthorized parties intercepting the
transaction will take ten or more years to decrypt the information.
(b) Transactions are relatively secure between the consumer and a company's Web
site if the data is encrypted.
(c) It is impossible for anybody to see the transaction on the Internet except for the
intended Web site conducting the transaction.
(d) Customers should never provide charge card information when asked to
complete an electronic commerce transaction.
Correct answer is (b)
Your score on this question is:
0.00
Feedback:
See section 6.2 of the course notes.
2.
Which of the following reasons is (are) valid for why "iCarnegie" is a bad password?
I.
II.
III.
It is a word from the dictionary.
It does not contain numbers and symbols.
It is the name of an institution.
(a) II and III
(b) I, II, and III
(c) I and II only
(d) I and III only
Correct answer is (a)
Your score on this question is:
0.00
Feedback:
See section 6.2.3, subsection "Strong Passwords," in the course notes.
3.
How does a receiver of an encrypted message verify that the message originated
from the sender?
(a) The receiver compares the message hashed with the sender's signature.
(b) The receiver compares the received message with the sender's signature.
(c) The receiver compares the message hashed with the decrypted signature of the
sender.
(d) The receiver compares the message with the decrypted signature of the sender.
Correct answer is (c)
Your score on this question is:
8.33
Feedback:
See section 6.2.3, subsection "Digital Signatures," in the course notes.
4.
A certificate authority associates a specific _____ with the entity requesting the
certificate.
(a) digital signature
(b) private key
(c) password
(d) public key
Correct answer is (d)
Your score on this question is:
8.33
Feedback:
See section 6.2.3, subsection "Digital Certificates and Certificate
Authorities," in the course notes.
5.
With respect to public key encryption, which of the following is true of a server's
public key when transferring data across the Internet to a client computer?
(a) It is used by client computers when transferring encrypted data from that
particular server.
(b) It is not a very secure method of encryption, because every computer is aware
of a recipient's public key value and can decrypt the data.
(c) It is used by the server to decrypt information sent by a client.
(d) All clients and servers use the same public key when transferring encrypted data
on the Internet.
Correct answer is (a)
Your score on this question is:
0.00
Feedback:
See section 6.2.1 of the course notes.
6.
With respect to public key encryption, which of the following is true of a server's
private key when transferring data across the Internet from a client computer?
(a) It is used by all clients when transferring encrypted data to that server.
(b) The sender and receiver both use the private key to encrypt and decrypt a data
message sent between them.
(c) It is used only by the server to decrypt information received from a client.
(d) It is not a very secure method of encryption, because every computer is aware
of the recipient's private key.
Correct answer is (c)
Your score on this question is:
0.00
Feedback:
See section 6.2.1 of the course notes.
7.
Which of the following comparisons between public-key encryption schemes and
private-key encryption schemes is true?
(a) It is easier to decrypt data using private-key encryption schemes than
public-key encryption schemes.
(b) Private-key encryption schemes are more secure than public-key encryption
schemes.
(c) It takes longer to transmit encrypted data using private-key encryption schemes
than public-key encryption schemes.
(d) Public-key encryption schemes involve more computations than private-key
encryption schemes.
Correct answer is (d)
Your score on this question is:
8.33
Feedback:
See section 6.2.1, subsection "Hybrid Encryption Schemes," in the course
notes.
8.
Which of the following is (are) true about encryption of data?
I.
Given the high speed and low cost CPUs available, even the most complex
encrypted data is not entirely safe for a long period of time.
II.
The more bits in the key of the encryption algorithm, the harder it is to break
the encryption.
III.
In public key encryption, the sender and the receiver of encrypted data both
use the same key value to encrypt and decrypt the data.
(a) I and III only
(b) II and III only
(c) I, II, and III
(d) I and II only
Correct answer is (d)
Your score on this question is:
8.33
Feedback:
See section 6.2.1 of the course notes.
9.
To encrypt a message using public-key encryption scheme, which of the following
must be done?
(a) Encrypt the message using the receiver's private key.
(b) Encrypt the message using the sender's private key.
(c) Encrypt the message using the sender's public key.
(d) Encrypt the message using the receiver's public key.
Correct answer is (d)
Your score on this question is:
0.00
Feedback:
See section 6.2.1, subsection "Public Key Encryption Scheme," in the course
notes.
10.
With respect to security on the Internet, what is the purpose of digital signatures?
(a) To encrypt mail messages
(b) To verify the identity of a message sender
(c) To request receipts for all sent messages
(d) To post anonymous messages to bulletin boards
Correct answer is (b)
Your score on this question is:
8.33
Feedback:
See section 6.2.3 of the course notes.
11.
Which of the following statements is (are) true about smart cards?
I.
II.
They are vulnerable to Internet attacks.
They can encrypt data.
(a) None
(b) I only
(c) I and II
(d) II only
Correct answer is (d)
Your score on this question is:
8.33
Feedback:
See section 6.2.3, subsection "Smart Cards," in the course notes.
12.
Encryption is used to
(a) archive system files
(b) save storage space
(c) protect privacy by encoding data
(d) store data files in a vault
Correct answer is (c)
Your score on this question is:
8.33
Feedback:
See section 6.2.1 of the course notes.
Go to top of assessment.