
Revision for Chapter 4
Quiz
•
Computers
•
University
•
Practice Problem
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Hard
Kevin Wong
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27 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Each encryption method uses a specific algorithm, called a cipher, to encrypt and decrypt messages. A cipher is a series of well-defined steps used to encrypt and decrypt messages. There are three methods of creating ciphertext:
Transposition
Substitution
One-time pad
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
1st type of Encryption: _________ algorithms
Answer explanation
Symmetric algorithms - These algorithms use the same pre-shared key, sometimes called a secret key pair, to encrypt and decrypt data. Both the sender and receiver know the pre-shared key before any encrypted communication begins.
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
2nd type of Encryption: _________ algorithms
Answer explanation
Asymmetric algorithms - Asymmetrical encryption algorithms use one key to encrypt data and a different key to decrypt data. One key is public and the other is private. In a public-key encryption system, any person can encrypt a message using the public key of the receiver, and the receiver is the only one that can decrypt it using his private key. Parties exchange secure messages without needing a pre-shared key. Asymmetric algorithms are more complex. These algorithms are resource intensive and slower to execute.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(Cryptography)
Symmetrical versus Asymmetrical Encryption over handling more data
Symmetric encryption
Asymmetric encryption
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
List the types of encryption algorithm and provide the encryption standard for each class
Symmetric - Triple Digital Encryption Standard (3DES)
Symmetric - Advanced Encryption Standard (AES)
Symmetric - International Data Encryption Algorithm (IDEA)
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
List the other type of encryption algorithm and
provide the various encryption standard for each class
Asymmetric - Rivest_ Shamir-Adleman (RSA)
Asymmetric - Diffie-Hellman
Asymmetric - EIGamal
Asymmetric - Elliptic Curve Cryptography (ECC)
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
A product consultant had recommended to his team an algorithm that
is used in New Technology File System (NTFS).
Identify the algorithm recommended by the product consultant
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