Computer Security - Cryptographic Tools Week3_Evaluation_T1
Authored by Rawia Salih
Computers
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the universal technique for providing confidentiality for transmitted data?
Hash functions
Symmetric encryption
Public-key encryption
Digital signatures
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the two requirements for secure use of symmetric encryption?
Strong encryption algorithm and public key
Secure key and public key
Secure key and digital signatures
Strong encryption algorithm and secure key
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the key length used in Data Encryption Standard (DES)?
256 bits
64 bits
56 bits
128 bits
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the drawback of using a 56-bit key in DES?
Low encryption speed
Vulnerability to brute-force attack
Incompatibility with modern systems
Limited data block size
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the key length used in Triple DES (3DES)?
56 bits
64 bits
168 bits
128 bits
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which encryption algorithm was selected as the Advanced Encryption Standard (AES) in 2001?
RC4
Rijndael
3DES
DES
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main implementation of Stream Cipher?
Rijndael
Vernam Cipher
Feistel Cipher
RC4
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