212-81 practice question 2 of 30
Denis is looking at an older system that uses DES encryption. A colleague has told him that DES is insecure due to a small key size. What is the key length used for DES?
Full set: 206 questionsCorrect Answer:
C. 56
Explanation
56 https://en.wikipedia.org/wiki/DES The Data Encryption Standard is a symmetric-key algorithm for the encryption of digital data. Although its short key length of 56 bits makes it too insecure for applications, it has been highly influential in the advancement of cryptography.
Keep practicing
Take the free 212-81 practice test
Ten exam-style questions with answers and explanations, plus the exam facts and study guides.
More questions
Other 212-81 practice questions
- Question 1Which one of the following are characteristics of a hash function? (Choose two)
- Question 3When learning algorithms, such as RSA, it is important to understand the mathematics bein…
- Question 4Which of the following is a cryptographic protocol that allows two parties to establish a…
- Question 5What is the largest key size that AES can use?
- Question 6Which of the following would be the weakest encryption algorithm?
- Question 7Which of the following is not a key size used by AES?