Cryptography

1: An asymmetric-key (or public-key) cipher uses

1 Key

2 Keys

3 Keys

4 keys

2: The cryptography algorithms (ciphers) are divided into

two groups

four groups

one single group

none of the above

3: If 10 people needs to communicate securely with each other, how many number of secret keys will be required? (Secret Key Cryptography)

10

20

25

45

4: Which is the largest disadvantage of the symmetric Encryption?

More complex and therefore more time-consuming calculations

Less secure encryption function

Problem of the secure transmission of the Secret Key

All of the above

5: Which of the following is not a principle of data security?

Data Confidentiality

Data Integrity

Authentication

None of the above

6: If 10 people needs to communicate securely with each other, how many number of keys will be required? (Public Key Cryptography)

10

20

90

45

7: Using asymmetric encryption, Alice uses which key to send a message to Bob:

Alice's Public Key

Bob's Private Key

Bob's Public Key

Alice's Private Key

8: Which of the following is not possible through hash value?

Password Check

Digital Signatures

Original data value

Data Integrity check

9: Using asymmetric encryption, Alice uses which key to open a message received from Bob

Alice's Private Key

Alice's Public Key

Bob's Public Key

Bob's Private Key

10: Which of the following is not a property of Hash Function?

Pre-Image Resistance

Compression

Fixed Length Output

None of the above