Cryptography

Qus. 1 : Secret key encryption is also known as

1. Secret–encryption
2. Private encryption
3. Symmetric encryption
4. Asymmetric encryption

Qus. 2 : Encryption techniques improve a network

1. Performance
2. Reliability
3. Security
4. Longevity

Qus. 3 : What is cryptography?

1. It keeps our data safe
2. Converts data to secret code
3. It is used in email, debit card, credit card
4. All of the above

Qus. 4 : What is encryption?

1. The process of encoding plaintext into ciphertext
2. The process of decoding ciphertext into plaintext
3. The process of analyzing weather data
4. The process of generating random numbers

Qus. 5 : Which type of cryptography uses a single key for both encryption and decryption?

1. Symmetric cryptography
2. Asymmetric cryptography
3. Hash cryptography
4. Quantum cryptography

Qus. 6 : What is the purpose of a digital certificate in cryptography?

1. To encrypt data
2. To decrypt data
3. To provide proof of identity and authenticity
4. To analyze weather data

Qus. 7 : <p>Match the cryptographic terms with their descriptions.</p><p><br></p><table class="table table-bordered"><tbody><tr><td><b>Term</b></td><td><b>Description</b></td></tr><tr><td>1<span style="white-space:pre"> </span>Encryption</td><td>A<span style="white-space:pre"> </span>Ensures authenticity and integrity of a message</td></tr><tr><td>2<span style="white-space:pre"> </span>Decryption</td><td>B<span style="white-space:pre"> </span>Transforming ciphertext back into plaintext</td></tr><tr><td>3<span style="white-space:pre"> </span>Hashing</td><td>C<span style="white-space:pre"> </span>Creating a fixed-size digest from data</td></tr><tr><td>4<span style="white-space:pre"> </span>Digital Signature</td><td>D<span style="white-space:pre"> </span>Converting plaintext into ciphertext</td></tr></tbody></table><p><br></p>

1. 1 → B, 2 → C, 3 → D, 4 → A
2. 1 → D, 2 → B, 3 → C, 4 → A
3. 1 → C, 2 → A, 3 → B, 4 → D
4. 1 → A, 2 → D, 3 → B, 4 → C

Programs