Computer Knowledge ยท General Awareness

Information Security

4,634 Questions

Information security involves protecting computer systems and data from unauthorized access, cyber threats, and damage. It is a core part of the computer knowledge section in various banking and government exams. Practicing these concepts helps in understanding digital signatures, network security, and access control effectively.

Cybersecurity threatsAccess controlCryptography basicsSecurity risk managementDatabase protection

Information Security Questions

Multiple choice

What is a phishing scam?

  1. A scam in which criminals send emails or text messages that look like they are from legitimate companies.

  2. A scam in which criminals create fake websites that look like legitimate websites.

  3. A scam in which criminals install malware on your computer that steals your personal information.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Phishing scams are scams in which criminals send emails or text messages that look like they are from legitimate companies, create fake websites that look like legitimate websites, or install malware on your computer that steals your personal information.

Multiple choice

What is a malware scam?

  1. A scam in which criminals send emails or text messages that look like they are from legitimate companies.

  2. A scam in which criminals create fake websites that look like legitimate websites.

  3. A scam in which criminals install malware on your computer that steals your personal information.

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Malware scams are scams in which criminals install malware on your computer that steals your personal information.

Multiple choice

Which of the following is a common cloud security threat?

  1. Malware attacks

  2. Phishing attacks

  3. DDoS attacks

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Malware attacks, phishing attacks, and DDoS attacks are all common cloud security threats.

Multiple choice

Which of the following is a symmetric encryption algorithm?

  1. AES

  2. RSA

  3. ECC

  4. SHA-256
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

AES (Advanced Encryption Standard) is a symmetric encryption algorithm, meaning that the same key is used for both encryption and decryption.

Multiple choice

What is the purpose of a hashing function?

  1. To encrypt data

  2. To generate a digital signature

  3. To create a one-way hash value

  4. To compress data
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A hashing function takes an input of any size and produces a fixed-size output, called a hash value. Hash values are used to verify the integrity of data, as any change to the input data will result in a different hash value.

Multiple choice

Which of the following is an asymmetric encryption algorithm?

  1. AES

  2. RSA

  3. ECC

  4. SHA-256
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

RSA (Rivest-Shamir-Adleman) is an asymmetric encryption algorithm, meaning that different keys are used for encryption and decryption.

Multiple choice

What is the purpose of a digital signature?

  1. To encrypt data

  2. To generate a hash value

  3. To authenticate the sender of a message

  4. To compress data
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A digital signature is a mathematical scheme used to authenticate the sender of a message. It allows the receiver to verify that the message came from the sender and that it has not been tampered with.

Multiple choice

Which of the following is a common method for generating a random key for encryption?

  1. Using a pseudo-random number generator

  2. Using a hardware random number generator

  3. Using a combination of both

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A combination of a pseudo-random number generator and a hardware random number generator is often used to generate a random key for encryption, as this provides a high level of security.

Multiple choice

Which of the following is an example of a symmetric encryption algorithm?

  1. AES

  2. RSA

  3. ECC

  4. SHA-256
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

AES (Advanced Encryption Standard) is an example of a symmetric encryption algorithm.

Multiple choice

What is the purpose of a salt in cryptography?

  1. To make the encryption algorithm more secure

  2. To make the encryption algorithm faster

  3. To make the encryption algorithm easier to implement

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A salt is a random value that is added to the input of a hashing function before the hash value is generated. This makes it more difficult for an attacker to guess the hash value, even if they know the input.

Multiple choice

Which of the following is an example of an asymmetric encryption algorithm?

  1. AES

  2. RSA

  3. ECC

  4. SHA-256
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

RSA (Rivest-Shamir-Adleman) is an example of an asymmetric encryption algorithm.

Multiple choice

Which of the following is an example of a block cipher?

  1. AES

  2. RSA

  3. ECC

  4. SHA-256
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

AES (Advanced Encryption Standard) is an example of a block cipher.

Multiple choice

Which of the following is an example of a stream cipher?

  1. AES

  2. RSA

  3. ECC

  4. RC4
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

RC4 (Rivest Cipher 4) is an example of a stream cipher.

Multiple choice

Which of the following is an example of a public-key cryptosystem?

  1. AES

  2. RSA

  3. ECC

  4. SHA-256
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

RSA (Rivest-Shamir-Adleman) is an example of a public-key cryptosystem.

Multiple choice

Which of the following is an example of a private-key cryptosystem?

  1. AES

  2. RSA

  3. ECC

  4. SHA-256
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

AES (Advanced Encryption Standard) is an example of a private-key cryptosystem.