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 the ideal property of a hash function?

  1. Deterministic

  2. Uniform distribution of hash values

  3. Fast computation

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

An ideal hash function should be deterministic, meaning it always generates the same hash value for the same input data item. It should also distribute hash values uniformly across the available range to minimize collisions. Additionally, it should be computationally efficient to compute the hash value quickly.

Multiple choice

Which of the following is an example of a non-cryptographic hash function?

  1. MD5

  2. SHA-256

  3. CRC32

  4. bcrypt
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

CRC32 (Cyclic Redundancy Check) is an example of a non-cryptographic hash function. It is commonly used for data integrity verification and error detection in data transmission and storage. Unlike cryptographic hash functions, CRC32 is not designed for security purposes and is vulnerable to collision attacks.

Multiple choice

Which of the following is a common application of hash functions?

  1. Database indexing

  2. Password storage

  3. Digital signatures

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

Hash functions have a wide range of applications, including database indexing for faster data retrieval, password storage to securely store user passwords, and digital signatures to ensure the authenticity and integrity of digital documents.

Multiple choice

What is the main disadvantage of using a hash function?

  1. Increased data storage space

  2. Slower data retrieval

  3. Potential for collisions

  4. Reduced data security
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The main disadvantage of using a hash function is the potential for collisions, where different data items generate the same hash value. Collisions can lead to data retrieval errors and reduced efficiency of the hash table. However, various techniques are employed to minimize the likelihood of collisions and manage them effectively.

Multiple choice

Which of the following is a cryptographic hash function?

  1. MD5

  2. SHA-256

  3. CRC32

  4. bcrypt
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

MD5 (Message Digest 5) is an example of a cryptographic hash function. Cryptographic hash functions are designed to be resistant to collision attacks and are commonly used for security purposes, such as password storage, digital signatures, and data integrity verification.

Multiple choice

When sharing personal information on social media, it is important to:

  1. Be mindful of what you share

  2. Share everything about your life

  3. Never share your personal information

  4. Share your personal information with everyone
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is important to be mindful of what personal information you share on social media. Some things, such as your address or phone number, should never be shared publicly. Other things, such as your thoughts and feelings, should be shared with caution.

Multiple choice

When using social media, it is important to:

  1. Be aware of your privacy settings

  2. Never change your privacy settings

  3. Share your personal information with everyone

  4. Ignore your privacy settings
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is important to be aware of your privacy settings on social media. This will help you control who can see your posts and information.

Multiple choice

When using social media, it is important to:

  1. Be aware of your digital footprint

  2. Ignore your digital footprint

  3. Delete your social media accounts

  4. Never post anything on social media
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is important to be aware of your digital footprint, which is the trail of data you leave behind when you use social media. This will help you manage your online reputation and protect your privacy.

Multiple choice

When using social media, it is important to:

  1. Be mindful of your online reputation

  2. Ignore your online reputation

  3. Delete your social media accounts

  4. Never use social media
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is important to be mindful of your online reputation, which is the way others perceive you based on your online presence. This will help you maintain a positive online image.

Multiple choice

Which of the following is a key principle of systems engineering and security?

  1. Defense in depth

  2. Least privilege

  3. Separation of duties

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

Systems engineering and security incorporates multiple principles to enhance security, including defense in depth, least privilege, and separation of duties.

Multiple choice

Which of the following is a common security threat to systems?

  1. Malware

  2. Phishing

  3. Social engineering

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

Malware, phishing, and social engineering are all common security threats that can compromise the security of systems.

Multiple choice

What is the role of risk management in systems engineering and security?

  1. To identify and assess security risks.

  2. To develop and implement security controls.

  3. To monitor and respond to security incidents.

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

Risk management plays a crucial role in systems engineering and security by identifying, assessing, and mitigating security risks.

Multiple choice

Which of the following is a security control commonly used in systems engineering?

  1. Encryption

  2. Authentication

  3. Authorization

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

Encryption, authentication, and authorization are all common security controls used to protect systems from unauthorized access and attacks.

Multiple choice

Which of the following is a key aspect of secure systems engineering?

  1. Secure design

  2. Secure implementation

  3. Secure testing

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

Secure systems engineering encompasses secure design, secure implementation, and secure testing to ensure the security of systems.

Multiple choice

Which of the following is a common security standard used in systems engineering?

  1. ISO 27001

  2. NIST SP 800-53

  3. PCI DSS

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

ISO 27001, NIST SP 800-53, and PCI DSS are widely recognized security standards used in systems engineering to ensure the security of systems and information.