Computer Knowledge ยท General Awareness

Information Security

4,143 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

Which of the following is NOT a common type of security technology used in mass transit systems?

  1. Surveillance cameras

  2. Facial recognition software

  3. Biometric scanners

  4. Metal detectors
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Facial recognition software is not as commonly used as other security technologies such as surveillance cameras, biometric scanners, and metal detectors in mass transit systems.

Multiple choice

Which cryptographic technique is commonly used to secure online transactions and digital signatures?

  1. Symmetric-key encryption

  2. Asymmetric-key encryption

  3. Hash functions

  4. Digital certificates
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Asymmetric-key encryption, also known as public-key cryptography, is widely used for secure online transactions and digital signatures. It involves the use of a public key for encryption and a private key for decryption.

Multiple choice

Which cryptographic algorithm is commonly employed for symmetric-key encryption in modern applications?

  1. AES (Advanced Encryption Standard)

  2. DES (Data Encryption Standard)

  3. RSA (Rivest-Shamir-Adleman)

  4. ECC (Elliptic Curve Cryptography)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

AES (Advanced Encryption Standard) is a widely adopted symmetric-key encryption algorithm used in modern applications. It is known for its high security and efficiency, making it suitable for various encryption tasks.

Multiple choice

What is the fundamental principle behind public-key cryptography?

  1. Shared secret key

  2. One-way functions

  3. Prime factorization

  4. Modular arithmetic
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Public-key cryptography relies on the concept of one-way functions, which are easy to compute in one direction but computationally infeasible to reverse. This property enables secure key exchange and encryption without the need for sharing a secret key.

Multiple choice

In the context of digital signatures, what is the primary role of a private key?

  1. Encryption

  2. Decryption

  3. Signing

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

In digital signatures, the private key is used for signing a message or data. The resulting digital signature can be verified using the corresponding public key, ensuring the authenticity and integrity of the signed information.

Multiple choice

Which cryptographic technique is commonly used to secure communication channels and protect data in transit?

  1. Steganography

  2. Quantum cryptography

  3. Network security protocols

  4. Transport Layer Security (TLS)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Transport Layer Security (TLS) is a widely adopted cryptographic protocol used to secure communication channels and protect data in transit. It establishes a secure connection between two parties, ensuring the confidentiality and integrity of transmitted data.

Multiple choice

What is the primary purpose of a digital certificate in cryptography?

  1. Encryption

  2. Decryption

  3. Authentication

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

A digital certificate is primarily used for authentication in cryptography. It binds a public key to the identity of the certificate holder, allowing other parties to verify the authenticity of the public key and establish secure communication.

Multiple choice

Which cryptographic technique is commonly employed for secure key exchange in public-key cryptography?

  1. Diffie-Hellman key exchange

  2. ElGamal encryption

  3. RSA encryption

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

Diffie-Hellman key exchange is a widely used cryptographic technique for secure key exchange in public-key cryptography. It allows two parties to establish a shared secret key over an insecure channel without revealing the key itself.

Multiple choice

What is the primary goal of steganography in cryptography?

  1. Encryption

  2. Decryption

  3. Hiding data in plain sight

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

Steganography is a cryptographic technique that focuses on hiding data within other data or media. Its primary goal is to conceal the existence of sensitive information by embedding it in seemingly innocuous content.

Multiple choice

Which cryptographic technique is commonly used to protect data stored on electronic devices?

  1. Full disk encryption

  2. File-level encryption

  3. Message authentication codes (MACs)

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

Full disk encryption is a cryptographic technique used to protect data stored on electronic devices. It encrypts the entire storage device, including the operating system and all user data, providing a high level of security against unauthorized access.

Multiple choice

What is the primary purpose of a one-time pad in cryptography?

  1. Encryption

  2. Decryption

  3. Key generation

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

A one-time pad is a cryptographic technique that provides perfect secrecy. It involves the use of a truly random key that is as long as the message being encrypted. When properly implemented, a one-time pad ensures that the encrypted message is unbreakable.

Multiple choice

Which cryptographic technique is commonly used to secure data in cloud storage systems?

  1. Server-side encryption

  2. Client-side encryption

  3. Homomorphic encryption

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

Server-side encryption is a cryptographic technique used to secure data stored in cloud storage systems. It involves encrypting data before it is uploaded to the cloud, ensuring that the data remains encrypted while stored on the cloud provider's servers.

Multiple choice

Which cryptographic technique is commonly employed for secure communication in virtual private networks (VPNs)?

  1. IPsec

  2. OpenVPN

  3. Secure Shell (SSH)

  4. Transport Layer Security (TLS)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

IPsec (Internet Protocol Security) is a widely used cryptographic technique for secure communication in virtual private networks (VPNs). It operates at the network layer and provides encryption, authentication, and key management services to protect data transmitted over public networks.

Multiple choice

Which of the following is NOT a good way to stay safe while using public Wi-Fi?

  1. Use a VPN

  2. Be aware of phishing scams

  3. Use strong passwords

  4. Connect to unsecured networks
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Connecting to unsecured networks is not a good way to stay safe while using public Wi-Fi. It is better to use a VPN, be aware of phishing scams, and use strong passwords.

Multiple choice

Which regulatory framework is designed to protect personal data in the European Union?

  1. GDPR (General Data Protection Regulation)

  2. HIPAA (Health Insurance Portability and Accountability Act)

  3. PCI DSS (Payment Card Industry Data Security Standard)

  4. SOX (Sarbanes-Oxley Act)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

GDPR is a comprehensive data protection law that regulates the processing of personal data within the EU and the European Economic Area (EEA).