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
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A key that no one can use
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Front Door Key
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Password
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A key that is published for any one to use
D
Correct answer
Explanation
In asymmetric cryptography, a public key is made available to everyone so they can encrypt messages or verify signatures, while the private key remains secret.
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When the keys to encode and decode the message are the same.
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When different keys are used to encode and decode a message.
A
Correct answer
Explanation
Symmetric encryption uses the same secret key for both the encryption of plaintext and the decryption of ciphertext.
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File compression
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Decompressing a file
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Sorting information A to Z
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Scrambling information so intended person can read
D
Correct answer
Explanation
Encryption is the process of converting information into a secret code (ciphertext) to prevent unauthorized access, ensuring only authorized parties can read it.
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DES, 3DES, AES
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MD5, AES, RSA
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AES, RSA, PKI
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DES, 3DES, PKI
A
Correct answer
Explanation
DES, 3DES, and AES are all well-known symmetric encryption algorithms used to protect data confidentiality.
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asymmetric
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public-key
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Diffie-Hellman
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shared-secret
D
Correct answer
Explanation
A shared-secret key is the fundamental concept of symmetric encryption, where the same key is used for both encryption and decryption.
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Just sounds cool?
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Only someone that isn't authorized can read it
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Only someone that is authorized can read it
C
Correct answer
Explanation
The primary goal of encryption is to secure data so that only those with the correct authorization (the key) can access and read the original information.
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IPsec
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symmetric
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shared secret
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asymmetric
D
Correct answer
Explanation
Asymmetric encryption (public-key cryptography) uses a pair of keys (public and private) to provide security services like authentication and confidentiality.
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Symmetric method
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Hash method
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Asymmetric method
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Brute Force method
B
Correct answer
Explanation
Symmetric encryption uses the same secret key for both encryption and decryption. The statement is false because it implies a specific type of key usage that is often contrasted with asymmetric encryption.
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Prevent interception
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denies the message content to the interceptor.
A
Correct answer
Explanation
Encryption does not prevent the interception of data; it only ensures that the intercepted data remains unreadable to unauthorized parties. The question is poorly phrased, but option A correctly identifies what encryption fails to stop.
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the process of encoding messages or information
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the game telephone
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money
A
Correct answer
Explanation
Encryption is defined as the process of encoding information to prevent unauthorized access. The other options are unrelated concepts.
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Dog
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Cat
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Human
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Artificial Intelligence
C
Correct answer
Explanation
Human error is widely recognized as the leading cause of security failures, including those related to encryption implementation and key management. The other options are clearly incorrect distractors.
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Attack
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Maintaining access
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Gaining access
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Reconnaissance
D
Correct answer
Explanation
The standard ethical hacking methodology begins with reconnaissance (information gathering) to identify targets and vulnerabilities before proceeding to scanning and exploitation.
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Keyhijacking
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Keyjacking
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Keylogging
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Keyboard monitoring
C
Correct answer
Explanation
Keylogging is the act of recording the keys struck on a keyboard, typically in a covert manner. This allows the attacker to capture passwords and other sensitive data.
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data driven attacks
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fire attacks
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virus attacks
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unauthorised access
D
Correct answer
Explanation
A firewall acts as a barrier between a trusted internal network and untrusted external networks. Its primary purpose is to control traffic and prevent unauthorized access.