Computer Knowledge · 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

All of the following are examples of real security and privacy risks except

  1. hackers

  2. spam

  3. viruses

  4. identify theft

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hackers, viruses, and identity theft are direct security threats that compromise data integrity or confidentiality. Spam is primarily a nuisance or a marketing annoyance, rather than a direct security or privacy risk in the same technical sense.

Multiple choice

Verification of a login name and password is known as

  1. configuration

  2. accessibility

  3. authentication

  4. logging in

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Authentication is the process of verifying the identity of a user, device, or system, typically through credentials like a username and password. Configuration refers to settings, and accessibility relates to usability for people with disabilities.

Multiple choice

These days physical verification of address is a mandatory step for activation of a mobile phone connection. This process takes more than a week’s time and sometimes results in great amount of inconvenience too. Although telecom service providers have proposed instant activation that requires no verification, government seems reluctant to approve the same.

What if true would be the best reason for government not approving waiver of address verification?

  1. There have been instances of telephone subscribers vanishing into thin air without paying their bills.

  2. The mobile phones have occasionally been used to carry out immoral acts.

  3. Often it is necessary to establish the identity of the caller.

  4. The verification of address has come in handy to establish the identity of perpetrators of crime.

  5. The government proposes to defer the approval till a single national identity number system is introduced.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The government ought to have a strong reason to insist on verification despite the inconvenience. (4) should definitely be more valid and immediate concern of the government.

Multiple choice

Verification of a login name and password is known as

  1. configuration

  2. accessibility

  3. authentication

  4. logging in

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Authentication is the process of verifying the identity of a user, device, or system. Checking a login name and password is the most common form of user authentication.

Multiple choice

Cryptography is concerned with:

  1. Security networking in computers

  2. Study of astrology through crystals

  3. Cartooning

  4. Study of ciphers (secret writings)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cryptography is the practice and study of techniques for secure communication in the presence of third parties, primarily involving ciphers.

Multiple choice

Which of the following is not an essential element of security of e-commerce transactions?

  1. Authencity

  2. Integrity

  3. Non-repudiability of origin

  4. Regularity in dealings

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Regularity in dealings is not an essential element of security of e-commerce transactions. It is not essential that there must be dealings on a regular  or continous basis between buyer and seller for its security.  There may be only one transaction between buyer and seller and it may be secured if it is authentic, confidential ( privacy of transaction ), integrated. 

Multiple choice

Which of the following is generally used to safeguard against malware attacks?

  1. Trojan

  2. Firewall

  3. Spyware

  4. Ransomware

  5. Adware
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A firewall is a software or hardware-based network security system that controls the incoming and outgoing network traffic based on applied rule set. A firewall establishes a barrier between a trusted, secure internal network and another network (e.g., the Internet) that is not assumed to be secure and trusted.

Multiple choice

Which one of the following is not a data security measure?

  1. Using password to access

  2. Using retention periods for all files

  3. Allowing only EDP personnel to access any file

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The options A, B, and C are all standard data security practices. Since all listed options are valid security measures, 'None of these' is the correct choice as it implies none of the options are 'not' a security measure.

Multiple choice

Which of the following types of ciphers in cryptography are designed to take data blocks of a particular size to encrypt them with a key of particular size and yield a block of cipher text of a particular size?

  1. Stream ciphers

  2. Block ciphers

  3. Vernam ciphers

  4. Crypto algorithms

  5. Secret key algorithms
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This type of ciphers in cryptography are designed to take data blocks of a particular size, encrypt them with a key of particular size and yield a block of cipher text of a particular size.

Multiple choice

Which of the following ways of combining and feeding back the inputs and outputs of a cipher is the one in which it hides the pattern in the plain text by systematically combining each block with a ciphertext before actually encrypting it?

  1. Cipher block chaining

  2. Electronic code book mode

  3. Cipher feedback

  4. Output feedback

  5. Public key encryption
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the way of combining and feeding back the inputs and outputs of a cipher which hides the pattern in the plain text by systematically combining each block with a cipher text before actually encrypting it.