Computer Science - IT MCQs
Topic Notes: Computer Science - IT
<p>MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.</p>
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
31
Which security objective is supported by practices such as secure waste disposal, auditing, and applicant screening?
Answer:
data security
These administrative and operational controls are essential components of a robust data security strategy. By managing physical waste, monitoring system access through audits, and vetting personnel, organizations reduce the risk of data breaches and unauthorized information disclosure.
32
Which security process involves transforming data into an unreadable format using passwords or keys to prevent unauthorized access?
Answer:
Encryption
Encryption is the cryptographic process of encoding information so that only authorized parties can access it. While passwords are used to manage access, the actual protection of the data content itself is achieved through encryption algorithms.
33
What is the term for security technologies that utilize unique physical characteristics, such as fingerprints or retinal patterns, for identity verification?
Answer:
Biometrics
Biometrics refers to the identification of humans by their characteristics or traits. Fingerprint scanners, facial recognition, and retinal scans are common examples of biometric authentication methods used to ensure secure access to sensitive systems.
34
What is the term for a secret string of characters or numbers used to restrict access to a system or account?
Answer:
Password
A password is a secret sequence of characters, numbers, or symbols that a user provides to prove their identity and gain access to a computer system, application, or service. It serves as a primary form of knowledge-based authentication used to protect sensitive information from unauthorized access.
35
Which category of network issues is most directly associated with unauthorized access?
Answer:
Security
Unauthorized access refers to an individual or system gaining entry to a network or data without permission. This is fundamentally a security issue, as it compromises the confidentiality, integrity, and availability of the network resources and sensitive information stored within the system.
36
Which of the following activities is considered the most prevalent form of computer-related crime?
Answer:
Software piracy
Software piracy, which involves the unauthorized copying, distribution, or use of software, remains one of the most widespread and frequently occurring computer crimes globally due to the ease of digital duplication.
37
What is the standard term for the coded entries used to authenticate and gain access to a computer system?
Answer:
Passwords
A password is a secret string of characters used for user authentication to prove identity and gain access to a computer system or protected data. It serves as a primary security measure to prevent unauthorized access to sensitive information.
38
Which of the following methods is NOT classified as a biometric technique for identification?
Answer:
Badge
Biometrics involve measuring unique physical or behavioral traits. A badge is a physical object used for identification, which falls under 'something you have' (possession-based authentication), whereas retina scans, palm prints, and facial recognition are all based on unique biological markers inherent to the human body.
39
What is the term for a private string of characters used by a user to authenticate their identity to a computer system?
Answer:
password
A password is a secret sequence of characters used for authentication to prove identity or gain access to a computer system or service. It is a fundamental security mechanism that, when combined with a username, ensures that only authorized users can access specific data or system resources, protecting against unauthorized entry.
40
What is considered the most critical impact when a computer installation experiences a major disaster?
Answer:
Loss of data
While hardware and power can be replaced, the loss of data is often irreparable and catastrophic for an organization. Data represents the intellectual capital and operational history of a business, making its protection the primary focus of any disaster recovery strategy.