Computer Security - Protection In General Purpose Operating System

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| By M.Priyavani
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M.Priyavani
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Quizzes Created: 1 | Total Attempts: 186
| Attempts: 186
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  • 1/10 Questions

    As the operating system becomes more complex, the security considerations increases.

    • True
    • False
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About This Quiz

This quiz on 'Computer Security - Protection in General Purpose Operating Systems' assesses knowledge in access control, security complexities, temporal separation, memory confinement, and segmented memory management. It is designed for learners to understand essential security mechanisms within operating systems.

Computer Security - Protection In General Purpose Operating System - Quiz

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  • 2. 

    ACL stands for

    • Access Class Loader

    • Acquired Control Loader

    • Access Control List

    • Access Control Loader

    Correct Answer
    A. Access Control List
    Explanation
    ACL stands for Access Control List. An Access Control List is a set of permissions that determines what actions a user or group can perform on a resource. It is used to control access to files, folders, networks, or other system resources. By defining specific rules and restrictions, ACL helps in enforcing security policies and ensuring that only authorized users can access certain resources.

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  • 3. 

    In _________ memory management, a program is divided into separate pieces where each piece has a logical unity exhibiting a relation among all of its codes or data values.

    • Paging

    • Tagged

    • Relocated

    • Segmented

    Correct Answer
    A. Segmented
    Explanation
    Segmented memory management is a technique where a program is divided into separate pieces called segments. Each segment represents a logical unit that contains related codes or data values. This division allows for efficient memory allocation and management, as each segment can be independently loaded into memory and accessed. The use of segmented memory management helps to organize and optimize the memory usage in a program, improving overall performance and flexibility.

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  • 4. 

    _______ is an unforgeable token  that gives the possessor certain right to an object.

    • Access control list

    • Access control matrix

    • Capability

    • Domain

    Correct Answer
    A. Capability
    Explanation
    A capability is an unforgeable token that gives the possessor certain rights to an object. It is a security mechanism used in access control systems to ensure that only authorized entities can access and manipulate objects. Capabilities are typically associated with specific permissions or privileges, allowing the possessor to perform certain actions on the object. Unlike access control lists or matrices, which rely on predefined rules and permissions, capabilities provide a more flexible and dynamic approach to access control by granting specific rights to individual entities.

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  • 5. 

    In ____________ separation, the processes having different security requirements are executed at different times.

    • Physical

    • Temporal

    • Logical

    • Cryptographic

    Correct Answer
    A. Temporal
    Explanation
    Temporal separation refers to the practice of executing processes with different security requirements at different times. This ensures that processes with higher security requirements are executed separately from processes with lower security requirements, reducing the risk of unauthorized access or compromise. By scheduling these processes at different times, the potential for security breaches or conflicts is minimized, enhancing overall system security.

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  • 6. 

    Operating system functions can be categorized as :

    • Access control

    • Identity & credential management

    • Information flow

    • Audit & integrity protection

    Correct Answer(s)
    A. Access control
    A. Identity & credential management
    A. Information flow
    A. Audit & integrity protection
    Explanation
    The operating system functions can be categorized into four main categories: access control, identity and credential management, information flow, and audit and integrity protection. Access control refers to the mechanisms that determine what resources a user or process can access. Identity and credential management involves managing user identities and their associated credentials, such as passwords or digital certificates. Information flow ensures that data is properly transmitted and protected within the system. Audit and integrity protection involve monitoring and recording system activities to detect and prevent unauthorized changes or breaches.

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  • 7. 

    Exhaustive attack on passwords is also called as ____________

    Correct Answer(s)
    brute force attack
    Explanation
    An exhaustive attack on passwords, also known as a brute force attack, is a method where an attacker systematically tries all possible combinations of characters until the correct password is found. This approach is time-consuming and requires significant computational power, but it can be effective in cracking passwords that are weak or easily guessable.

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  • 8. 

    ________ is a method to confine users to one side of a boundary of memory.

    • Fence

    • Relocation

    • Base-Bound registers

    • Tagging

    Correct Answer
    A. Fence
    Explanation
    A fence is a method used to confine users to one side of a boundary of memory. It acts as a barrier or boundary that prevents users from accessing memory outside of a specific range. This can be useful in ensuring the security and integrity of memory by preventing unauthorized access or modification. By implementing a fence, the system can control and restrict user access to specific memory regions, improving overall system stability and security.

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  • 9. 

    The quality to confirm a user identity using something the user is called as __________

    Correct Answer
    biometrics
    Explanation
    Biometrics refers to the quality or method of confirming a user's identity by using something that is unique to them, such as their fingerprints, facial features, or iris patterns. This technology relies on the fact that these biological characteristics are difficult to replicate, making it a reliable and secure way to authenticate a user's identity.

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  • 10. 

    The system that provides an argument to the function and the user computes and returns the function values are called as ____________

    Correct Answer
    challenge response systems
    Explanation
    The term "challenge response systems" refers to a system where an argument is provided to a function and the user computes and returns the function values. This type of system involves a challenge or request for information, and the user responds with the appropriate response or computation. It is a method commonly used in authentication or verification processes, where the user must provide a correct response to a challenge in order to gain access or prove their identity.

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  • Current Version
  • Apr 06, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 23, 2020
    Quiz Created by
    M.Priyavani
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