Computer Security - Protection In General Purpose Operating System

2.

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

True
False

Correct Answer

A. True

Explanation

As the operating system becomes more complex, it requires more features and functionalities to support various applications and hardware. This complexity also introduces more potential vulnerabilities and attack vectors, increasing the security considerations. With more complex code, there is a higher likelihood of bugs, loopholes, and weaknesses that can be exploited by attackers. Therefore, it is true that the security considerations increase as the operating system becomes more complex.

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3.

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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1

4.

________ 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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5.

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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6.

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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7.

_______ 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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8.

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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9.

Exhaustive attack on passwords is also called as ____________

Correct Answer
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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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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Computer Security - Protection In General Purpose Operating System

Operating system functions can be categorized as :

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

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

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

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.

ACL stands for

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

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

Exhaustive attack on passwords is also called as ____________

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