Suggested Answer:permission. Answer: B is incorrect. DAC is an access control model. In this model, the data owner has the right to decide who can access the data. Answer: A is🗳️
Mandatory Access Control (MAC) is a model that uses a predefined set of access privileges for an object of the system. Access to an object is restricted on the basis of the sensitivity of the object and granted through authorization. Sensitivity of an object is defined by the label assigned to it. For example, if a user receives a copy of an object that is marked as "secret", he cannot grant permission to other users to see this object unless they have the appropriate incorrect. Role-based access control (RBAC) is an access control model. In this model, a user can access resources according to his role in the organization. For example, a backup administrator is responsible for taking backups of important data. Therefore, he is only authorized to access this data for backing it up. incorrect. There is no such access control model as Policy Access Control.
The answer is D. Mandatory Access Control uses a predefined set of access privileges for an object of a system, based on the security clearance level and need-to-know principle.
The need-to-know principle is a security concept that states that a user should only have access to the information or resources they need to do their job, and not be given access to any additional resources or information beyond what is required for them to perform their duties. This helps limit the potential damage caused by unauthorized disclosure of sensitive information by controlling who has access to it. The principle applies in both physical and digital security contexts, and is often used in conjunction with other access control models such as mandatory or discretionary access control.
The term "need-to-know" has been used in various contexts and organizations over the years, but its origins can be traced back to military and intelligence agencies. In these settings, access to sensitive information is restricted based on a person's security clearance level (which relates to their level of authorization) as well as their demonstrated need-to-know that information for their job duties.
So the idea behind it comes from a historical context related to national security where only individuals with specialized knowledge, experience or authority were given access to certain types of classified information. The use of the term "need-to-know" likely arose naturally out of this principle-based practice -- a person should only have access when necessary in order for them carry out specific tasks successfully without endangering national interests. Today, the concept has become more widely applied in various industries beyond just government agencies and defense entities.
The terms "need to know" and the principle of the "least privilege" the are related and often discussed together in access control discussions, but they have distinct origins and applications.
The principle of least privilege involves granting a user or process only those permissions necessary to perform its intended function, while minimizing additional privileges or access beyond what is required. Conversely, the need-to-know principle refers to controlling who has access to confidential information based on their role and necessity for it in order to protect sensitive data from unauthorized disclosure.
Both principles aim at reducing risk exposure by limiting unnecessary permissions/accesses within a specific system (such as an operating system) or with respect to information between multiple parties respectively. While they share some similarities in practice, their application has developed independently over time indicating a clear distinction between them when discussing cybersecurity best practices and techniques aimed at enhancing confidentiality/privacy/security.
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