An accreditation is a formal declaration of approval

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See Chapter 12. An accreditation is a formal declaration of approval for a system to perform a particular function. 232 Dedicated, Compartmented, Controlled, and Multilevel mode are examples of A. Security labels B. Security levels C. Security modes D. Rings Answer: C See Chapter 12. These modes are all security modes, which are used to control how users can access materials depending on the materials’ classification. 233 The security mode in which all users have the required clearance to access information is known as A. Dedicated B. Compartmented C. Trusted D. Labeled Answer: B See Chapter 12. In a compartmented mode information system, all users have the clearance, but not necessarily the authorization, to access materials. 234 The security mode in which all users have the required clearance and authorization to access information is known as: A. Dedicated B. Compartmented C. Trusted D. Labeled Answer: A See Chapter 12. In a dedicated mode information system, all users have both the clearance and authorization to access information. 235 Fail closed is defined as
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A. The state entered by the takeover node in a fault- tolerant cluster B. The state entered by a failed node in a fault-tolerant cluster C. The failure of a component that results in information being available D. The failure of a component that results in information being unavailable Answer: D See Chapter 12. Fail closed is the property of a component that closes off all access when it fails. 236 Fail open is defined as A. The state entered by the takeover node in a fault- tolerant cluster B. The state entered by a failed node in a fault-tolerant cluster C. The failure of a component that results in information being available D. The failure of a component that results in information being unavailable Answer: C See Chapter 12. Fail open is the property of a component that permits all access when it fails. 237 An unintended and unauthorized communication path is known as a A. Covert channel B. Back door C. Front door D. Side door Answer: A See Chapter 12. A covert channel is an unintended and unauthorized communication path. 238 A component or feature of an information system that permits someone or something to bypass security controls is known as a A. Wormhole B. Back door C. Front door D. Side door Answer: B See Chapter 12. Back door is the term most often used to describe a feature that bypasses security.
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239 A system that consists of proprietary components is known as A. An open system B. A closed system C. A commercial system D. A for-profit system Answer: B See Chapter 12. A closed system is one that’s proprietary and for which few, if any, specifications are published. 240 The communications channel that connects the various components of a computer system is known as a A. Star B. Ring C. Bus D. Plane Answer: C See Chapter 12. Data that travels between the various components of a computer system take the bus. 241 Of what value is separation of authority in an organization?
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