Which three factors should be considered when evaluating physical security systems? (Choose three.)
A. VESD protocols
B. User friendliness
C. Cost of equipment
D. Color of security hardware components
E. Likelihood of locking out legitimate users
What is the most likely cause of unreliability in biometric technology?
A. Spoofing by an imposter
B. Failure of the scanning device
C. Failure to recognize a legitimate user
D. Incorrect recognition (user recognized as the wrong person)
"The degree to which a system or component is operational and accessible when required for use" is the definition for which term?
A. Reliability
B. Availability
C. Serviceability
D. Maintainability
During a power outage, a semi-conductor manufacturing plant is likely to exhibit which cost of downtime profile?
A. Cost of downtime per hour remains the same.
B. Cost of downtime per hour increases with time.
C. Cost of downtime per hour decreases with time.
D. Cost of downtime per hour is exponential with time.
What is most critical for an aircraft that is in flight?
A. Reliability
B. Availability
C. Manageability
D. Maintainability
Which three situations can physical security systems help prevent? (Choose three.)
A. Network viruses
B. Accidental EPO activation
C. Theft of generator batteries
D. Power outages caused by the utility company
E. Circuit overloads due to unauthorized addition of servers
What is the definition of reliability?
A. The fraction of time a system is unable to perform its intended function.
B. The likelihood that a system failure will occur for a specified time range.
C. The ability of a system to perform its required functions for a specified period of time.
D. The degree to which a system is accessible when required for use at an instant in time.
MTBF is presented in which form?
A. Hours
B. Percent
C. Distance
D. Currency
MTTR is presented in which format?
A. Hours
B. Weight
C. Fraction
D. Distance
A data center manager wants to purchase a reliable UPS and specifies an MTBF of one million hours. What are two reasons this specification is flawed? (Choose two.)
A. Assumptions are not stated.
B. No definition of failure is provided.
C. Manufacturers do not provide MTBF.
D. MTBF is not a measure of reliability.
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