CMSC 133 - UNIT 3

What is a sign of high CPU usage when the computer is idle?

• CPU usage below 10%

• CPU usage above 20%

• CPU usage above 80% only during heavy tasks

• CPU usage fluctuates between 5% and 10%

What hazard occurs when two instructions compete for the same resource simultaneously?

• Data Hazard

• Structural Hazard

• Control Hazard

• Name Dependency

Which of the following is an example of a control hazard solution?

• Register renaming

• Delayed branching

• Pipeline forwarding

• Output dependency

What is a common cause of overheating in a computer?

• Outdated software

• High CPU usage

• Blocked air vents

• All of the above

What is a mitigation strategy for input overvoltage?

• Use external filtering circuits

• Employ Undervoltage protection (UVP)

• Install surge suppressors

• Both b and c

What is a potential sign of high CPU usage when performing tasks that are not resource-heavy?

• CPU operates silently

• CPU usage drops below 10%

• Sluggish computer performance

• Mouse responsiveness improves

What type of pipelining hazard occurs when one instruction depends on the result of a previous instruction still in the pipeline?

• Structural Hazard

• Data Hazard

• Control Hazard

• Branch Prediction

What is a key risk associated with overclocking a CPU?

• Improved system cooling

• Increased CPU lifespan

• Reduced CPU lifespan

• More efficient multitasking

Which of the following symptoms might indicate a failing CPU?

• A blue screen with an error code

• Increased storage capacity

• Improved battery performance

• Faster startup times

What is a mitigation strategy for preventing reversed polarity issues in a power supply unit (PSU)?

• Utilize Undervoltage protection (UVP)

• Use diodes to block reverse currents

• Ensure external components are missing

• Increase heat generation