A Home User Reports Slow Computer Performance and Application Crashes

question 261

Multiple Choice

A home user reports slow computer performance and application crashes after clicking a "repair" button on a pop-up warning while browsing the Internet. Which of the following are the FIRST steps a technician should take to identify and resolve the issue? (Choose two.)

• A) Perform a system file check and replace any changed files with their original versions
• B) Enable the pop-up blocker on the Internet browser
• C) Uninstall any recently installed unknown programs and browser extensions
• D) Perform a hard shutdown and cold boot the computer
• E) Scan the RAM and hard drive using an up-to-date antivirus program

---

Definitions:

Z

In statistics, typically refers to a standard score indicating how many standard deviations an element is from the mean.

Null Hypothesis

A hypothesis in statistical analysis that assumes no significant difference or effect exists between certain characteristics, conditions, or variables.

Significance Level

The significance level, also known as alpha, is a pre-determined threshold for statistical significance, used to decide whether an observed effect is not due to chance.

P-values

A numerical measure that helps in determining the significance of results obtained in statistical hypothesis testing, indicating the probability of obtaining test results at least as extreme as the ones observed during the test, assuming that the null hypothesis is true.