A technician has built a new computer. On the initial startup, the computer passes POST but will not turn on the operating system. Which of the following components has failed?
Answer(s): D
Since POST verifies that critical hardware (CPU, memory, motherboard, etc.) is functioning, a successful POSTfollowed by failure to load the operating system points to the storage device - i.e., the hard drive - not providing a boot volume.
A user reports slow internet browsing. The technician finds high CPU and memory usage, and pop-ups occur every minute. Which of the following should the technician do next?
Answer(s): C
High resource usage combined with frequent pop-ups strongly indicates malware or adware infection. Updating your anti-malware definitions and performing a full system scan is the most effective next step to identify and remove malicious software.
Which of the following is the best to use when testing a file for potential malware?
A sandbox provides an isolated environment where you can safely execute and observe a suspicious file’s behavior without risking your primary system.
Which of the following resolutions is commonly known as Ultra HD?
Ultra HD (commonly called 4K UHD) refers to a display resolution of 3840×2160 pixels, which is four times the pixel count of Full HD (1920×1080).
A technician is troubleshooting stylus issues on identical company-provided tablets. Users can purchase their own accessories. Some users have no issues, but others report that their styluses charge intermittently and die frequently. Which of the following is the most likely cause of this issue?
Answer(s): A
Because the tablets and styluses are otherwise identical, intermittent charging and rapid battery drain usually point to a physical obstruction - namely, some third-party or thick cases blocking the inductive charging contacts between the tablet and stylus. Removing or replacing the case restores proper charging alignment so the stylus holds a full charge.
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