A technician is installing a new printer. After registering the printer, the technician receives an email from the manufacturer stating there is a security vulnerability that can be remediated. Which of the following steps should the technician take next?
Answer(s): C
Firmware updates from the manufacturer often include security patches that remediate known vulnerabilities.Applying the update ensures the printer's software is hardened against the issue before it can be exploited.
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 POST followed 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?
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.
A user prints a job from a laser printer. The user wipes the page, and the words and images come off of it. The technician replaces the toner cartridge, but the issue persists. Which of the following components should the technician replace next?
If toner wipes off the page, it's not being properly heat-and-pressure fused to the paper. The fuser assembly is responsible for melting and bonding the toner; a failing fuser will let prints smear or wipe away even with new toner.
Which of the following has the best penetration through physical objects, such as walls?
Lower-frequency signals (longer wavelengths) like 2.4 GHz experience less attenuation when passing through walls and other obstacles compared to higher-frequency bands such as 5 GHz or 6 GHz. NFC operates at very high frequencies over extremely short distances and isn't intended for penetrating walls.
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