(Top 2024/2025 EXAM REVIEW DOC )WGU C393 CompTIA A+ Core 1 Exam 220-1001. Exam Review 100% Accurate, VERIFIED.

WGU C393 CompTIA A+ Core 1 Exam 220-1001. Exam Review 100% Accurate, VERIFIED. CompTIA Troubleshooting Method - -1. Identify the problem 2. Establish a theory of probable cause 3. Test the theory to determine actual cause 4. Establish a plan of action and implement the solution 5. Verify full system functionality and implement preventable measures 6. Document findings, actions taken, and the outcome Monitor Troubleshooting: Overheat shutdown (video cards get hot and shut down) - -Bad fans on video card or not getting enough ventilation Monitor Troubleshooting: Dead pixels - -Happen often on LCD monitors. No fix. Those towards the center of the screen, black or bright white, you can send it back to the manufacturer for a new one. Monitor Troubleshooting: Artifacts (pieces of stuff show up on the screen that were there a second ago but shouldn't be there anymore) - -Bad video RAM? Test or replace with an extra video card. Monitor Troubleshooting: Incorrect color patterns - -Check the cable, especially an old VGA cable. Bad video RAM? Monitor Troubleshooting: DIM image (not making enough light) - -Problem on older LCD panels. Usually these CCFLs are replaceable. Try turning brightness up. Monitor Troubleshooting: Flickering image - -Check the cable, like HDMI tables that are notorious for flickering image. Monitor Troubleshooting: Distorted image - -Make sure you're running at the native resolution of the monitor. If it's a projector, adjust the geometry. Monitor Troubleshooting: Burn in - -On old plasma monitors, a fixed image left on the screen would get burned in. With LCD monitors, it's possible but its called persistence and all you need to do is change the image on the screen and it will go away. Monitor Troubleshooting: Oversized images & icons - -Usually on Windows machines. Windows has a tool you can use to adjust the text and image size. Wireless Troubleshooting: No connectivity - -Does the SSID exist? Has the SSID changed? Has the password changed for the SSID? Low RF signal can also prevent connection, you don't have enough signal. If that's the case, get closer to the SSID, look at your antennaes.. Perhaps the dipoles aren't pointing straight up and need to be straightened. Perhaps SSID broadcasting has been turned off, so you'd need to manually configure a profile for it. Wireless Troubleshooting: Slow transfer speeds - -Interference. Use an analyzer to locate issues with ISM. Baby monitors and microwaves can cause interference that result in slow transfer speeds. Wireless Troubleshooting: Low RF signal - -Get closer to SSID, no walls in between, etc. Wireless Troubleshooting: Intermittent Connectivity - -Low RF signals. 802.11ac is great about getting around these issues, but maybe you just have too many people on your wireless network (such as wifi in a stadium). You may just need more WAPs. You can also set up QoS so computers get good bandwidth, or setting up particular ports for applications to get as much bandwidth as possible. Mobile Troubleshooting: Inaccurate/non-responsive touchscreen - -If the system is heavily overloaded, it can cause a messed up touch screen. Restart the system. You probably installed too many apps, try removing apps. You can also try recalibration. Mobile Troubleshooting: Dim display - -Turn up the brightness. There is usually a manual slider for brightness, make sure its turned up all the way. If auto-brightness is a feature, make sure its turned on. You can also repair dim displays by repairing backlights