You have recently upgraded the CPU in one of your servers, including a heat sink and a CPU fan. Unfortunately, the temperature of the CPU is getting very hot during normal operation. Which of these is most likely the cause of this overheating?
Crosstalk is an important measurement to consider when building out your cable infrastructure. In this video, you’ll learn about the fundamentals of crosstalk and how to minimize the amount of crosstalk in your copper cables.
CompTIA Network+ N10-005: 3.6 – Troubleshooting Crosstalk Read More »
The placement of your cable is almost as important as the type of cable that you use. In this video, you’ll learn some best practices for cable placement, and how the right cable placement can minimize EMI and other interference.
CompTIA Network+ N10-005: 3.6 – Troubleshooting Cable Placement, EMI, and Interference Read More »
A simple mistake in wiring can create cabling issues and disconnections for your network devices. In this video, you’ll learn about the results of reversing the transmit and receive pairs and how you can best troubleshoot this issue.
CompTIA Network+ N10-005: 3.6 – Troubleshooting Transmit-Receive Reversal Read More »
Signal loss on your network connections can be frustrating to troubleshoot. In this video, you’ll learn the fundamentals of signal loss, how to calculate dB loss, and some strategies for troubleshooting this common issue.
CompTIA Network+ N10-005: 3.6 – Troubleshooting dB Loss Read More »
What type of network device makes forwarding decisions based on an OSI Layer 3 address?
You’ve recently installed a new power supply, and the computer appears to start properly and you are able to login to the operating system. Unfortunately, your DVD-ROM drive is completely unresponsive, and no lights or sounds are coming from the drive. Which of these would be the most likely issue?
You have just installed a new motherboard, plugged in all of the cables, and connected the power. However, when you start the computer you hear a series of beeps and the screen remains blank. Which of these would be the most likely cause of this issue?
This month: Understanding VLANs, command line troubleshooting, subnetting, and understanding the differences between unicast, broadcast, and multicast. Also, some tips for using your existing Internet router to help with your studies and some last-minute study tips.
Professor Messer’s CompTIA Network+ Study Group – April 2012 Read More »
