You’ve pressed the power switch to a computer, but there are no sounds or lights coming from the system. You’ve checked the power outlet with a multimeter, and the outlet is properly powered. You’ve also checked the end of the power cord that inserts into the power supply, and the power cord is properly powered. What’s the next step to help troubleshoot the problem?
As part of a system upgrade, you’ve removed the SATA hard drive of a desktop computer and replaced it with a new SATA drive purchased from a local retailer. When you start the computer, you receive the message “Operating System Not Found.” What is the most likely problem?
You’ve upgraded the memory in a computer by adding an additional memory module to the motherboard. After powering the system up, the BIOS doesn’t show any errors but it also doesn’t show any additional memory in its memory counts. What is the best next step to troubleshoot the problem?
Why can’t my computer recognize a new RAM module? Read More »
What kind of CPU packaging is designed to fit into a ZIF socket?
Which of these components would normally NOT connect directly to a southbridge?
A CompTIA A+ certified professional’s toolbag most likely includes a set of loopback plugs. What is a loopback plug?
Wireless technology is used everywhere, and there are many different standards associated with the 802.11 standards. In this video, you’ll learn about the differences between the a,b,g, and n standards, and you’ll also learn how wireless networks authenticate users and encrypt network traffic.
CompTIA Network+ N10-004: 1.7 – Wireless Communication Standards Read More »
IP addressing is much more than subnet masks and binary math. In this video, you’ll learn about supernetting, public vs. private IP addressing, network address translation, and automatic IP addressing technologies.
CompTIA Network+ N10-004: 1.4 – Addressing Technologies Read More »
Properly architecting an entire network usually involves a great deal of planning and IP subnetting calculations. In this video, you’ll learn how to use subnet masks to divide a network into smaller IP subnets.
CompTIA Network+ N10-004: 1.4 – Subnet Masks – Part 2 Read More »
You’d like to secure a desktop computer by disabling the floppy drive to anyone but the IT staff. What’s the best way to accomplish this?
