I am preparing for CompTIA A+ 1001 & 1002 exam, and I have a lot of questions, as the answers from kaplanlearn platform that ITProTV recommends aren't entirely clear to me.
Could someone from ITProTV answer those questions for me comprehensively, please? I think these answers will help many students, not just me.
Q: Which two wires form an AT power supply should be adjacent to each other on a motherboard, A: black wires
Why two black wires should be adjacent?
Which feature optimizes network traffic on the network connection page? A: QoS Packet Scheduler
Why on the network connection page and how QoS Packet Scheduler works?
Q: How does a lower clock speed on a portable computer, as compared to a desktop, affect the front-side bus? A: The lower clock speeds in a portable computer mean that there is a lower multiplier. This enables the front-side bus to be increased to a higher level before the overclocker runs into a clock-speed barrier
Why would you apply a lower clock speed on a portable computer? Is overclocking popular in portable computers? I think this should question should refer to a PC.
What is the transmission distance supported by multi-mode fibre optic cable, A: 3000 feet (914 m)
Well, it really depends on what gbit/s we want to achieve. If we want to transfer at 10 Gbit/s, then the distance is 550m. The distance decreases the overall speed of MMF, but it isn’t limited to 3000 feet. Why the answer is 3000 feet? It is probably for 1 Gbits/s, but it isn’t stated in the question.
Q: What should you do FIRST when upgrading a motherboard of a computer? A: Confirm the CMOS settings
This one is quite confusing. I googled upgrading a motherboard and each website refers to changing the motherboard to a better one. Does this question mean upgrading the BIOS of the motherboard? If so, the FIRST step should be PERFORM BACKUP. Why confirm the CMOS settings?
Q: What are the three basic requirements to use a USB keyboard with a computer? A: The USB port, USB keyboard driver and BIOS should also feature USB legacy support.
Why BIOS should also feature USB legacy support? As I am aware, USB is a standard and all keyboards are connected via USB nowadays. Why would you need USB legacy support?
In iPhones, from which sources do the GPS obtains its information? A: Satellites, cell towers and WiFi
I had very similar. It asked about “mobile devices” and the answer was satellites, excluding cell towers and WiFi. Are cell towers and WiFi sources utilised by iPhone GPS only?