please help me to answer these question. just need a short answer and explaination why.
dipital DIMM (dual inline memory module) DisplayPort heat sink internal components keyboard backlight laptop loopback plug RAM (random access memory) RJ-11 port RJ-45 port SATA power connector Array) port video memory Wi-Fi Wireless Fidelity) ZIF connectors >> THINKING CRITICALLY These questions are designed to prepare you for the critical thinking required for the A+ exams and may use content from other chapters and the web. 1. You purchase a new desktop computer that does not have wireless capability, and then you decide that you want to use a wireless connection to the Internet. What are the two least expensive ways (choose two) to upgrade your system to wireless? a. Trade in the computer for another computer that has wireless installed. b. Purchase a second computer that has wireless capability, c. Purchase a wireless expansion card and install it in your system. d. Purchase a USB wireless adapter and connect it to the computer by way of a USB port. 2. What type of computer is likely to use SO-DIMMs, have an internal power supply, and use a desktop processor socket 61 of 1210 ENE 62 CHAPTER 1 Taking a computer Apart and Putting It Back Together 3. When troubleshooting a computer hardware problem, which tool might help with each of the following problems? a. You suspect the network port on a computer is not functioning. b. The system fails at the beginning of the boot and nothing appears on the screen. c. A hard drive is not working and you suspect the Molex power connector from the power supply might be the source of the problem. 4. You disassemble and reassemble a desktop computer. When you first turn it on, you see no lights and hear no sounds. Nothing appears on the monitor screen. What is the most likely cause of the problem? Explain your answer. a. A memory module is not seated properly in a memory slot. b. You forgot to plug in the monitor's external power cord. c. A wire in the case is obstructing a fan. d. Power cords to the motherboard are not connected. 5. You are looking to buy a laptop on a budget that requires you to service and repair the laptop yourself, and you want to save money by not purchasing an extended service agreement beyond the first year. To limit your search, what should you consider when choosing manufacturers? Which manufacturers would you choose and why? 6. A four-year-old laptop will not boot and presents error messages on screen. You have verified with the laptop technical support that these error messages indicate the motherboard has failed and needs replacing. What is the order of steps you should take to prepare for the repair? a. Ask yourself of replacing the motherboard will cost more than purchasing a new laptop. b. Find a replacement motherboard. c. Find the service manual to show you how to replace the motherboard. d. Ask yourself if the laptop is still under warranty. 7. Why are laptops usually more expensive than desktop computers with comparable power and features? 62 OL
