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What is the very first step that should be taken when performing work with a computer? 

Which of the following represents a method for accessing the BIOS/UEFI setup program?

You are troubleshooting a computer that your client said turns off during normal operation. While you are trying to identify the problem, the client also informs you that if he waits a while, the computer will turn back on and run normally for a bit. You open the system and immediately notice a large dust buildup around the processor fan and heat sink. What problem can you detect on the computer and confidently report to your client?

Jose calls you at the help desk because he is having a problem logging on to his laptop computer. After several unsuccessful attempts to enter his password, he asks you to reset the password because he must have forgotten it. You reset his password, and he types it, but again the computer rejects it. Jose assures you that he typed the correct user name and password. You ask him what type of computer he is using, and he tells you a laptop.  What might be the problem with Jose’s computer?

A corporate user is attempting to connect to the company’s Windows domain server on the local network with her new laptop through a wired connection.​Which of the following is required for the user to successfully sign in to the Windows domain?

Do you need to have a personal Facebook account to have a Facebook business page? Are the two connected?

Heather is troubleshooting a computer at her worksite. She has interviewed the computer’s user and is currently trying to reproduce the problem the user described. Heather is in which step of the troubleshooting process? 

You have been asked to assist a retail company. It sells clothing and would like to have a Point of Sale computer installed to help with inventory control and to allow customers to check out faster.​What peripheral will you recommend to them to help them keep track of inventory and check customers out faster?

Phosphatidylserine is moved from the outer to the cytosolic leaflet by a:

Which vitamin(s) is/are involved in energy production (glycolysis, the Krebs cycle, and the electron transport chain)? Choose one answer.