Joe, a customer, has informed a Tier 2 help desk technician that a computer will not boot up. After about ten minutes of troubleshooting, Joe is increasingly concerned and claims that the technician is wasting his time because he has already tried everything that has been suggested.
Which of the following should the technician do?

Many of the files in a user's network folder have a new file extension and are inaccessible. After some troubleshooting, a technician discovers a text document that states the files were intentionally encrypted, and a large sum of money is required to decrypt them.
Which of the following should the technician do to recover the files?

次の基準のうち、クレジットカードの処理を管理しているのはどれですか？

A customer calls the help desk to report an intermittent dim display on a recently purchased laptop that is used while traveling. The display appears to function properly white the customer is at home, but the display appears dim while traveling. Which of the following is the MOST likely cause of the dim display'?

技術者がWindowsワークステーション上のマルウェアを駆除しています。次のうち、同じマルウェアの再発を防ぐ可能性が最も高いのはどれですか？