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單項選擇題

A user states that whenever they try to launch a certain installed application, they hear unusual whirring/clicking sounds from their machine and the application never loads. Which of the following components would a technician MOST likely need to replace?（）

A. Hard Disk Drive
B. Optical Drive
C. Power Supply Unit
D. Case Fan

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Which of the following security threats are MOST likely prevented through user training?（）

A. Network Intrusion
B. Adware Popups
C. Social Engineering
D. Spam Messages

單項選擇題

Traffic coming across port 443 is for which of the following protocols?（）

A.SFTP
B.FTP
C.HTTP
D.HTTPS

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