Which of the following malware types would MOST likely require reimaging?

A technician responds to a report that a user's desktop is operating much slower after upgrading the Windows OS to the latest version. The technician notices responsiveness is erratic, and the symptoms are similar to a failing hard drive. The technician runs a full hardware diagnostic, and all systems pass. The technician checks the properties for each device in Device Manager, and the hard disk and the standard AHC11.0 serial ATA controller both indicate the following message: This device is working properly. Which of the following should the technician attempt that will MOST likely resolve the performance issue?

A user contacts a technician to troubleshoot server errors. The user explains that some files will not open on the server, the data backups are operational, and the weather has been bad. The technician notices missing time slots in the event log.
Which of the following should the technician replace to prevent these issues in the future?

A technician has been asked to review the configuration of an executive's SOHO network following a recent news report regarding home Internet routers that are being added to botnets for malicious purposes. Which of the following would be BEST to prevent the router from being added to a botnet? (Choose two.)

A technician is installing Windows 7 64-bit OS on a VM but keeps getting errors. The specifications for the machine are:
* Two 1GHz CPUs
* 2GB of memory
* 15GB hard drive
* 800 × 600 screen resolution
Which of the following should the technician do to resolve the problem?