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Figure 1239
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Character Map
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Fragmentation
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You learned about Disk Defragmenter and the problem of file fragmentation back in 9, Implementing Hard Drives, so turn there now and see if you can answer these questions What causes file to become fragmented How does file fragmentation affect your computer How often should you defragment your hard drives
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Figure 1240
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the command line, with all the proper switches Figure 1241 shows the configuration line for running the Disk Defragmenter program Don t know anything about the command line or switches Don t worry, my book for the 602 course has an entire chapter on the command line Security Center (XP Only) The Security Center is a one-stop location for configuring many security features on your computer All of these security features, and many more, are discussed in detail in their related chapters System Information System Information is one of those tools that everyone (including the CompTIA A+ exams) likes to talk about, but it s uncommon to meet techs who say they actually use this tool System Information shows tons of information about the hardware and software on your PC (Figure 1242) You can also use it as a launch point for a number of programs by clicking on the Tools menu
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Figure 1241
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Task Scheduler
System Restore (XP Only) System Restore is not only handy, it s also arguably the most important single utility you ll ever use in Windows when it comes to fixing a broken system System Restore enables you to take a snapshot a copy of a number of critical files and settings and return to that state later (Figure 1243) System Restore holds multiple snapshots, any of which you may restore to in the future Imagine you re installing some new device in your PC, or maybe a piece of software Before you actually install, you take a snapshot and call it Before Install You install the device, and now something starts acting weird You go back into System Restore and reload the previous snapshot, and the problem goes away
12: Understanding Windows
Tech Tip
Command Line
The command line goes back to the early days of computing, but it continues to be an essential tool in all modern operating systems, including Linux, Mac OS X, and all versions of Windows My book for the 602 course goes into the command line in detail
Figure 1242
System Information
System Restore isn t perfect It only backs up a few critical items, and it s useless if the computer won t boot, but it s usually the first thing to try when something goes wrong assuming, of course, you made a snapshot!
Command Line
The Windows command line is a throwback to how Microsoft operating systems worked a long, long time ago, when text commands were entered at
Figure 1243
System Restore
Mike Meyers CompTIA A+ Guide: Essentials (Exam 220-601)
Figure 1244
DOS command prompt
a command prompt Figure 1244 shows the command prompt from DOS, the first operating system commonly used in PCs DOS is dead, but the command prompt is alive and well in Windows including Vista Every good tech knows how to access and use the command prompt It is a lifesaver when the GUI part of Windows doesn t work, and it is often faster than using a mouse, if you re skilled at using it To access a command prompt from within Windows Select Start | Run, and type cmd in the dialog box Click OK and you ll get to a command prompt (Figure 1245)
Figure 1245
Command prompt in Windows XP
Microsoft Management Console
One of the biggest complaints about earlier versions of Windows was the wide dispersal of the many utilities needed for administration and troubleshooting Despite years of research, Microsoft could never find a place for all the utilities that would please even a small minority of support people In a moment of sheer genius, Microsoft determined that the ultimate utility was one that the support person made for herself! This brought on the creation of the amazing Microsoft Management Console The Microsoft Management Console (MMC) is simply a shell program in Windows 2000 and XP that holds individual utilities called snap-ins You can start the MMC by selecting Start | Run and typing in MMC to get a blank MMC Blank MMCs aren t much to look at (Figure 1246)
The CompTIA A+ Essentials exam expects you to know about the MMC and other tools discussed in the rest of this chapter, so don t skip it!
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