Computer Basics 面试题与答案
问题 56. What is File?
A file is a long sequence of bytes which represent data. Each file has a name and an extension which are separated by a dot (a period). The name, of course, identifies the file. The extension tells the computer what type of data is contained within the file. For example, a file called "Letter to George.DOC" is a Microsoft Word DOCUMENT. The file you are reading now is called "glossary.html". HTML stands for HyperText Markup Language, and it is the file type for web pages.
问题 57. What is Floppy Disk?
A round, flexible piece of magnetic media stored within a 3.5 inch square protective plastic case. One floppy disk can store 1.44 megabytes of data. Because floppy disks use magnetic media, they must be kept away from magnets, or the data on them could be erased! Computer speakers are magnetically shielded to prevent erasure of floppy disks, but standard speakers are not!
问题 58. What is Focus?
When you use a dialog box with many items to fill out, only one of the items can be accepting input from the keyboard at a time. The active item is said to be the item with the focus. You can press the TAB key to move the focus to the next item; press SHIFT+TAB to move the focus to the previous item. The item with the focus will usually have a dashed border around it, or it will have a blinking text cursor in it.
问题 59. What is Folder?
A folder can be thought of as a location on your hard disk or floppy disk. Folders used to be called directories/subdirectories. A folder contains files and can contain nested folders (subfolders). Folders and subfolders are used to organize your hard disk. For example, you probably already have a folder named "My Documents" on your hard disk; you could place a subfolder named "Work" under "My Documents", and place all your work documents within this subfolder. This way, you can keep your work documents separate from your personal documents.
问题 60. What is Open?
You must open a file to view or edit it. When you open a file, it is copied from the hard disk into the computer's high-speed memory. Memory is temporary workspace only. If you change the file, you must save it (which copies the file back to the permanent hard disk).
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