131. You suspect a virus has entered your computer. What will not be affected by the virus?
132. What is a TSR?
133. What does MSCDEX.EXE do?
134. Upper Memory blocks are located where?
135. Batch files contain a group of MS-DOS commands that are run in successive order. What filename extension identifies batch files?
136. After upgrading your computer to a new DOS version, an older application displays the error message "Incorrect DOS version". What should you do to run this application?
137. When executed from a bootable hard drive, which command will make a formatted floppy disk bootable?
138. Which of the following commands allows you to make a directory?
139. While working with MS-DOS, which command is used to specify the colour display, 40 columns and color?
140. Which DOS command allows you to compress existing disks and to create new compressed volumes?
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