1. Start your lab workstation in MS-DOS mode.
2. At the command prompt in the root directory, type EDIT CONFIG.SYS and press Enter. Your lab workstation should respond by launching the EDIT program and opening the CONFIG.SYS file.
3. On the following lines copy the contents of your CONFIG.SYS; then next to each command, write how your lab workstation should respond. Every CONFIG.SYS can be different; the purpose of this exercise is to teach you how to interpret the commands that you find in the CONFIG.SYS file on your workstation. You will find the command definitions online at http://support.microsoft.com/?kbid=232557
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Command |
Syntax |
Description |
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BUFFERS |
BUFFERS=40 |
This
command tells DOS how many buffers to maintain when transferring data to and
from secondary storage. |
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Circle True or False.
1. When you install memory into a Pentium-class system board that uses 72-pin SIMMs, the memory must always be installed in pairs. True / False
2. Conventional memory includes the first 128K of RAM. True / False
3.
4. EDO RAM is faster than FPM RAM. True / False
5. Flash memory is commonly used as a cache for desktop PCs. True / False
6. If
the following line were added to your CONFIG.SYS file, what would it tell your
computer to do? DEVICE=C:\DOS\HIMEM.SYS
7. What
would the following command tell your PC to do? EDIT AUTOEXEC.BAT
8. If
the following line were added to your CONFIG.SYS file, what would it tell your
computer to do? Dos=high,umb
What is conventional memory?—Conventional memory, or base memory, is the first 640K of RAM.
What is upper memory?—Upper memory includes memory addresses starting at 641K and going up to 1024K.
What is extended memory?—Memory addresses above 1024K are referred to as residing in extended memory.
What is expanded memory?—Expanded memory is memory that falls outside the linear memory addressing scheme. Note that expanded memory normally is accessed via upper memory. Refer to your textbook for more information about expanded memory.
What is virtual memory?—Virtual memory is an area of secondary storage that is set aside to be used as an area of RAM. Note that because it is secondary storage the access time is considerably slower than that of RAM.
What is ECC?—ECC (Error checking and correction) is a chip set feature on the system board that checks the integrity of data stored on DIMMs and can correct single-bit errors in a byte. More advanced ECC schemas can detect, but not correct, double-bit errors in a byte.