Exam 14: 16-Bit Ms-Dos Programming Assessment

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The device names for parallel printer port 1 are both PRN and LPT1.

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True

Video memory begins at offset 00100h in the IBM-PC's memory.

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False

The transient command processor always remains in memory at an address just above the DOS kernel.

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False

When a MS-DOS function needs to access the computer's hardware,it calls a function in the BIOS.

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There is no INT 21h function that lets you set a file's I/O pointer past the end of a file.

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MS-DOS services are handled by INT 21h.

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Writing data to a text file usually takes more CPU time than writing data to a binary file.

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INT 21h,function 10h writes a string to standard output.

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When a file is opened by an MS-DOS function,the function returns an integer handle.This handle must be used for all subsequent reading and/or writing to the file.

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The MS-DOS command tail is located in the data segment when a program begins to execute.

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The INT instruction uses a value in the BX register to locate an entry in the interrupt vector table.

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Video services are handled by INT 16h.

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Real-mode programming is also known as 16-bit mode programming.

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The < operator,when used at the MS-DOS command prompt,redirects the current program's input.

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MS-DOS function calls are also called interrupts because they use the INT instruction.

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