Deck 14: 16-Bit Ms-Dos Programming Assessment

Question 1

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

Answer 1

False

Question 2

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

Answer 2

False

Question 3

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

Answer 3

False

Question 4

MS-DOS services are handled by INT 21h.

Question 5

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

Question 6

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

Question 7

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

Question 8

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

Question 9

Video services are handled by INT 16h.

Question 10

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

Question 11

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

Question 12

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

Question 13

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.

Question 14

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

Question 15

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