7

Question 1

—- provides raw access while —- provides cooked services.

Answer 1

BIOS, DOS

Question 2

The actual command tail is stored terminated by a —

Answer 2

CR
Carriage return

Question 3

Device driver file starts with a —- containing a —– to the next driver. In the —– followed by device attribute word.

Answer 3

header , link
first four byter

Question 4

If the bit is a —– the device is a character device. and otherwise —- device.

Answer 4

zero, block

Question 5

Strategy routine?

Answer 5

is called whenever the device is needed and it is passed a request header.

Question 6

For every command the —– of request header are same.

Answer 6

first 13 bytes

Question 7

The data starts with a 1 bit is called —- and one to two 0 bits are called —–.

Answer 7

Start bit , stop bits.

Question 8

The duration of a bit must be precisely known at both ends called —— of the communication.

Answer 8

baud rate

Question 9

The port parameters in AL consists of

Answer 9

1- Baud rate
2- parity scheme
3- number of stop bits
4- number of data bits

Question 10

Serial port is also accessible by

Answer 10

I/O ports