CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

PPI stands for _____________.

2 / 50

Keyboard Status Byte is located at the address

3 / 50

Only ________ ports are important from programming point of view.

4 / 50

To distinguish 486 with Pentium CPUID Test is used.

5 / 50

Total No. of bytes that can be stored in Keyboard Buffer is____.

6 / 50

Keyboard uses port ____ as status port.

7 / 50

_____ bit is cleared to indicate the low nibble is being sent.

8 / 50

The________ function uses the COM port number to receive a byte from the COM port using BIOS services.

9 / 50

A software interrupt does not require EOI (End of interrupt).

10 / 50

DCE is _____________

11 / 50

To store each character in keyboard buffer ____ bytes are required.

12 / 50

File can be______ viewed as collection of clusters or blocks.

13 / 50

Standard PC operates in two modes in terms of memory which are

14 / 50

Int 14H______ can be used to set the line parameter of the UART or COM port

15 / 50

The bit number _______ of the coprocessor control word is the interrupt enable flag.

16 / 50

_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.

17 / 50

Int 14H____________ can be used to send a byte

18 / 50

UART stands for_______

19 / 50

There are two main types of interrupts, namely

20 / 50

The keyboard makes use of interrupt number _______ for its input operations.

21 / 50

Only ________ ports are important from programming point of view.

22 / 50

Standard PC operates in two modes in terms of memory which are

23 / 50

Timer interrupt is a _________.

24 / 50

The amount of memory above conventional memory (extended memory) can be determined using the service _______.

25 / 50

________ is a device incorporated into the PC to update time even if the computer is off.

26 / 50

In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.

27 / 50

The keyboard makes use of interrupt number _______ for its input operations.

28 / 50

Following is not a method of I/O

29 / 50

To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.

30 / 50

DCE stands for __________.

31 / 50

Display device (Monitor) performs _________ I/O.

32 / 50

Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.

33 / 50

The -------- function receive a byte and COM port number is passed as parameter using BIOS service

34 / 50

In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles

35 / 50

The PPI acts as an interface between the CPU and a parallel ________ .

36 / 50

Int 14H______ can be used to set the line parameter of the UART or COM port

37 / 50

------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication

38 / 50

Command register is an _____ bit register

39 / 50

At IRQ 7 Interrupt # ___ is used.

40 / 50

------------ is used to read time from RTC

41 / 50

___________ is used to identify cause of interrupt.

42 / 50

____ No. of bytes are used to store the character in the keyboard buffer.

43 / 50

If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.

44 / 50

Int 14H __________ can be used to receive a byte.

45 / 50

The BIOS interrupt 0x1AH can be used to configure real time clock

46 / 50

File system used in CD’s is_______ file system

47 / 50

The keyboard input character scan code is received at ___ port.

48 / 50

DSR stands for __________ .

49 / 50

In self test mode the output of the UART is routed to its input.

50 / 50

Standard PC can have _____ PPI.

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