CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

___________ is used to identify cause of interrupt.

2 / 50

PPI stands for

3 / 50

In keyboard status byte bit no. 2 and 3 are used for ctrl and alt keys respectively. which of the following condition is used to check that Ctrl + Alt keys are pressed. Where: unsigned char far * scr = (unsigned char far *)(0x00400017);

4 / 50

_________ is used to identify the cause of interrupt.

5 / 50

DMA stands for_________

6 / 50

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

7 / 50

If keyboard buffer is empty the head and tail points at the same location.

8 / 50

Following is not a method of I/O

9 / 50

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

10 / 50

Standard PC can have _____ PPI.

11 / 50

Register can be used to divide frequency is _________

12 / 50

Maximum number of interrupts in a standard PC is

13 / 50

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

14 / 50

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

15 / 50

Counter register can be used to divide clock signal.

16 / 50

The service number is usually placed in the ________ register.

17 / 50

PPI is used to perform parallel communication

18 / 50

Command register is an _____ bit register

19 / 50

BPB stands for _________.

20 / 50

Timer interrupt is a _________.

21 / 50

DCE is _____________

22 / 50

The ______ service # is not used in any interrupt.

23 / 50

DTE is ____________.

24 / 50

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

25 / 50

DSR stands for __________ .

26 / 50

There are two main types of interrupts namely _________________.

27 / 50

If we use keep (0, 1000) in a TSR program, the memory allocated to it is

28 / 50

The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.

29 / 50

Int 14H __________ can be used to set the line parameter of the UART or COM port.

30 / 50

PPI interconnection _______ bits is cleared to indicate low nibble is being sent.

31 / 50

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

32 / 50

By cascading two DMAs ____ bits can be transferred.

33 / 50

File system used in CD’s is_______ file system

34 / 50

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

35 / 50

The Function of I/O controller is to provide ____________.

36 / 50

Software based flow control make use of -------- control characters

37 / 50

To access the block within cluster using BIOS services the cluster number should be converted into _____.

38 / 50

Timer interrupt occurs _______ times every second by means of hardware.

39 / 50

In case of synchronous communication a timing signal is required to identify the start and end of a bit.

40 / 50

------------ is used to read date from RTC

41 / 50

Communication between keyboard and keyboard controller is __________.

42 / 50

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

43 / 50

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

44 / 50

Each paragraph in keep function is ____ bytes in size.

45 / 50

BIOS DO NOT support ______.

46 / 50

A single interrupt controller can arbitrate among ____ different devices.

47 / 50

By cascading two DMAs ____ bits can be transferred.

48 / 50

________means typematic rate will be sent in next byte.

49 / 50

At IRQ 7 Interrupt # ___ is used.

50 / 50

There are two main types of interrupts, namely

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