CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

DCE stands for __________.

2 / 50

DMA stands for_________

3 / 50

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

4 / 50

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

5 / 50

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

6 / 50

If printer is _____ then printer sends back the ACK signal to the printer interface

7 / 50

Set the Interrupt vector means to change the double word sized interrupt vector within IVT.

8 / 50

The interval timer can operate in _______ modes.

9 / 50

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

10 / 50

DTE is ____________.

11 / 50

The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).

12 / 50

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

13 / 50

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

14 / 50

Int ________ is used to control the printer via the BIOS.

15 / 50

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

16 / 50

Hardware Interrupts are __________.

17 / 50

BPB stands for _________.

18 / 50

Only ________ ports are important from programming point of view.

19 / 50

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

20 / 50

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

21 / 50

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

22 / 50

If CPUID instruction is not present then the processor can be a

23 / 50

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

24 / 50

At IRQ 7 Interrupt # ___ is used.

25 / 50

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

26 / 50

Operating system name contains ____ bytes in boot block.

27 / 50

The service _________ is called the keyboard hook service.

28 / 50

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

29 / 50

Keyboard uses port ____ as status port.

30 / 50

Maximum number of interrupts in a standard PC is

31 / 50

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

32 / 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);

33 / 50

The output on the monitor is controlled by a controller called __________within the PC.

34 / 50

Interrupt 9 usually reads the _________ from keyboard.

35 / 50

______ is used to set time.

36 / 50

IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.

37 / 50

There are __________ kinds of serial communication.

38 / 50

______ is LED control byte.

39 / 50

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

40 / 50

There are two main types of interrupts, namely

41 / 50

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

42 / 50

------------ is used to set time from RTC

43 / 50

Following is not a method of I/O

44 / 50

The service number is usually placed in the ________ register.

45 / 50

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

46 / 50

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

47 / 50

File system used in CD’s is_______ file system

48 / 50

UART stands for_______

49 / 50

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

50 / 50

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

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