CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

Maximum number of interrupts in a standard PC is

2 / 50

In ____________each byte is needed to be encapsulated in start and end.

3 / 50

The service _________ is called the keyboard hook service.

4 / 50

DCE is _____________

5 / 50

The interval timer can operate in ____modes.

6 / 50

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

7 / 50

_________ is used to identify the cause of interrupt.

8 / 50

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

9 / 50

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

10 / 50

Int 14H____________ can be used to send a byte

11 / 50

Display device (Monitor) performs _________ I/O.

12 / 50

DCE stands for __________.

13 / 50

Int_____________ service 0 can be used to set the line parameter of the UART or COM port.

14 / 50

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

15 / 50

PPI is used to perform parallel communication

16 / 50

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

17 / 50

Display device (Monitor) performs _________ I/O.

18 / 50

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

19 / 50

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

20 / 50

There are two main types of interrupts namely _________________.

21 / 50

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

22 / 50

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

23 / 50

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

24 / 50

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

25 / 50

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

26 / 50

Interrupt 9 usually reads the _________ from keyboard.

27 / 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);

28 / 50

The interval timer can operate in ____modes.

29 / 50

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

30 / 50

________means typematic rate will be sent in next byte.

31 / 50

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

32 / 50

___________ is used to identify cause of interrupt.

33 / 50

__________is used to control the printer via the BIOS

34 / 50

The following command “outportb (0x61,inportb(0x61) & 0xFC);” will

35 / 50

BIOS support _____________UARTS as COM ports.

36 / 50

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

37 / 50

____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.

38 / 50

Only ________ ports are important from programming point of view.

39 / 50

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

40 / 50

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

41 / 50

Timer interrupt is a _________.

42 / 50

DSR stands for __________ .

43 / 50

An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.

44 / 50

UART stands for_______

45 / 50

Which of the following are types of ISR __________.

46 / 50

______ is Disk interrupt.

47 / 50

File system used in CD’s is_______ file system

48 / 50

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

49 / 50

Hardware Interrupts are __________.

50 / 50

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

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