CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

The ______ service # is not used in any interrupt.

2 / 50

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

3 / 50

_________ is used to identify the cause of interrupt.

4 / 50

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

5 / 50

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

6 / 50

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

7 / 50

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

8 / 50

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

9 / 50

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

10 / 50

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

11 / 50

The interval timer can operate in ____modes.

12 / 50

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

13 / 50

LPTs can be swapped.

14 / 50

File can be______ viewed as collection of clusters or blocks.

15 / 50

Display device (Monitor) performs _________ I/O.

16 / 50

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

17 / 50

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

18 / 50

By cascading two DMAs ____ bits can be transferred.

19 / 50

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

20 / 50

The BIOS interrupt ________ can be used to configure RTC.

21 / 50

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

22 / 50

Command register is an _____ bit register

23 / 50

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

24 / 50

Which port is known as Data Port______

25 / 50

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

26 / 50

BPB stands for _________.

27 / 50

Control information in files is maintained using

28 / 50

DTE is ____________.

29 / 50

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

30 / 50

_______ is LED control byte.

31 / 50

DCE stands for __________.

32 / 50

There are __________ kinds of serial communication.

33 / 50

Interrupt 9 usually reads the _________ from keyboard.

34 / 50

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

35 / 50

Display device (Monitor) performs _________ I/O.

36 / 50

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

37 / 50

Hardware Interrupts are __________.

38 / 50

Which of the following are types of ISR __________.

39 / 50

We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.

40 / 50

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

41 / 50

PPI is used to perform parallel communication

42 / 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);

43 / 50

DSR stands for __________ .

44 / 50

NMI Stand for

45 / 50

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

46 / 50

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

47 / 50

There are two type of communication synchronous and Anti Synchronous

48 / 50

There are two main types of interrupts, namely

49 / 50

At IRQ 7 Interrupt # ___ is used.

50 / 50

Bit number _______ of coprocessor control word is the Interrupt Enable Flag.

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