CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

Hardware Interrupts are __________.

2 / 50

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

3 / 50

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

4 / 50

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

5 / 50

Maximum number of interrupts in a standard PC is

6 / 50

PPI stands for _____________.

7 / 50

Interrupt Vector Table (IVT) in short is a _______ bytes sized table.

8 / 50

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

9 / 50

______ is used to set time.

10 / 50

Counter register can be used to divide clock signal.

11 / 50

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

12 / 50

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

13 / 50

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

14 / 50

_________ is used to identify the cause of interrupt.

15 / 50

DSR stands for __________ .

16 / 50

DMA stands for_________

17 / 50

DTE is ___________

18 / 50

The interval timer can operate in ____modes.

19 / 50

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

20 / 50

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

21 / 50

______ is LED control byte.

22 / 50

Interrupt 9 usually reads the _________ from keyboard.

23 / 50

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

24 / 50

Communication between keyboard and keyboard controller is __________.

25 / 50

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

26 / 50

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

27 / 50

At IRQ 7 Interrupt # ___ is used.

28 / 50

File can be______ viewed as collection of clusters or blocks.

29 / 50

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

30 / 50

Only ________ ports are important from programming point of view.

31 / 50

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

32 / 50

Int 14H____________ can be used to send a byte

33 / 50

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

34 / 50

LPTs can be swapped.

35 / 50

The ______ service # is not used in any interrupt.

36 / 50

The service number is usually placed in the ________ register.

37 / 50

Which of the following are types of ISR __________.

38 / 50

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

39 / 50

Control information in files is maintained using

40 / 50

Display device (Monitor) performs _________ I/O.

41 / 50

DTE is ____________.

42 / 50

The ________function initialize the COM port whose number is passed as parameter using BIOS services.

43 / 50

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

44 / 50

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

45 / 50

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

46 / 50

There are two main types of interrupts namely _________________.

47 / 50

REGS is a Union

48 / 50

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

49 / 50

DCE stands for __________.

50 / 50

DTE is ____________.

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