CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

File system used in CD’s is_______ file system

2 / 50

Timer interrupt is a _________.

3 / 50

Keyboard uses port ____ as status port.

4 / 50

PPI stands for _____________.

5 / 50

DCE stands for __________.

6 / 50

Hardware Interrupts are __________.

7 / 50

The interval timer can operate in ____modes.

8 / 50

Hardware Interrupts are __________.

9 / 50

Int 14H __________ can be used to receive a byte.

10 / 50

REGS is a Union

11 / 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);

12 / 50

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

13 / 50

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

14 / 50

DCE is _____________

15 / 50

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

16 / 50

DMA stands for_________

17 / 50

The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .

18 / 50

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

19 / 50

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

20 / 50

______ is Disk interrupt.

21 / 50

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

22 / 50

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

23 / 50

DSR stands for __________ .

24 / 50

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

25 / 50

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

26 / 50

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

27 / 50

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

28 / 50

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

29 / 50

UART stands for_______

30 / 50

The BIOS interrupt ________ can be used to configure RTC.

31 / 50

NMI Stand for

32 / 50

______ is used to set time.

33 / 50

Keyboard Status Byte is located at the address

34 / 50

BIOS support _____________UARTS as COM ports.

35 / 50

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

36 / 50

At IRQ 7 Interrupt # ___ is used.

37 / 50

___________ is used to identify cause of interrupt.

38 / 50

BIOS DO NOT support ______.

39 / 50

Register can be used to divide frequency is _________

40 / 50

Display device (Monitor) performs _________ I/O.

41 / 50

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

42 / 50

Communication between keyboard and keyboard controller is __________.

43 / 50

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

44 / 50

Control information in files is maintained using

45 / 50

The ______ service # is not used in any interrupt.

46 / 50

Interrupt 9 usually reads the _________ from keyboard.

47 / 50

BPB stands for _________.

48 / 50

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

49 / 50

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

50 / 50

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

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