CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

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

2 / 50

Following is not a method of I/O

3 / 50

The interval timer can operate in ____modes.

4 / 50

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

5 / 50

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

6 / 50

PPI is used to perform parallel communication

7 / 50

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

8 / 50

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

9 / 50

DTE is ____________.

10 / 50

The interval timer can operate in _______ modes.

11 / 50

File system used in CD’s is_______ file system

12 / 50

__________is used to control the printer via the BIOS

13 / 50

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

14 / 50

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

15 / 50

___________ is used to identify cause of interrupt.

16 / 50

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

17 / 50

DTE is ____________.

18 / 50

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

19 / 50

BIOS DO NOT support ______.

20 / 50

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

21 / 50

______ is LED control byte.

22 / 50

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

23 / 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);

24 / 50

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

25 / 50

Register can be used to divide frequency is _________

26 / 50

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

27 / 50

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

28 / 50

Standard PC can have _____ PPI.

29 / 50

Keyboard Status Byte is located at the address

30 / 50

The ____________ function simply enables the self test facility within the modem control register

31 / 50

File system used in CD’s is_______ file system

32 / 50

Maximum number of interrupts in a standard PC is

33 / 50

_______ is LED control byte.

34 / 50

Standard PC operates in two modes in terms of memory which are

35 / 50

BPB stands for _________.

36 / 50

DSR stands for __________ .

37 / 50

DMA stands for_________

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

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

40 / 50

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

41 / 50

_________ is used to identify the cause of interrupt.

42 / 50

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

43 / 50

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

44 / 50

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

45 / 50

PPI stands for _____________.

46 / 50

________means typematic rate will be sent in next byte.

47 / 50

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

48 / 50

Only ________ ports are important from programming point of view.

49 / 50

DSR stands for __________ .

50 / 50

There are two type of communication synchronous and Anti Synchronous

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