CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

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

2 / 50

If keyboard buffer is empty the head and tail points at the same location.

3 / 50

Counter register can be used to divide clock signal.

4 / 50

There are two type of communication synchronous and Anti Synchronous

5 / 50

Only ________ ports are important from programming point of view.

6 / 50

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

7 / 50

What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?

8 / 50

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

9 / 50

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

10 / 50

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

11 / 50

The interval timer can operate in ____modes.

12 / 50

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

13 / 50

Timer interrupt is a _________.

14 / 50

There are __________ kinds of serial communication.

15 / 50

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

16 / 50

______ is LED control byte.

17 / 50

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

18 / 50

___________ is used to identify cause of interrupt.

19 / 50

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

20 / 50

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

21 / 50

BIOS DO NOT support ______.

22 / 50

NMI Stand for

23 / 50

BPB stands for _________.

24 / 50

DCE stands for __________.

25 / 50

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

26 / 50

There are two main types of interrupts namely _________________.

27 / 50

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

28 / 50

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

29 / 50

UART stands for_______

30 / 50

A single interrupt controller can arbitrate among ____ different devices.

31 / 50

Maximum number of interrupts in a standard PC is

32 / 50

LPTs can be swapped.

33 / 50

The interval timer can operate in ____modes.

34 / 50

Operating system name contains ____ bytes in boot block.

35 / 50

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

36 / 50

Register can be used to divide frequency is _________

37 / 50

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

38 / 50

Interrupt service number is usually placed in ____________ register.

39 / 50

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

40 / 50

Keyboard Status Byte is located at the address

41 / 50

Interrupt ______ is used to get or set the time.

42 / 50

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

43 / 50

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

44 / 50

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

45 / 50

Hardware Interrupts are __________.

46 / 50

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

47 / 50

File system used in CD’s is_______ file system

48 / 50

______ is used to set time.

49 / 50

DMA stands for_________

50 / 50

File can be______ viewed as collection of clusters or blocks.

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