CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

PPI stands for

2 / 50

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

3 / 50

Timer interrupt is a _________.

4 / 50

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

5 / 50

Hardware Interrupts are __________.

6 / 50

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

7 / 50

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

8 / 50

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

9 / 50

A single interrupt controller can arbitrate among ____ different devices.

10 / 50

The keyboard input character scan code is received at ___ port.

11 / 50

By cascading two DMAs ____ bits can be transferred.

12 / 50

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

13 / 50

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

14 / 50

The interval timer can operate in ____modes.

15 / 50

_________ is used to identify the cause of interrupt.

16 / 50

Communication between keyboard and keyboard controller is __________.

17 / 50

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

18 / 50

Following is not a method of I/O

19 / 50

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

20 / 50

Hardware Interrupts are __________.

21 / 50

There are __________ kinds of serial communication.

22 / 50

At IRQ 7 Interrupt # ___ is used.

23 / 50

______ is Disk interrupt.

24 / 50

There are two main types of interrupts, namely

25 / 50

On the execution of IRET instruction, number of bytes popped from stack is

26 / 50

___________ is used to identify cause of interrupt.

27 / 50

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

28 / 50

PPI is used to perform parallel communication

29 / 50

__________is used to control the printer via the BIOS

30 / 50

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

31 / 50

Only ________ ports are important from programming point of view.

32 / 50

Keyboard Status Byte is located at the address

33 / 50

PPI interconnection _______ bits is cleared to indicate low nibble is being sent.

34 / 50

To distinguish 486 with Pentium CPUID Test is used.

35 / 50

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

36 / 50

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

37 / 50

REGS is a Union

38 / 50

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

39 / 50

______ is LED control byte.

40 / 50

There are two main types of interrupts namely _________________.

41 / 50

________means typematic rate will be sent in next byte.

42 / 50

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

43 / 50

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

44 / 50

DTE is ___________

45 / 50

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

46 / 50

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

47 / 50

Operating system name contains ____ bytes in boot block.

48 / 50

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

49 / 50

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

50 / 50

Tail of keyboard should get to get the start of buffer.

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