CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

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

2 / 50

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

3 / 50

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

4 / 50

Keyboard Status Byte is located at the address

5 / 50

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

6 / 50

The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.

7 / 50

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

8 / 50

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

9 / 50

Operating system name contains ____ bytes in boot block.

10 / 50

Interrupt ______ is used to get or set the time.

11 / 50

Standard PC can have _____ PPI.

12 / 50

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

13 / 50

DCE stands for __________.

14 / 50

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

15 / 50

DSR stands for __________ .

16 / 50

The amount of memory above conventional memory (extended memory) can be determined using the service _______.

17 / 50

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

18 / 50

DTE is ____________.

19 / 50

Keyboard uses port ____ as status port.

20 / 50

There are two main types of interrupts namely _________________.

21 / 50

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

22 / 50

______ is Disk interrupt.

23 / 50

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

24 / 50

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

25 / 50

The service _________ is called the keyboard hook service.

26 / 50

The interval timer can operate in _______ modes.

27 / 50

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

28 / 50

A single interrupt controller can arbitrate among ____ different devices.

29 / 50

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

30 / 50

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

31 / 50

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

32 / 50

To distinguish 486 with Pentium CPUID Test is used.

33 / 50

Each paragraph in keep function is ____ bytes in size.

34 / 50

Communication between keyboard and keyboard controller is __________.

35 / 50

NMI Stand for

36 / 50

Which of the following are types of ISR __________.

37 / 50

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

38 / 50

BIOS DO NOT support ______.

39 / 50

DTE is ___________

40 / 50

DMA stands for_________

41 / 50

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

42 / 50

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

43 / 50

There are __________ kinds of serial communication.

44 / 50

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

45 / 50

LPTs can be swapped.

46 / 50

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

47 / 50

__________is used to control the printer via the BIOS

48 / 50

File system used in CD’s is_______ file system

49 / 50

______ is used to set time.

50 / 50

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

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