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

___________ is used to identify cause of interrupt.

3 / 50

Hardware Interrupts are __________.

4 / 50

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

5 / 50

Only ________ ports are important from programming point of view.

6 / 50

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

7 / 50

The interval timer can operate in _______ modes.

8 / 50

PPI stands for

9 / 50

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

10 / 50

DSR stands for __________ .

11 / 50

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

12 / 50

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

13 / 50

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

14 / 50

REGS is a Union

15 / 50

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

16 / 50

Communication between keyboard and keyboard controller is __________.

17 / 50

By cascading two DMAs ____ bits can be transferred.

18 / 50

______ is Disk interrupt.

19 / 50

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

20 / 50

DCE is _____________

21 / 50

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

22 / 50

DTE is ____________.

23 / 50

To distinguish 486 with Pentium CPUID Test is used.

24 / 50

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

25 / 50

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

26 / 50

PPI stands for _____________.

27 / 50

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

28 / 50

Counter register can be used to divide clock signal.

29 / 50

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

30 / 50

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

31 / 50

There are two type of communication synchronous and Anti Synchronous

32 / 50

PPI is used to perform parallel communication

33 / 50

Control information in files is maintained using

34 / 50

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

35 / 50

BIOS support _____________UARTS as COM ports.

36 / 50

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

37 / 50

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

38 / 50

There are two main types of interrupts namely _________________.

39 / 50

A software interrupt does not require EOI (End of interrupt).

40 / 50

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

41 / 50

There are two main types of interrupts, namely

42 / 50

The ______ service # is not used in any interrupt.

43 / 50

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

44 / 50

Keyboard uses port ____ as status port.

45 / 50

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

46 / 50

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

47 / 50

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

48 / 50

__________is used to control the printer via the BIOS

49 / 50

The BIOS interrupt ________ can be used to configure RTC.

50 / 50

The service number is usually placed in the ________ register.

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