CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

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

2 / 50

The interval timer can operate in ____modes.

3 / 50

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

4 / 50

_________ is used to identify the cause of interrupt.

5 / 50

There are two main types of interrupts namely _________________.

6 / 50

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

7 / 50

__________is used to control the printer via the BIOS

8 / 50

_______ is LED control byte.

9 / 50

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

10 / 50

A single interrupt controller can arbitrate among ____ different devices.

11 / 50

DCE is _____________

12 / 50

Keyboard uses port ____ as status port.

13 / 50

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

14 / 50

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

15 / 50

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

16 / 50

The following command “outportb (0x61,inportb(0x61) & 0xFC);” will

17 / 50

Which port is known as Data Port______

18 / 50

At IRQ 7 Interrupt # ___ is used.

19 / 50

DMA stands for_________

20 / 50

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

21 / 50

______ is used to set time.

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

23 / 50

DSR stands for __________ .

24 / 50

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

25 / 50

DTE is ____________.

26 / 50

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

27 / 50

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

28 / 50

The ______ service # is not used in any interrupt.

29 / 50

File system used in CD’s is_______ file system

30 / 50

REGS is a Union

31 / 50

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

32 / 50

PPI is used to perform parallel communication

33 / 50

Communication between keyboard and keyboard controller is __________.

34 / 50

___________ is used to identify cause of interrupt.

35 / 50

Int 14H____________ can be used to send a byte

36 / 50

Maximum number of interrupts in a standard PC is

37 / 50

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

38 / 50

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

39 / 50

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

40 / 50

If CPUID instruction is not present then the processor can be a

41 / 50

PPI stands for _____________.

42 / 50

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

43 / 50

The service number is usually placed in the ________ register.

44 / 50

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

45 / 50

Register can be used to divide frequency is _________

46 / 50

The BIOS interrupt ________ can be used to configure RTC.

47 / 50

Only ________ ports are important from programming point of view.

48 / 50

Timer interrupt occurs _______ times every second by means of hardware.

49 / 50

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

50 / 50

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