CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

DSR stands for __________ .

2 / 50

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

3 / 50

Interrupt service number is usually placed in ____________ register.

4 / 50

Int 14H____________ can be used to send a byte

5 / 50

Display device (Monitor) performs _________ I/O.

6 / 50

To distinguish 486 with Pentium CPUID Test is used.

7 / 50

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

8 / 50

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

9 / 50

The BIOS interrupt ________ can be used to configure RTC.

10 / 50

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

11 / 50

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

12 / 50

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

13 / 50

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

14 / 50

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

15 / 50

Keyboard uses port ____ as status port.

16 / 50

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

17 / 50

Keyboard Status Byte is located at the address

18 / 50

Register can be used to divide frequency is _________

19 / 50

Interrupt 9 usually reads the _________ from keyboard.

20 / 50

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

21 / 50

Following is not a method of I/O

22 / 50

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

23 / 50

Hardware Interrupts are __________.

24 / 50

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

25 / 50

Operating system name contains ____ bytes in boot block.

26 / 50

If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.

27 / 50

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

28 / 50

______ is LED control byte.

29 / 50

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

30 / 50

___________ is used to identify cause of interrupt.

31 / 50

The interval timer can operate in _______ modes.

32 / 50

Maximum number of interrupts in a standard PC is

33 / 50

DSR stands for __________ .

34 / 50

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

35 / 50

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

36 / 50

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

37 / 50

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

38 / 50

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

39 / 50

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

40 / 50

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

41 / 50

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

42 / 50

By cascading two DMAs ____ bits can be transferred.

43 / 50

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

44 / 50

At IRQ 7 Interrupt # ___ is used.

45 / 50

Timer interrupt is a _________.

46 / 50

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

47 / 50

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

48 / 50

PPI stands for

49 / 50

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

50 / 50

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

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