CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

PPI stands for _____________.

2 / 50

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

3 / 50

At IRQ 7 Interrupt # ___ is used.

4 / 50

Interrupt 9 usually reads the _________ from keyboard.

5 / 50

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

6 / 50

To distinguish 486 with Pentium CPUID Test is used.

7 / 50

NMI Stand for

8 / 50

There are two main types of interrupts, namely

9 / 50

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

10 / 50

Hardware Interrupts are __________.

11 / 50

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

12 / 50

Which port is known as Data Port______

13 / 50

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

14 / 50

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

15 / 50

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

16 / 50

The ______ service # is not used in any interrupt.

17 / 50

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

18 / 50

________means typematic rate will be sent in next byte.

19 / 50

Interrupt _____ is empty; we can use its vector as a flag.

20 / 50

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

21 / 50

Following is not a method of I/O

22 / 50

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

23 / 50

File system used in CD’s is_______ file system

24 / 50

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

25 / 50

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

26 / 50

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

27 / 50

The service number is usually placed in the ________ register.

28 / 50

______ is used to set time.

29 / 50

_______ is LED control byte.

30 / 50

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

31 / 50

Display device (Monitor) performs _________ I/O.

32 / 50

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

33 / 50

The interval timer can operate in ____modes.

34 / 50

Operating system name contains ____ bytes in boot block.

35 / 50

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

36 / 50

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

37 / 50

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

38 / 50

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

39 / 50

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

40 / 50

UART stands for_______

41 / 50

LPTs can be swapped.

42 / 50

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

43 / 50

Communication between keyboard and keyboard controller is __________.

44 / 50

DCE stands for __________.

45 / 50

File system used in CD’s is_______ file system

46 / 50

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

47 / 50

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

48 / 50

Interrupt service number is usually placed in ____________ register.

49 / 50

------------ is used to set time from RTC

50 / 50

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

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