CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

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

2 / 50

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

3 / 50

LPTs can be swapped.

4 / 50

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

5 / 50

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

6 / 50

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

7 / 50

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

8 / 50

The ______ service # is not used in any interrupt.

9 / 50

UART stands for_______

10 / 50

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

11 / 50

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

12 / 50

File system used in CD’s is_______ file system

13 / 50

To access the block within cluster using BIOS services the cluster number should be converted into _____.

14 / 50

DSR stands for __________ .

15 / 50

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

16 / 50

To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.

17 / 50

NMI Stand for

18 / 50

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

19 / 50

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

20 / 50

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

21 / 50

PPI stands for

22 / 50

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

23 / 50

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

24 / 50

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

25 / 50

There are two main types of interrupts, namely

26 / 50

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

27 / 50

------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication

28 / 50

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

29 / 50

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

30 / 50

Display device (Monitor) performs _________ I/O.

31 / 50

DTE is ____________.

32 / 50

There are two main types of interrupts namely _________________.

33 / 50

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

34 / 50

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

35 / 50

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

36 / 50

Only ________ ports are important from programming point of view.

37 / 50

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

38 / 50

DMA stands for_________

39 / 50

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

40 / 50

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

41 / 50

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

42 / 50

DCE stands for __________.

43 / 50

Keyboard uses port ____ as status port.

44 / 50

Interrupt ______ is used to get or set the time.

45 / 50

BIOS DO NOT support ______.

46 / 50

The interval timer can operate in ____modes.

47 / 50

BIOS support _____________UARTS as COM ports.

48 / 50

A single interrupt controller can arbitrate among ____ different devices.

49 / 50

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

50 / 50

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

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