CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

PPI stands for _____________.

2 / 50

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

3 / 50

_______ is LED control byte.

4 / 50

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

5 / 50

LPTs can be swapped.

6 / 50

Display device (Monitor) performs _________ I/O.

7 / 50

Bit number _______ of coprocessor control word is the Interrupt Enable Flag.

8 / 50

Keyboard Status Byte is located at the address

9 / 50

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

10 / 50

There are two main types of interrupts namely _________________.

11 / 50

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

12 / 50

PPI interconnection _______ bits is cleared to indicate low nibble is being sent.

13 / 50

By cascading two DMAs ____ bits can be transferred.

14 / 50

The service number is usually placed in the ________ register.

15 / 50

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

16 / 50

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

17 / 50

DTE is ___________

18 / 50

PPI stands for

19 / 50

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

20 / 50

Which port is known as Data Port______

21 / 50

NMI Stand for

22 / 50

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

23 / 50

------------ is used to read date from RTC

24 / 50

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

25 / 50

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

26 / 50

REGS is a Union

27 / 50

UART stands for_______

28 / 50

File system used in CD’s is_______ file system

29 / 50

Each paragraph in keep function is ____ bytes in size.

30 / 50

Which of the following are types of ISR __________.

31 / 50

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

32 / 50

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

33 / 50

Only ________ ports are important from programming point of view.

34 / 50

BPB stands for _________.

35 / 50

Int_____________ service 0 can be used to set the line parameter of the UART or COM port.

36 / 50

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

37 / 50

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

38 / 50

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

39 / 50

By cascading two DMAs ____ bits can be transferred.

40 / 50

Hardware Interrupts are __________.

41 / 50

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

42 / 50

If printer is _____ then printer sends back the ACK signal to the printer interface

43 / 50

To distinguish 486 with Pentium CPUID Test is used.

44 / 50

BIOS support _____________UARTS as COM ports.

45 / 50

The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).

46 / 50

Standard PC can have _____ PPI.

47 / 50

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

48 / 50

Hardware Interrupts are __________.

49 / 50

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

50 / 50

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

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