CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

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

2 / 50

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

3 / 50

______ is LED control byte.

4 / 50

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

5 / 50

To distinguish 486 with Pentium CPUID Test is used.

6 / 50

BPB stands for _________.

7 / 50

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

8 / 50

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

9 / 50

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

10 / 50

The BIOS interrupt ________ can be used to configure RTC.

11 / 50

Control information in files is maintained using

12 / 50

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

13 / 50

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

14 / 50

Each paragraph in keep function is ____ bytes in size.

15 / 50

File system used in CD’s is_______ file system

16 / 50

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

17 / 50

A single interrupt controller can arbitrate among ____ different devices.

18 / 50

DTE is ____________.

19 / 50

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

20 / 50

DCE stands for __________.

21 / 50

PPI is used to perform parallel communication

22 / 50

By cascading two DMAs ____ bits can be transferred.

23 / 50

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

24 / 50

DTE is ___________

25 / 50

The interval timer can operate in ____modes.

26 / 50

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

27 / 50

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

28 / 50

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

29 / 50

The________ function uses the COM port number to receive a byte from the COM port using BIOS services.

30 / 50

Int 14H____________ can be used to send a byte

31 / 50

NMI Stand for

32 / 50

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

33 / 50

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

34 / 50

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

35 / 50

Interrupt Vector Table (IVT) in short is a _______ bytes sized table.

36 / 50

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

37 / 50

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

38 / 50

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

39 / 50

------------ is used to read time from RTC

40 / 50

UART stands for_______

41 / 50

File can be______ viewed as collection of clusters or blocks.

42 / 50

The service _________ is called the keyboard hook service.

43 / 50

The interval timer can operate in _______ modes.

44 / 50

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

45 / 50

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

46 / 50

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

47 / 50

Only ________ ports are important from programming point of view.

48 / 50

______ is Disk interrupt.

49 / 50

DCE is _____________

50 / 50

Display device (Monitor) performs _________ I/O.

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