CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

Following is not a method of I/O

2 / 50

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

3 / 50

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

4 / 50

DTE is ____________.

5 / 50

BIOS DO NOT support ______.

6 / 50

By cascading two DMAs ____ bits can be transferred.

7 / 50

The interval timer can operate in ____modes.

8 / 50

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

9 / 50

Display device (Monitor) performs _________ I/O.

10 / 50

The interval timer can operate in ____modes.

11 / 50

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

12 / 50

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

13 / 50

In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.

14 / 50

A single interrupt controller can arbitrate among ____ different devices.

15 / 50

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

16 / 50

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

17 / 50

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

18 / 50

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

19 / 50

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

20 / 50

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

21 / 50

DSR stands for __________ .

22 / 50

Each paragraph in keep function is ____ bytes in size.

23 / 50

DCE stands for __________.

24 / 50

Which port is known as Data Port______

25 / 50

Control information in files is maintained using

26 / 50

Timer interrupt occurs _______ times every second by means of hardware.

27 / 50

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

28 / 50

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

29 / 50

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

30 / 50

Timer interrupt is a _________.

31 / 50

The ______ service # is not used in any interrupt.

32 / 50

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

33 / 50

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

34 / 50

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

35 / 50

NMI Stand for

36 / 50

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

37 / 50

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

38 / 50

The service number is usually placed in the ________ register.

39 / 50

There are two main types of interrupts, namely

40 / 50

Maximum number of interrupts in a standard PC is

41 / 50

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

42 / 50

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

43 / 50

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

44 / 50

Keyboard uses port ____ as status port.

45 / 50

Int 14H __________ can be used to receive a byte.

46 / 50

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

47 / 50

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

48 / 50

DTE is ___________

49 / 50

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

50 / 50

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

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