CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

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

2 / 50

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

3 / 50

DTE is ___________

4 / 50

Standard PC can have _____ PPI.

5 / 50

Hardware Interrupts are __________.

6 / 50

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

7 / 50

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

8 / 50

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

9 / 50

File system used in CD’s is_______ file system

10 / 50

Interrupt ______ is used to get or set the time.

11 / 50

Keyboard Status Byte is located at the address

12 / 50

Standard PC operates in two modes in terms of memory which are

13 / 50

_______ is LED control byte.

14 / 50

An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.

15 / 50

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

16 / 50

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

17 / 50

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

18 / 50

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

19 / 50

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

20 / 50

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

21 / 50

Only ________ ports are important from programming point of view.

22 / 50

Timer interrupt is a _________.

23 / 50

At IRQ 7 Interrupt # ___ is used.

24 / 50

DSR stands for __________ .

25 / 50

Hardware Interrupts are __________.

26 / 50

__________is used to control the printer via the BIOS

27 / 50

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

28 / 50

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

29 / 50

DSR stands for __________ .

30 / 50

Control information in files is maintained using

31 / 50

______ is used to set time.

32 / 50

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

33 / 50

File system used in CD’s is_______ file system

34 / 50

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

35 / 50

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

36 / 50

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

37 / 50

PPI is used to perform parallel communication

38 / 50

Following is not a method of I/O

39 / 50

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

40 / 50

By cascading two DMAs ____ bits can be transferred.

41 / 50

The interval timer can operate in ____modes.

42 / 50

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

43 / 50

The interval timer can operate in ____modes.

44 / 50

Keyboard uses port ____ as status port.

45 / 50

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

46 / 50

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

47 / 50

There are two main types of interrupts, namely

48 / 50

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

49 / 50

Communication between keyboard and keyboard controller is __________.

50 / 50

The service number is usually placed in the ________ register.

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