CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

Hardware Interrupts are __________.

2 / 50

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

3 / 50

File system used in CD’s is_______ file system

4 / 50

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

5 / 50

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

6 / 50

Timer interrupt is a _________.

7 / 50

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

8 / 50

DTE is ____________.

9 / 50

PPI stands for _____________.

10 / 50

Command register is an _____ bit register

11 / 50

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

12 / 50

______ is Disk interrupt.

13 / 50

DTE is ____________.

14 / 50

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

15 / 50

Standard PC can have _____ PPI.

16 / 50

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

17 / 50

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

18 / 50

______ is LED control byte.

19 / 50

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

20 / 50

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

21 / 50

The bit number _______ of the coprocessor control word is the interrupt enable flag.

22 / 50

DSR stands for __________ .

23 / 50

Display device (Monitor) performs _________ I/O.

24 / 50

The ______ service # is not used in any interrupt.

25 / 50

In keyboard status byte bit no. 2 and 3 are used for ctrl and alt keys respectively. which of the following condition is used to check that Ctrl + Alt keys are pressed. Where: unsigned char far * scr = (unsigned char far *)(0x00400017);

26 / 50

DMA stands for_________

27 / 50

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

28 / 50

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

29 / 50

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

30 / 50

File system used in CD’s is_______ file system

31 / 50

Register can be used to divide frequency is _________

32 / 50

DCE is _____________

33 / 50

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

34 / 50

Keyboard uses port ____ as status port.

35 / 50

UART stands for_______

36 / 50

Hardware Interrupts are __________.

37 / 50

File can be______ viewed as collection of clusters or blocks.

38 / 50

Software based flow control make use of -------- control characters

39 / 50

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

40 / 50

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

41 / 50

There are two main types of interrupts, namely

42 / 50

DTE is ___________

43 / 50

There are __________ kinds of serial communication.

44 / 50

Counter register can be used to divide clock signal.

45 / 50

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

46 / 50

The following command “outportb (0x61,inportb(0x61) & 0xFC);” will

47 / 50

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

48 / 50

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

49 / 50

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

50 / 50

________means typematic rate will be sent in next byte.

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