CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

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

2 / 50

Interrupt service number is usually placed in ____________ register.

3 / 50

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

4 / 50

BPB stands for _________.

5 / 50

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

6 / 50

PPI stands for

7 / 50

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

8 / 50

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

9 / 50

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

10 / 50

Maximum number of interrupts in a standard PC is

11 / 50

DSR stands for __________ .

12 / 50

DTE is ____________.

13 / 50

________means typematic rate will be sent in next byte.

14 / 50

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

15 / 50

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

16 / 50

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

17 / 50

There are two type of communication synchronous and Anti Synchronous

18 / 50

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

19 / 50

Display device (Monitor) performs _________ I/O.

20 / 50

File system used in CD’s is_______ file system

21 / 50

DMA stands for_________

22 / 50

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

23 / 50

PPI stands for _____________.

24 / 50

The interval timer can operate in ____modes.

25 / 50

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

26 / 50

Register can be used to divide frequency is _________

27 / 50

Counter register can be used to divide clock signal.

28 / 50

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

29 / 50

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

30 / 50

A single interrupt controller can arbitrate among ____ different devices.

31 / 50

Interrupt 9 usually reads the _________ from keyboard.

32 / 50

To distinguish 486 with Pentium CPUID Test is used.

33 / 50

DCE stands for __________.

34 / 50

DTE is ____________.

35 / 50

The ______ service # is not used in any interrupt.

36 / 50

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

37 / 50

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

38 / 50

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

39 / 50

Hardware Interrupts are __________.

40 / 50

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

41 / 50

Interrupt _____ is empty; we can use its vector as a flag.

42 / 50

Standard PC can have _____ PPI.

43 / 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);

44 / 50

__________is used to control the printer via the BIOS

45 / 50

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

46 / 50

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

47 / 50

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

48 / 50

REGS is a Union

49 / 50

The BIOS interrupt ________ can be used to configure RTC.

50 / 50

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

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