CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

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

2 / 50

PPI is used to perform parallel communication

3 / 50

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

4 / 50

DTE is ____________.

5 / 50

REGS is a Union

6 / 50

DSR stands for __________ .

7 / 50

File can be______ viewed as collection of clusters or blocks.

8 / 50

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

9 / 50

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

10 / 50

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

11 / 50

Operating system name contains ____ bytes in boot block.

12 / 50

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

13 / 50

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

14 / 50

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

15 / 50

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

16 / 50

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

17 / 50

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

18 / 50

______ is LED control byte.

19 / 50

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

20 / 50

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

21 / 50

LPTs can be swapped.

22 / 50

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

23 / 50

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

24 / 50

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

25 / 50

Which of the following are types of ISR __________.

26 / 50

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

27 / 50

Int 14H____________ can be used to send a byte

28 / 50

There are __________ kinds of serial communication.

29 / 50

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

30 / 50

_______ is LED control byte.

31 / 50

File system used in CD’s is_______ file system

32 / 50

Only ________ ports are important from programming point of view.

33 / 50

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

34 / 50

Interrupt 9 usually reads the _________ from keyboard.

35 / 50

The service number is usually placed in the ________ register.

36 / 50

There are two main types of interrupts namely _________________.

37 / 50

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

38 / 50

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

39 / 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);

40 / 50

Communication between keyboard and keyboard controller is __________.

41 / 50

The interval timer can operate in ____modes.

42 / 50

Command register is an _____ bit register

43 / 50

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

44 / 50

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

45 / 50

Interrupt ______ is used to get or set the time.

46 / 50

Timer interrupt is a _________.

47 / 50

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

48 / 50

________means typematic rate will be sent in next byte.

49 / 50

There are two main types of interrupts, namely

50 / 50

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

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