CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

The BIOS interrupt ________ can be used to configure RTC.

2 / 50

UART stands for_______

3 / 50

To distinguish 486 with Pentium CPUID Test is used.

4 / 50

Communication between keyboard and keyboard controller is __________.

5 / 50

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

6 / 50

______ is LED control byte.

7 / 50

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

8 / 50

File system used in CD’s is_______ file system

9 / 50

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

10 / 50

A single interrupt controller can arbitrate among ____ different devices.

11 / 50

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

12 / 50

------------ is used to set time from RTC

13 / 50

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

14 / 50

DTE is ___________

15 / 50

What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?

16 / 50

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

17 / 50

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

18 / 50

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

19 / 50

BIOS support _____________UARTS as COM ports.

20 / 50

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

21 / 50

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

22 / 50

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

23 / 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);

24 / 50

_______ is LED control byte.

25 / 50

Command register is an _____ bit register

26 / 50

Keyboard uses port ____ as status port.

27 / 50

DSR stands for __________ .

28 / 50

___________ is used to identify cause of interrupt.

29 / 50

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

30 / 50

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

31 / 50

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

32 / 50

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

33 / 50

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

34 / 50

Each paragraph in keep function is ____ bytes in size.

35 / 50

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

36 / 50

REGS is a Union

37 / 50

Hardware Interrupts are __________.

38 / 50

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

39 / 50

__________is used to control the printer via the BIOS

40 / 50

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

41 / 50

Keyboard Status Byte is located at the address

42 / 50

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

43 / 50

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

44 / 50

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

45 / 50

Register can be used to divide frequency is _________

46 / 50

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

47 / 50

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

48 / 50

At IRQ 7 Interrupt # ___ is used.

49 / 50

Which port is known as Data Port______

50 / 50

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

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