CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

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

2 / 50

BPB stands for _________.

3 / 50

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

4 / 50

Counter register can be used to divide clock signal.

5 / 50

___________ is used to identify cause of interrupt.

6 / 50

Interrupt 9 usually reads the _________ from keyboard.

7 / 50

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

8 / 50

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

9 / 50

File system used in CD’s is_______ file system

10 / 50

________means typematic rate will be sent in next byte.

11 / 50

Command register is an _____ bit register

12 / 50

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

13 / 50

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

14 / 50

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

15 / 50

The ______ service # is not used in any interrupt.

16 / 50

There are two type of communication synchronous and Anti Synchronous

17 / 50

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

18 / 50

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

19 / 50

The interval timer can operate in ____modes.

20 / 50

Standard PC can have _____ PPI.

21 / 50

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

22 / 50

There are two main types of interrupts namely _________________.

23 / 50

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

24 / 50

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

25 / 50

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

26 / 50

Communication between keyboard and keyboard controller is __________.

27 / 50

______ is used to set time.

28 / 50

Only ________ ports are important from programming point of view.

29 / 50

Keyboard uses port ____ as status port.

30 / 50

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

31 / 50

DCE stands for __________.

32 / 50

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

33 / 50

Int 14H____________ can be used to send a byte

34 / 50

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

35 / 50

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

36 / 50

DSR stands for __________ .

37 / 50

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

38 / 50

Interrupt ______ is used to get or set the time.

39 / 50

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

40 / 50

Timer interrupt is a _________.

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_______ is LED control byte.

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

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Hardware Interrupts are __________.

44 / 50

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

45 / 50

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

46 / 50

A single interrupt controller can arbitrate among ____ different devices.

47 / 50

By cascading two DMAs ____ bits can be transferred.

48 / 50

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

49 / 50

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

50 / 50

Each paragraph in keep function is ____ bytes in size.

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