CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

Following is not a method of I/O

2 / 50

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

3 / 50

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

4 / 50

File can be______ viewed as collection of clusters or blocks.

5 / 50

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

6 / 50

Control information in files is maintained using

7 / 50

Interrupt ______ is used to get or set the time.

8 / 50

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

9 / 50

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

10 / 50

Counter register can be used to divide clock signal.

11 / 50

____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.

12 / 50

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

13 / 50

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

14 / 50

At IRQ 7 Interrupt # ___ is used.

15 / 50

The interval timer can operate in ____modes.

16 / 50

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

17 / 50

By cascading two DMAs ____ bits can be transferred.

18 / 50

Register can be used to divide frequency is _________

19 / 50

BIOS support _____________UARTS as COM ports.

20 / 50

PPI is used to perform parallel communication

21 / 50

DSR stands for __________ .

22 / 50

Only ________ ports are important from programming point of view.

23 / 50

Standard PC can have _____ PPI.

24 / 50

------------ is used to read time from RTC

25 / 50

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

26 / 50

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

27 / 50

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

28 / 50

There are two main types of interrupts, namely

29 / 50

_______ is LED control byte.

30 / 50

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

31 / 50

The amount of memory above conventional memory (extended memory) can be determined using the service _______.

32 / 50

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

33 / 50

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

34 / 50

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

35 / 50

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

36 / 50

The BIOS interrupt ________ can be used to configure RTC.

37 / 50

__________is used to control the printer via the BIOS

38 / 50

LPTs can be swapped.

39 / 50

A single interrupt controller can arbitrate among ____ different devices.

40 / 50

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

41 / 50

Interrupt 9 usually reads the _________ from keyboard.

42 / 50

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

43 / 50

Display device (Monitor) performs _________ I/O.

44 / 50

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

45 / 50

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

46 / 50

Hardware Interrupts are __________.

47 / 50

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

48 / 50

Communication between keyboard and keyboard controller is __________.

49 / 50

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

50 / 50

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

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