CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

BPB stands for _________.

2 / 50

Following is not a method of I/O

3 / 50

There are __________ kinds of serial communication.

4 / 50

There are two main types of interrupts namely _________________.

5 / 50

______ is Disk interrupt.

6 / 50

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

7 / 50

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

8 / 50

Command register is an _____ bit register

9 / 50

By cascading two DMAs ____ bits can be transferred.

10 / 50

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

11 / 50

DSR stands for __________ .

12 / 50

Maximum number of interrupts in a standard PC is

13 / 50

Interrupt ______ is used to get or set the time.

14 / 50

To distinguish 486 with Pentium CPUID Test is used.

15 / 50

BIOS support _____________UARTS as COM ports.

16 / 50

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

17 / 50

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

18 / 50

PPI stands for

19 / 50

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

20 / 50

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

21 / 50

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

22 / 50

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

23 / 50

The interval timer can operate in _______ modes.

24 / 50

Hardware Interrupts are __________.

25 / 50

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

26 / 50

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

27 / 50

There are two main types of interrupts, namely

28 / 50

LPTs can be swapped.

29 / 50

The service number is usually placed in the ________ register.

30 / 50

DTE is ____________.

31 / 50

By cascading two DMAs ____ bits can be transferred.

32 / 50

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

33 / 50

Display device (Monitor) performs _________ I/O.

34 / 50

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

35 / 50

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

36 / 50

The BIOS interrupt ________ can be used to configure RTC.

37 / 50

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

38 / 50

Counter register can be used to divide clock signal.

39 / 50

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

40 / 50

A single interrupt controller can arbitrate among ____ different devices.

41 / 50

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

42 / 50

Interrupt service number is usually placed in ____________ register.

43 / 50

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

44 / 50

In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.

45 / 50

If CPUID instruction is not present then the processor can be a

46 / 50

Int 14H____________ can be used to send a byte

47 / 50

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

48 / 50

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

49 / 50

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

50 / 50

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

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