CS609 Midterm Online Quiz

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CS609-Midterm

1 / 50

To distinguish 486 with Pentium CPUID Test is used.

2 / 50

Control information in files is maintained using

3 / 50

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

4 / 50

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

5 / 50

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

6 / 50

The service _________ is called the keyboard hook service.

7 / 50

DCE stands for __________.

8 / 50

________means typematic rate will be sent in next byte.

9 / 50

The interval timer can operate in _______ modes.

10 / 50

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

11 / 50

Operating system name contains ____ bytes in boot block.

12 / 50

There are two main types of interrupts, namely

13 / 50

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

14 / 50

Display device (Monitor) performs _________ I/O.

15 / 50

Communication between keyboard and keyboard controller is __________.

16 / 50

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

17 / 50

_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.

18 / 50

Interrupt 9 usually reads the _________ from keyboard.

19 / 50

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

20 / 50

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

21 / 50

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

22 / 50

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

23 / 50

PPI stands for _____________.

24 / 50

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

25 / 50

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

26 / 50

File system used in CD’s is_______ file system

27 / 50

Only ________ ports are important from programming point of view.

28 / 50

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

29 / 50

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

30 / 50

Keyboard Status Byte is located at the address

31 / 50

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

32 / 50

The interval timer can operate in ____modes.

33 / 50

LPTs can be swapped.

34 / 50

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

35 / 50

File can be______ viewed as collection of clusters or blocks.

36 / 50

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

37 / 50

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

38 / 50

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

39 / 50

The interval timer can operate in ____modes.

40 / 50

Interrupt service number is usually placed in ____________ register.

41 / 50

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

42 / 50

Which port is known as Data Port______

43 / 50

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

44 / 50

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

45 / 50

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

46 / 50

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

47 / 50

PPI stands for

48 / 50

Maximum number of interrupts in a standard PC is

49 / 50

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

50 / 50

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

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