CS609-Midterm
1 / 50
DCE stands for __________.
2 / 50
DMA stands for_________
3 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
4 / 50
The keyboard makes use of interrupt number _______ for its input operations.
5 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
6 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
7 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
8 / 50
The interval timer can operate in _______ modes.
9 / 50
The Function of I/O controller is to provide ____________.
10 / 50
DTE is ____________.
11 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
12 / 50
13 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
14 / 50
Int ________ is used to control the printer via the BIOS.
15 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
16 / 50
Hardware Interrupts are __________.
17 / 50
BPB stands for _________.
18 / 50
Only ________ ports are important from programming point of view.
19 / 50
------------ is used to read time from RTC
20 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
21 / 50
In self test mode the output of the UART is routed to its input.
22 / 50
If CPUID instruction is not present then the processor can be a
23 / 50
In self test mode the output of the UART is routed to its input
24 / 50
At IRQ 7 Interrupt # ___ is used.
25 / 50
Software based flow control make use of -------- control characters
26 / 50
Operating system name contains ____ bytes in boot block.
27 / 50
The service _________ is called the keyboard hook service.
28 / 50
_____ bit is cleared to indicate the low nibble is being sent.
29 / 50
Keyboard uses port ____ as status port.
30 / 50
Maximum number of interrupts in a standard PC is
31 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
32 / 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);
33 / 50
The output on the monitor is controlled by a controller called __________within the PC.
34 / 50
Interrupt 9 usually reads the _________ from keyboard.
35 / 50
______ is used to set time.
36 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
37 / 50
There are __________ kinds of serial communication.
38 / 50
______ is LED control byte.
39 / 50
If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
40 / 50
There are two main types of interrupts, namely
41 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
42 / 50
------------ is used to set time from RTC
43 / 50
Following is not a method of I/O
44 / 50
The service number is usually placed in the ________ register.
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46 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
47 / 50
File system used in CD’s is_______ file system
48 / 50
UART stands for_______
49 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
50 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
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