CS609-Midterm
1 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
2 / 50
Operating system name contains ____ bytes in boot block.
3 / 50
Timer interrupt occurs _______ times every second by means of hardware.
4 / 50
There are __________ kinds of serial communication.
5 / 50
In self test mode the output of the UART is routed to its input.
6 / 50
_____ bit is cleared to indicate the low nibble is being sent.
7 / 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);
8 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
9 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
10 / 50
To distinguish 486 with Pentium CPUID Test is used.
11 / 50
Standard PC can have _____ PPI.
12 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
13 / 50
PPI stands for
14 / 50
To store each character in keyboard buffer ____ bytes are required.
15 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
16 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
17 / 50
Keyboard uses port ____ as status port.
18 / 50
Interrupt 9 usually reads the _________ from keyboard.
19 / 50
The interval timer can operate in _______ modes.
20 / 50
Maximum number of interrupts in a standard PC is
21 / 50
22 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
23 / 50
Communication between keyboard and keyboard controller is __________.
24 / 50
Timer interrupt is a _________.
25 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
26 / 50
Standard PC operates in two modes in terms of memory which are
27 / 50
BIOS support _____________UARTS as COM ports.
28 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
29 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
30 / 50
Interrupt service number is usually placed in ____________ register.
31 / 50
PPI is used to perform parallel communication
32 / 50
The BIOS interrupt ________ can be used to configure RTC.
33 / 50
34 / 50
Counter register can be used to divide clock signal.
35 / 50
DCE is _____________
36 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
37 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
38 / 50
The output on the monitor is controlled by a controller called __________within the PC.
39 / 50
Hardware Interrupts are __________.
40 / 50
The interval timer can operate in ____modes.
41 / 50
DTE is ____________.
42 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
43 / 50
Keyboard Status Byte is located at the address
44 / 50
If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
45 / 50
A single interrupt controller can arbitrate among ____ different devices.
46 / 50
The keyboard makes use of interrupt number _______ for its input operations.
47 / 50
File system used in CD’s is_______ file system
48 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
49 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
50 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
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