CS609-Midterm
1 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
2 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
3 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
4 / 50
Keyboard Status Byte is located at the address
5 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
6 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
7 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
8 / 50
The keyboard input character scan code is received at ___ port.
9 / 50
Operating system name contains ____ bytes in boot block.
10 / 50
Interrupt ______ is used to get or set the time.
11 / 50
Standard PC can have _____ PPI.
12 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
13 / 50
DCE stands for __________.
14 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
15 / 50
DSR stands for __________ .
16 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
17 / 50
The keyboard makes use of interrupt number _______ for its input operations.
18 / 50
DTE is ____________.
19 / 50
Keyboard uses port ____ as status port.
20 / 50
There are two main types of interrupts namely _________________.
21 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
22 / 50
______ is Disk interrupt.
23 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
24 / 50
On the execution of IRET instruction, number of bytes popped from stack is
25 / 50
The service _________ is called the keyboard hook service.
26 / 50
The interval timer can operate in _______ modes.
27 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
28 / 50
A single interrupt controller can arbitrate among ____ different devices.
29 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
30 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
31 / 50
Standard PC operates in two modes in terms of memory which are
32 / 50
To distinguish 486 with Pentium CPUID Test is used.
33 / 50
Each paragraph in keep function is ____ bytes in size.
34 / 50
Communication between keyboard and keyboard controller is __________.
35 / 50
NMI Stand for
36 / 50
Which of the following are types of ISR __________.
37 / 50
The output on the monitor is controlled by a controller called __________within the PC.
38 / 50
BIOS DO NOT support ______.
39 / 50
DTE is ___________
40 / 50
DMA stands for_________
41 / 50
42 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
43 / 50
There are __________ kinds of serial communication.
44 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
45 / 50
LPTs can be swapped.
46 / 50
47 / 50
__________is used to control the printer via the BIOS
48 / 50
File system used in CD’s is_______ file system
49 / 50
______ is used to set time.
50 / 50
If keyboard buffer is empty the head and tail points at the same location.
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