CS609-Midterm
1 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
2 / 50
There are two main types of interrupts namely _________________.
3 / 50
On the execution of IRET instruction, number of bytes popped from stack is
4 / 50
The keyboard makes use of interrupt number _______ for its input operations.
5 / 50
------------ is used to read date from RTC
6 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
7 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
8 / 50
Tail of keyboard should get to get the start of buffer.
9 / 50
The service _________ is called the keyboard hook service.
10 / 50
Display device (Monitor) performs _________ I/O.
11 / 50
__________is used to control the printer via the BIOS
12 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
13 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
14 / 50
Timer interrupt is a _________.
15 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
16 / 50
Standard PC operates in two modes in terms of memory which are
17 / 50
In ____________each byte is needed to be encapsulated in start and end.
18 / 50
------------ is used to set time from RTC
19 / 50
The ____________ function simply enables the self test facility within the modem control register
20 / 50
___________ is used to identify cause of interrupt.
21 / 50
To store each character in keyboard buffer ____ bytes are required.
22 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
23 / 50
24 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
25 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
26 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
27 / 50
File system used in CD’s is_______ file system
28 / 50
A single interrupt controller can arbitrate among ____ different devices.
29 / 50
BIOS DO NOT support ______.
30 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
31 / 50
______ is Disk interrupt.
32 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
33 / 50
______ is LED control byte.
34 / 50
PPI is used to perform parallel communication
35 / 50
There are __________ kinds of serial communication.
36 / 50
DSR stands for __________ .
37 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
38 / 50
The ______ service # is not used in any interrupt.
39 / 50
40 / 50
The following command “outportb (0x61,inportb(0x61) & 0xFC);” will
41 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
42 / 50
43 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
44 / 50
_________ is used to identify the cause of interrupt.
45 / 50
NMI Stand for
46 / 50
Register can be used to divide frequency is _________
47 / 50
Software based flow control make use of -------- control characters
48 / 50
Interrupt 9 usually reads the _________ from keyboard.
49 / 50
Communication between keyboard and keyboard controller is __________.
50 / 50
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