CS609-Midterm
1 / 50
Hardware Interrupts are __________.
2 / 50
If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
3 / 50
Which of the following are types of ISR __________.
4 / 50
Interrupt _____ is empty; we can use its vector as a flag.
5 / 50
Display device (Monitor) performs _________ I/O.
6 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
7 / 50
The interval timer can operate in ____modes.
8 / 50
The keyboard makes use of interrupt number _______ for its input operations.
9 / 50
Which port is known as Data Port______
10 / 50
By cascading two DMAs ____ bits can be transferred.
11 / 50
______ is Disk interrupt.
12 / 50
To distinguish 486 with Pentium CPUID Test is used.
13 / 50
The keyboard input character scan code is received at ___ port.
14 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
15 / 50
REGS is a Union
16 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
17 / 50
There are __________ kinds of serial communication.
18 / 50
Interrupt service number is usually placed in ____________ register.
19 / 50
PPI is used to perform parallel communication
20 / 50
Control information in files is maintained using
21 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
22 / 50
To store each character in keyboard buffer ____ bytes are required.
23 / 50
------------ is used to set time from RTC
24 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
25 / 50
The Function of I/O controller is to provide ____________.
26 / 50
The BIOS interrupt ________ can be used to configure RTC.
27 / 50
There are two type of communication synchronous and Anti Synchronous
28 / 50
_____ bit is cleared to indicate the low nibble is being sent.
29 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
30 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
31 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
32 / 50
Communication between keyboard and keyboard controller is __________.
33 / 50
DSR stands for __________ .
34 / 50
PPI stands for _____________.
35 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
36 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
37 / 50
The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .
38 / 50
___________ is used to identify cause of interrupt.
39 / 50
On the execution of IRET instruction, number of bytes popped from stack is
40 / 50
The service _________ is called the keyboard hook service.
41 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
42 / 50
Following is not a method of I/O
43 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
44 / 50
PPI stands for
45 / 50
DMA stands for_________
46 / 50
47 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
48 / 50
------------ is used to read date from RTC
49 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
50 / 50
DCE is _____________
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