CS609-Midterm
1 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
2 / 50
There are two main types of interrupts namely _________________.
3 / 50
Following is not a method of I/O
4 / 50
File system used in CD’s is_______ file system
5 / 50
A software interrupt does not require EOI (End of interrupt).
6 / 50
Standard PC can have _____ PPI.
7 / 50
Operating system name contains ____ bytes in boot block.
8 / 50
Software based flow control make use of -------- control characters
9 / 50
Standard PC operates in two modes in terms of memory which are
10 / 50
_______ is LED control byte.
11 / 50
Only ________ ports are important from programming point of view.
12 / 50
The service number is usually placed in the ________ register.
13 / 50
BIOS DO NOT support ______.
14 / 50
In ____________each byte is needed to be encapsulated in start and end.
15 / 50
Communication between keyboard and keyboard controller is __________.
16 / 50
DMA stands for_________
17 / 50
By cascading two DMAs ____ bits can be transferred.
18 / 50
_____ bit is cleared to indicate the low nibble is being sent.
19 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
20 / 50
At IRQ 7 Interrupt # ___ is used.
21 / 50
File can be______ viewed as collection of clusters or blocks.
22 / 50
Interrupt ______ is used to get or set the time.
23 / 50
Display device (Monitor) performs _________ I/O.
24 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
25 / 50
If keyboard buffer is empty the head and tail points at the same location.
26 / 50
A single interrupt controller can arbitrate among ____ different devices.
27 / 50
The interval timer can operate in ____modes.
28 / 50
DCE stands for __________.
29 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
30 / 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);
31 / 50
Hardware Interrupts are __________.
32 / 50
___________ is used to identify cause of interrupt.
33 / 50
Int 14H __________ can be used to receive a byte.
34 / 50
REGS is a Union
35 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
36 / 50
DTE is ____________.
37 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
38 / 50
In self test mode the output of the UART is routed to its input.
39 / 50
UART stands for_______
40 / 50
41 / 50
The Function of I/O controller is to provide ____________.
42 / 50
43 / 50
DSR stands for __________ .
44 / 50
PPI is used to perform parallel communication
45 / 50
46 / 50
Each paragraph in keep function is ____ bytes in size.
47 / 50
There are two type of communication synchronous and Anti Synchronous
48 / 50
Timer interrupt occurs _______ times every second by means of hardware.
49 / 50
The BIOS interrupt ________ can be used to configure RTC.
50 / 50
Which port is known as Data Port______
Your score is
The average score is 0%
Restart quiz
