CS609-Midterm
1 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
2 / 50
DTE is ____________.
3 / 50
_____ bit is cleared to indicate the low nibble is being sent.
4 / 50
The keyboard makes use of interrupt number _______ for its input operations.
5 / 50
Interrupt ______ is used to get or set the time.
6 / 50
LPTs can be swapped.
7 / 50
A single interrupt controller can arbitrate among ____ different devices.
8 / 50
The service _________ is called the keyboard hook service.
9 / 50
In ____________each byte is needed to be encapsulated in start and end.
10 / 50
REGS is a Union
11 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
12 / 50
Maximum number of interrupts in a standard PC is
13 / 50
If keyboard buffer is empty the head and tail points at the same location.
14 / 50
UART stands for_______
15 / 50
Timer interrupt occurs _______ times every second by means of hardware.
16 / 50
DSR stands for __________ .
17 / 50
BIOS DO NOT support ______.
18 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
19 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
20 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
21 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
22 / 50
The keyboard input character scan code is received at ___ port.
23 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
24 / 50
Int 14H __________ can be used to receive a byte.
25 / 50
Standard PC can have _____ PPI.
26 / 50
DTE is ___________
27 / 50
To store each character in keyboard buffer ____ bytes are required.
28 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
29 / 50
__________is used to control the printer via the BIOS
30 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
31 / 50
The interval timer can operate in _______ modes.
32 / 50
File system used in CD’s is_______ file system
33 / 50
By cascading two DMAs ____ bits can be transferred.
34 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
35 / 50
------------ is used to read time from RTC
36 / 50
On the execution of IRET instruction, number of bytes popped from stack is
37 / 50
DMA stands for_________
38 / 50
There are __________ kinds of serial communication.
39 / 50
Hardware Interrupts are __________.
40 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
41 / 50
Interrupt _____ is empty; we can use its vector as a flag.
42 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
43 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
44 / 50
In self test mode the output of the UART is routed to its input.
45 / 50
The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .
46 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
47 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
48 / 50
A software interrupt does not require EOI (End of interrupt).
49 / 50
DCE stands for __________.
50 / 50
Which of the following are types of ISR __________.
Your score is
The average score is 0%
Restart quiz
