CS609-Midterm
1 / 50
There are two main types of interrupts namely _________________.
2 / 50
To distinguish 486 with Pentium CPUID Test is used.
3 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
4 / 50
DSR stands for __________ .
5 / 50
Which of the following are types of ISR __________.
6 / 50
______ is used to set time.
7 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
8 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
9 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
10 / 50
Interrupt service number is usually placed in ____________ register.
11 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
12 / 50
Timer interrupt occurs _______ times every second by means of hardware.
13 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
14 / 50
Int ________ is used to control the printer via the BIOS.
15 / 50
There are __________ kinds of serial communication.
16 / 50
If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
17 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
18 / 50
The output on the monitor is controlled by a controller called __________within the PC.
19 / 50
The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .
20 / 50
Which port is known as Data Port______
21 / 50
Display device (Monitor) performs _________ I/O.
22 / 50
DTE is ___________
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BIOS DO NOT support ______.
24 / 50
Register can be used to divide frequency is _________
25 / 50
The interval timer can operate in ____modes.
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DTE is ____________.
27 / 50
PPI is used to perform parallel communication
28 / 50
Standard PC operates in two modes in terms of memory which are
29 / 50
Following is not a method of I/O
30 / 50
If CPUID instruction is not present then the processor can be a
31 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
32 / 50
_________ is used to identify the cause of interrupt.
33 / 50
The service number is usually placed in the ________ register.
34 / 50
Each paragraph in keep function is ____ bytes in size.
35 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
36 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
37 / 50
Keyboard uses port ____ as status port.
38 / 50
File system used in CD’s is_______ file system
39 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
40 / 50
Interrupt 9 usually reads the _________ from keyboard.
41 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
42 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
43 / 50
Hardware Interrupts are __________.
44 / 50
A software interrupt does not require EOI (End of interrupt).
45 / 50
On the execution of IRET instruction, number of bytes popped from stack is
46 / 50
47 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
48 / 50
To store each character in keyboard buffer ____ bytes are required.
49 / 50
50 / 50
Interrupt _____ is empty; we can use its vector as a flag.
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