CS609-Midterm
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Which port is known as Data Port______
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The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
3 / 50
In ____________each byte is needed to be encapsulated in start and end.
4 / 50
A software interrupt does not require EOI (End of interrupt).
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______ is Disk interrupt.
6 / 50
Keyboard uses port ____ as status port.
7 / 50
Maximum number of interrupts in a standard PC is
8 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
9 / 50
DCE stands for __________.
10 / 50
Keyboard Status Byte is located at the address
11 / 50
There are two type of communication synchronous and Anti Synchronous
12 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
13 / 50
The keyboard makes use of interrupt number _______ for its input operations.
14 / 50
The BIOS interrupt ________ can be used to configure RTC.
15 / 50
______ is LED control byte.
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There are two main types of interrupts namely _________________.
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There are two main types of interrupts, namely
18 / 50
Register can be used to divide frequency is _________
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BPB stands for _________.
20 / 50
LPTs can be swapped.
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_____ bit is cleared to indicate the low nibble is being sent.
22 / 50
File system used in CD’s is_______ file system
23 / 50
PPI is used to perform parallel communication
24 / 50
Counter register can be used to divide clock signal.
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Only ________ ports are important from programming point of view.
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UART stands for_______
27 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
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Int 14H __________ can be used to receive a byte.
29 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
30 / 50
In self test mode the output of the UART is routed to its input
31 / 50
Timer interrupt occurs _______ times every second by means of hardware.
32 / 50
The Function of I/O controller is to provide ____________.
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File can be______ viewed as collection of clusters or blocks.
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The interval timer can operate in ____modes.
35 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
36 / 50
The following command “outportb (0x61,inportb(0x61) & 0xFC);” will
37 / 50
Communication between keyboard and keyboard controller is __________.
38 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
39 / 50
By cascading two DMAs ____ bits can be transferred.
40 / 50
Int ________ is used to control the printer via the BIOS.
41 / 50
NMI Stand for
42 / 50
There are __________ kinds of serial communication.
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44 / 50
The interval timer can operate in _______ modes.
45 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
46 / 50
If CPUID instruction is not present then the processor can be a
47 / 50
DSR stands for __________ .
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PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
49 / 50
DTE is ____________.
50 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
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