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 Hardware Questions

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Q:

What are software interrupts?

Answer

RST0, RST1, RST2, RST3, RST4, RST5, RST6, RST7.

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Q:

Why does microprocessor contain ROM chips?

Answer

Microprocessor contain ROM chip beacause it contain instructions to execute data. It contain the monitor program which not only include execution instruction but also interfacing program

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Q:

What is the name of the law for the storage and use of data in the UK?

Answer

Data Protection Act

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Q:

Give two ways of converting a two input NAND gate to an inverter.

Answer

One way is shorting the two inputs of the NAND gate and passing the input.


truth table:


A B output


1 1 0


0 0 1


The second way is passing the input to only one input (say A) of the NAND gate. Since the other input  (say B is floating, it is always logic one.


Truth table:


A B output


1 1 0 


0 1 1

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Q:

What are the best way to prevent a computer virus from entering your computer?

Answer

1.Logout of your computer each time you have finished using it


2.Install and use anti-virus software on your computer 


3.Do not use emails on your machine


4.Make sure all your files are safely stored to your floppy disks

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Q:

What does GUI stand for?

Answer

 


Graphical User Interface

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Q:

What is object repository?

Answer

Object Repository means not a collection of objects


it's a common repository for all the people (testing, developers) for seeing all the data in single login.


for example QA wants to see 5 testers works then he goes  to each person login and see the data. It's very difficult job. for this we can use Object Repository.

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Q:

Differentiate between RAM & ROM?

Answer

RAM: Read / Write memory, High Speed, Volatile Memory.


ROM: Read only memory, low speed, non volite memory.

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