Hardware Questions

Q:

How do you detect a sequence of "1101" arriving serially from a signal line?

Answer

A SIPO and AND gate circuit can detect this sequence.The output of SIPO is connected to a four input AND gate ,the third SIPO output should be connected through a NOT gate.When the 1101 sequence is loaded in to the SIPO the AND output goes HIGH otherwise keeps LOW.

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Q:

Give an example of one address microprocessor?

Answer

8085 is a one address microprocessor. In 8085 interrupts  are classified by software and hardware interrupts.

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Q:

Which of the following is true of VoIP?

A) It uses the public switched telephone network. B) Skype is an example of VoIP software.
C) It uses a slow speed dial-up connection. D) All of the above
 
Answer & Explanation Answer: B) Skype is an example of VoIP software.

Explanation:

VOIP is an acronym for Voice Over Internet Protocol, or in more common terms phone service over the Internet.

 

Voice over Internet Protocol is a category of hardware and software that enables people to use the Internet as the transmission medium for telephone calls by sending voice data in packets using IP rather than by traditional circuit transmissions of the PSTN.

 

Here in the given options, Skype is the only voice service that enables us to talk over internet.

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Q:

What are level-triggering intertupt?

Answer

RST 6.5 & RST 5.5 are level-triggering interrupts.

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Q:

What are the basic components in a Microprocessor?

Answer

1. Address lines to refer to the address of a block


2. Data lines for data transfer


3. IC chips


4. Processing data

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Q:

Where does CPU Enhanced mode originate from?

Answer

Intel's 80386 was the first 32-bit processor, and since the company had to backward support the 8086. All the modern Intel-based processors run in the Enhanced mode, capable of switching between Real mode (just like the real 8086) and Protected mode, which is the current mode of operation.

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Q:

Where's MBR located on the disk?

Answer

 Main Boot Record is located in sector 0, track 0, head 0, cylinder 0 of the primary active partition.

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Q:

What is a Microprocessor?

Answer

Microprocessor is a program-controlled device, which fetches the instructions from memory. decodes and executes the instructions. Most Micro Processors are single-chip devices.

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