Hi Problem Solvers.

Why is OSI called Open System? Please give me its brief description like definition? But need solution urgently. Thanks

Hi friends,

What is the difference between Simplex, Half-Duplex and Full-Duplex?

Need Urgent Solution and answer should be detailed.

Regards.

What is the difference between a service-point address, a logical address and a physical address? Thank you.

How CRC code is calculated? What is mean by a common divisor?

I need a very urgent solution. Construct the Hamming Code for the bit sequence 10011101. Thanks.

Calculate the minimum time required to download, two million bytes of information, using each of the following technologies:

1. V. 32 modem
2. V. 32bis modem
3. V. 90 modem
4. Cable Modem

Calculate the total number of bits and then Bit Rate of the Digital signal, given below.

Please give me a proper answer.

Assume, six devices arranged in a mesh topology. How many cables are needed ? How many ports are needed for each device?

 List two advantages and disadvantages, of having international standards for network protocols?

Tell me advantage and disadvantage of international standards 

Explain this.

If one system has a permanent part and a removable part, for example (such as a CD-Rom drive and a CD-Rom). It is important that we make a standardized system, so that different companies can make both the permanent and removable parts and every thing still works together.

Give three examples outside the computer industry, where such international standards exist. Now give three areas outside the computer industry, where they do not exist.