How many distinct stages are there in DES algorithm, which is parameterized by a 56-bit key?
| A. | 16 |
| B. | 17 |
| C. | 18 |
| D. | 19 |
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Option: A Explanation : Click on Discuss to view users comments. dinesh said: (8:42pm on Monday 19th January 2015)
19 stages are in DES
NamitaJain said: (1:33pm on Monday 20th July 2015)
In other words, DES is a 16-round Feistel cipher having block length 64; it encrypts a plaintext bit-string x (of length 64) using a 56-bit key K, obtaining a ciphertext bit-string ( of length 64 ). The algorithm, which is parameterized by this 56-bit key, has 19 distinct stages.
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The Excess-3 decimal code is a self-complementing code because
| A. | The binary sum of a code and its 9's complement is equal to 9. |
| B. | It is a weighted code. |
| C. | Complement can be generated by inverting each bit pattern. |
| D. | The binary sum of a code and its 10's complement is equal to 9. |
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Option: C Explanation : Click on Discuss to view users comments. Muthu Mariyappan said: (5:00pm on Monday 29th December 2014)
b
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_______ model is designed to bring prices down by increasing the number of customers who buy a particular product at once.
| A. | Economic Order Quantity |
| B. | Inventory |
| C. | Data Mining |
| D. | Demand-Sensitive Pricing |
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Option: D Explanation : Click on Discuss to view users comments. |
The range of representable normalized numbers in the floating point binary fractional representation in a 32-bit word with 1-bit sign, 8-bit excess 128 biased exponent and 23-bit mantissa is
| A. | 2-128 to (1 - 2-23) x 2127 |
| B. | (1 - 2-23) x 2-127 to 2128 |
| C. | (1 - 2-23) x 2-127 to 223 |
| D. | 2-129 to (1 - 2-23) x 2127 |
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Option: D Explanation : Click on Discuss to view users comments. Muthu Mariyappan said: (5:01pm on Monday 29th December 2014)
a
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Debugger is a program that
| A. | allows to examine and modify the contents of registers |
| B. | does not allow execution of a segment of program |
| C. | allows to set breakpoints, execute a segment of program and display contents of register |
| D. | All of the above |
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Option: C Explanation : Click on Discuss to view users comments. |
