Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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1. Draw the digital signal for data stream 11001011 by using the following digital encoding techniques:
a. Differential Manchester
b. NRZ-L
c. NRZ-I
d. Manchester
e. RZ
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- Which encoding scheme performs the best? Why is one of them being utilized at such a high data rate while the other is not?arrow_forward6. For an 8-bit operand, specify the 8-bit mask and the logical operator to perform the following operations. Bit positions are numbered 7-0, left to right. a. Logical Operator: Logical Mask: b. Set all bits to 1. Logical Operator: C. Clear bits 5, 4, 3, and 2 to 0. All other bits remain unchanged. Logical Mask: d. Complement bits 2, 1, and O. All other bits remain unchanged. Logical Operator: Logical Mask: Set bits 7, 6, and 5 to 1. All other bits remain unchanged. Logical Operator: Logical Mask:arrow_forwardPlease answer ASAParrow_forward
- Suppose we have two operands X and Y, where X = 0x34 and Y = 0xAF. (i) Convert X and Y into 8 bit binary. (ii) What is the result of X-Y ? (iii) What is the result of X AND Y? Give your answer in hexadecimal.arrow_forwardSuppose you want to put the six bit value 111111 into a DES S-box. What is the corresponding row of the S-box substitution table? What is the corresponding column? What is the corresponding 4-bit output (in decimal) for S1?arrow_forward2. Consider a IEEE floating format with a 5-bit exponent followed by a 7-bit fraction (ignore the sign bit). Write the following decimal numbers in the given format and in three hexadecimal digits. a. 0.05 b. 9.5arrow_forward
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