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Answer question 21, 22, 23 showing fully all the steps. Solution should be perfect(very correct), clear, brief and explicit enough!

Answer question 21, 22, 23 showing fully all the steps. Solution should be perfect(very correct), clear, brief and explicit enough!

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Answer question 21, 22, 23 showing fully all the steps. Solution should be perfect(very correct), clear, brief and explicit enough!

D. Radio waves A network interface card(NIC) is found A. In every network end-device (host) B. In the server only C. In the router 21. If memory access takes 20 ns with cache and 110 ns without it, then utility rate of the cache is approximately A. 80% B. 90% C. 82% D. 84% 22. Cache memory acts between A. CPU and RAM B. RAM and ROM 15. D. At the terminal of every transmission_ medium In memory hierarchy, the larger the memory the E. Higher the access time and the higher the speed of transfer of data to CPU F. Higher the access time and the lower the speed of transfer of data to the CPU G. Shorter the access time and the higher the speed of transfer of data to CPU H. Shorter the access time and the lower the speed of transfer of data to CPU 16. C. CPU and Hard Disks D. None of these 23. generally Dynamic RAM is used as main memory computer system as it A. consumes less power B. has higher speed C has lower cell density D. needs refreshing circuitry Logic X-OR operation of (11101010)2& (10101010)2 has as results A. 10010001 B. 01100000 C. 10000000 D. 10000000 (-27)10 can be represented in a signed magnitude format and in a 1's complement format as E. F. G. 17. Floating point representation is used to store A. Boolean values B. Whole number C. Real number D. integers 18. what characteristic of RAM makes it not suitable for permänent storage? A. It is volatile B. Unreliable C. Too slow 111011 & 100100 100100 & 111011 011011 & 100100 100100 & 011011 S8 Н. In computers, subtraction is generally carried out by the hardware using A. 9 complement B. 10's complement 1's complement D 2's complement 20. What characteristic of ROM memory makes it suitable for use in embedded systems? A. Too slow B. It is not programmable C. It keeps information permanently D. It has a high capacity 26. The 2s compliment form (use 6 bit word) of the number 1010 is A. 111100 B. 110110 C. 110111 D. 1011 27. The memory units that communicates directly with the CPU is called the A. Main memory B. Secondary memory C. Shared memory D. Auxiliary memory 28. The equivalence of the Boolean expression: z=X(X+P) is E. z=x(xy) 19.
Transcribed Image Text:D. Radio waves A network interface card(NIC) is found A. In every network end-device (host) B. In the server only C. In the router 21. If memory access takes 20 ns with cache and 110 ns without it, then utility rate of the cache is approximately A. 80% B. 90% C. 82% D. 84% 22. Cache memory acts between A. CPU and RAM B. RAM and ROM 15. D. At the terminal of every transmission_ medium In memory hierarchy, the larger the memory the E. Higher the access time and the higher the speed of transfer of data to CPU F. Higher the access time and the lower the speed of transfer of data to the CPU G. Shorter the access time and the higher the speed of transfer of data to CPU H. Shorter the access time and the lower the speed of transfer of data to CPU 16. C. CPU and Hard Disks D. None of these 23. generally Dynamic RAM is used as main memory computer system as it A. consumes less power B. has higher speed C has lower cell density D. needs refreshing circuitry Logic X-OR operation of (11101010)2& (10101010)2 has as results A. 10010001 B. 01100000 C. 10000000 D. 10000000 (-27)10 can be represented in a signed magnitude format and in a 1's complement format as E. F. G. 17. Floating point representation is used to store A. Boolean values B. Whole number C. Real number D. integers 18. what characteristic of RAM makes it not suitable for permänent storage? A. It is volatile B. Unreliable C. Too slow 111011 & 100100 100100 & 111011 011011 & 100100 100100 & 011011 S8 Н. In computers, subtraction is generally carried out by the hardware using A. 9 complement B. 10's complement 1's complement D 2's complement 20. What characteristic of ROM memory makes it suitable for use in embedded systems? A. Too slow B. It is not programmable C. It keeps information permanently D. It has a high capacity 26. The 2s compliment form (use 6 bit word) of the number 1010 is A. 111100 B. 110110 C. 110111 D. 1011 27. The memory units that communicates directly with the CPU is called the A. Main memory B. Secondary memory C. Shared memory D. Auxiliary memory 28. The equivalence of the Boolean expression: z=X(X+P) is E. z=x(xy) 19.
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