Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Answer question 28 showing fully all the steps. Solution should be perfect(very correct), clear, brief and explicit enough!

A. Always liberate space in the computer memory B. Needs an express liberation of space by the programmer after removal of element from list C. Needs simply that the element be removed from the list D. Needs no pointer manipulation 36. In debugging of a program, A. We are searching for the. availability of errors B. We want to see howa program F. z= fy G. z= xy ()x =Z H 20. interrupt driven input output leads to A. wastage of CPU time B.optimum use of CPU time C. adequate execution of real time processes D. non-execution of priority process 30. The hardware instruction cycle is A. Fetch decode store B. Fetch execute decode C. Decode execute store D. Fetch decode execute store 31. A problem is said to be computable if A. A solution can be found B. The problem is a mathematical problem C. The problem has a feasible mathematical solution D. The problem is a classical computer problem The program counter (PC) A. An index number that in creases every time a loop is executed B. A CPU register that indicates the address of the next instruction in a C. We want to prove that the program is working D. We are correcting errors 37. The following data structures are arranged in decreasing order of preference in terms of search speed A. Linked-list Arrays, Binary-search, Trees B. Binary search, Trees, Linked-list, Arrays C. Binary search, Trees, Array, Linked-list D. Arrays, Linked-list, Binary-search, Trees The function f defined as any kind 32. program C. A CPU register which stores the state of a process D. A CPU register that signals change of context =(u)s 0=u ' O<u *(L-u)ju 33. The search for an element on a binary search tree Has an ayerage complexity whíchjs A. Linear B.Logarithmic Polynomial D.Exponential 34. A binary search tree (BST) is said to be better than binary search in an array because A. The complexity is different B. The BST does not use an index C. The array has a limited size D. The BST uses pointers while an array does not Is said to be A. A recursive function B. A composite function C. An iterative function D.A stack nested function Given the functions for n!, defined as in 38 (NR) above with f(n) and as n%3D1×2×3X......xn (NI) A. NI runs faster than NR for all values of n B.NI takes more memory space than NR C. NI may not execute for certain values of n D. NR has more lines of code than NI 35. Deletion of an element from a linked- 40. A low level programming language list A. Makes more system calls than a high level language
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Transcribed Image Text:A. Always liberate space in the computer memory B. Needs an express liberation of space by the programmer after removal of element from list C. Needs simply that the element be removed from the list D. Needs no pointer manipulation 36. In debugging of a program, A. We are searching for the. availability of errors B. We want to see howa program F. z= fy G. z= xy ()x =Z H 20. interrupt driven input output leads to A. wastage of CPU time B.optimum use of CPU time C. adequate execution of real time processes D. non-execution of priority process 30. The hardware instruction cycle is A. Fetch decode store B. Fetch execute decode C. Decode execute store D. Fetch decode execute store 31. A problem is said to be computable if A. A solution can be found B. The problem is a mathematical problem C. The problem has a feasible mathematical solution D. The problem is a classical computer problem The program counter (PC) A. An index number that in creases every time a loop is executed B. A CPU register that indicates the address of the next instruction in a C. We want to prove that the program is working D. We are correcting errors 37. The following data structures are arranged in decreasing order of preference in terms of search speed A. Linked-list Arrays, Binary-search, Trees B. Binary search, Trees, Linked-list, Arrays C. Binary search, Trees, Array, Linked-list D. Arrays, Linked-list, Binary-search, Trees The function f defined as any kind 32. program C. A CPU register which stores the state of a process D. A CPU register that signals change of context =(u)s 0=u ' O<u *(L-u)ju 33. The search for an element on a binary search tree Has an ayerage complexity whíchjs A. Linear B.Logarithmic Polynomial D.Exponential 34. A binary search tree (BST) is said to be better than binary search in an array because A. The complexity is different B. The BST does not use an index C. The array has a limited size D. The BST uses pointers while an array does not Is said to be A. A recursive function B. A composite function C. An iterative function D.A stack nested function Given the functions for n!, defined as in 38 (NR) above with f(n) and as n%3D1×2×3X......xn (NI) A. NI runs faster than NR for all values of n B.NI takes more memory space than NR C. NI may not execute for certain values of n D. NR has more lines of code than NI 35. Deletion of an element from a linked- 40. A low level programming language list A. Makes more system calls than a high level language
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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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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