Tools for Structured Design.docx

Tools for Structured Design 1. A step-by-step procedure to solve a problem is a(n) a) program b) algorithm c) flowchart d) structured walkthrough Answer: b 2. A collection of related data or facts about a single entity in a file is called a a) data hierarchy b) record c) field d) character Answer: b 3. A single piece of data about a single entity is a a) file b) record c) field d) character Answer: c 4. Which of the following graphics is created to show general information about an application? a) program flowchart b) system flowchart c) control structure d) memory diagram Answer: b 5. Which program flowcharting symbol can be used to indicate the beginning and the end of an algorithm? a) process b) general input/output c) terminal interrupt d) sequence Answer: c 6. Which program flowcharting symbol can be used to represent the statement SUM=GR1+GR2+GR3? a) process b) general input/output c) terminal interrupt d) sequence Answer: a 7. Which program flowcharting symbol can be used to represent the statement WRITE SUM? a) process b) general input/output c) terminal interrupt d) sequence Answer: b 8. A pictorial description of an algorithm is a a) system flowchart b) program flowchart c) memory diagram d) simulation Answer: b 9. A data item whose value may change during processing is a(n) a) defined value b) constant c) input d) variable Answer: d 10. Input can be indicated on a program flowchart by all of the following words except a) READ b) WRITE c) GET d) ENTER Answer: b 11. Which of the following terms is an example of a constant? a) AVERAGE b) 123AVERAGE c) AVERAGE123 d) 123 Answer: d 12. Which of the following choices is not one of the three basic elements of an information processing system? a) input b) processing c) storage d) output Answer: c 13. Which of the following assignment statements is invalid? a) SALES = 1000 b) 1000 = SALES c) SALES = SALES + 1000 d) SALES = SALES1 + SALES2 Answer: b 14. What is the value of the following expression: (9+6*(8-13))/3? a) 25 b) -25 c) 7 d) -7 Answer: d 15. What is the value of the following expression: 2*6+15/3/1+4? a) 21 b) 13 c) 14 d) 18 Answer: a 16. An algorithm can produce an answer in an infinite number of steps. Answer: False 17. The ellipsis symbol is used to indicate the entry and exit points of a program flowchart. Answer: True 18. A system flowchart is also called a logic diagram. Answer: False 19. A program can be described as data independent if it contains no variable names. Answer: False 20. The use of constants helps to ensure that a program is data independent. Answer: False 21. An algorithm must use operations from only a given set of basic operations. Answer: True 22. (90+80+95)/3=AVERAGE is a valid assignment statement, assuming AVERAGE has been defined and assigned a value Answer: False 23. NEWSALES=NEWSALES+OLDSALES is a valid assignment statement, assuming NEWSALES and OLDSALES have been defined and assigned values Answer: True 24. READ 1000, 2000, 3000 is a valid input statement. Answer: False 25. A structured walkthrough is a formal design review. Answer: True 26. The general input/output symbol is used to indicate a specific process in an algorithm. Answer: False 27. The SIMPLE SEQUENCE control structure is the simplest control structure but it is rarely used. Answer: False 28. WRITE NAME, AVERAGE is a valid output statement, assuming NAME and AVERAGE have been defined and assigned values. Answer: True 29. A record is a collection of facts about a single entity. Answer: True 30. In an assignment statement, the value of any variable to the left of the = should not be changed during processing. Answer: False