Trắc nghiệm 300 câu phân tích và thiết kế hệ thống

Partitioning DFDs: a. The process of analyzing a DFD and deriving a series of manual procedures b. Adding controls to ensure the processes are done property c. The process of analyzing a DFD and deriving a series manual procedures and computer programs d. None of these answers Câu 162: Physical data flow diagram: a. describing processes in greater detail b. show sequencing processes in the order they must be executed c. show how the system operates or how the new system will be implemented d. all of these answers Câu 163: Physical DFDs a. show how the system is or...
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Trắc nghiệm 300 câu phân tích và thiết kế hệ thốngTrang 2:Câu 161: Partitioning DFDs:a. The process of analyzing a DFD and deriving a series of manual proceduresb. Adding controls to ensure the processes are done propertyc. The process of analyzing a DFD and deriving a series manual procedures andcomputer programsd. None of these answersCâu 162: Physical data flow diagram:a. describing processes in greater detailb. show sequencing processes in the order they must be executedc. show how the system operates or how the new system will be implementedd. all of these answersCâu 163: Physical DFDsa. show how the system is or will be constructed.b. not concerned about how the system is or will be constructed.c. concerned about how the system is or will be constructed.d. none of these answers.Câu 164: Process names should be in the form:a. verbb. adjectivec. nound. All of these answersCâu 165: Select option(s) not true:a. All of these answers.b. The database community has developed a series of guidelines for ensuring thatdatabases are normalizedc. A database to be in 2NF, it must first fulfill all the criteria of a 1NF databased. Realization is the process of breaking up the data into several tables, so as tominimize the number of times we have to repeat the same dataCâu 166: Select the false statement:a. Requirements engineering is a generic process that does not vary from one softwareproject to another.b. It is relatively common for different customers to propose conflicting requirements,each arguing that his her version is the right one.c. A stakeholder is anyone who will purchase the completed software system underdevelopment.d. None of these answers.Câu 167: Select the error(s) in DFDs:a. Connecting data stores and external entities directly to each other.b. Incorrectly labeling processes and/or data flow.c. Forgetting to include a data flow or pointing an arrowhead in the wrong directiond. All of these answersCâu 168: Select the false statement (about DFDs):a. Data that travel together should be in the same data flowb. Data should be sent only to the processes that need the datac. A data store within a DFD usually needs to have an input data flowd. label a process with an IF-THEN statementCâu 169: Select the true statement:a. System Requirements Analysis can be a challenging phase, because all of the majorCustomers and their interests are brought into the process of determining requirement.(I)b. System Requirements Analysis can’t be a challenging phase, because all of the majorCustomers and their interests are brought into the process of determining requirements.c. The quality of the final product is highly dependent on the effectiveness of therequirements identification process(II)d. (I) and (II)Câu 170: Select the true statement:a. Datastore is used to store datab. None of these answersc. The terms datastore and database are interchangeabled. Database is used to store dataCâu 171: Select the true statement:a. Context diagram contains one process node that generalizes the functiob of theentire system in relationship to external entities.b. Context diagram haven’t process node that generalizes the function to the entire systemin relationship to external entities.c. Context diagram contains two process node that generalizes the function of the entiresystem in relationship to external enties.d. Context diagram contains many process node that generalizes the function of the entiresystem in relationship to external entities.Câu 172: Select the right option(s):a. The notion of database normalization was developed reduce data redundancy asmuch as possible.b. All of these answers.c. There are two goals of the normalization process: eliminating redundant data (forexample, storing the same data in more than one table) and ensuring data dependenciesmake sense?(only storing related data in a table).d. Normalization is the process of efficiently organizing in a database.Câu 173: Select the true statement:a. External entities represent people or organizations outside of the system being studied.b. External entities shows the initial source and final recipient of data and information.c. External entities should be named with a noun, describing that entity.d. All of these answers.Câu 174: Suppose you have a table with fields CAR_ID, CAR_NAME,STICKER_PRICE, QUOTE_PRICE and DEALER, and that the following functionaldependencies exist:CAR_ID -> CAR_NAMECAR_ID -> STICKER_PRICECAR_ID -> DEALERDEALER -> QUOTE_PRICEWhich attribute(s) may be key attributes for a 3NF table?a. CAR_ID and DEALERb. CAR_IDc. CAR_NAME, STICKER_PRICE, and DEALERd. None of the others answersCâu 175: Suppose you have a table with fields A, B, C and D. The functionaldependencies in the table are as follows:A,B -> CA,B -> DD -> Ca. BCNFb. 3 NFc. 2 NFd. 1 NFCâu 176: Suppose you have ...