A context diagram is used A) as the first step in developing a detailed DFD of a system B) in systems analysis of very complex systems C) as an aid to system design D) as an aid to programmer

A context diagram is used  
A) as the first step in developing a detailed DFD of a system
B) in systems analysis of very complex systems
C) as an aid to system design
D) as an aid to programmer
by

1 Answer

Answer :

A) as the first step in developing a detailed DFD of a system
by

Related questions

A context diagram A) Describes the context of a system B) is a DFD which gives an overview of the system C) is a detailed description of a system D) is not used in drawing a detailed DFD

Description : A context diagram A) Describes the context of a system B) is a DFD which gives an overview of the system C) is a detailed description of a system D) is not used in drawing a detailed DFD

Last Answer : B) is a DFD which gives an overview of the system

DFD stands for A) Data Flow Document B) Data File Diagram C) Data Flow Diagram D) Non of the above

Description : DFD stands for A) Data Flow Document B) Data File Diagram C) Data Flow Diagram D) Non of the above

Last Answer : C) Data Flow Diagram

A DFD is normally leveled as A) It is a good idea in design B) It is recommended by many experts C) it is easy to do it D) It is easier to read and understand a number of smaller DFDs than one large DFD

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Last Answer : D) It is easier to read and understand a number of smaller DFDs than one large DFD

By an external entity we mean a A) Unit outside the system being designed which can be controlled by an analyst. B) Unit outside the system whose behavior is independent of the system being designed C) A unit external to the system being designed D) A unit which is not part of a DFD

Description : By an external entity we mean a A) Unit outside the system being designed which can be controlled by an analyst. B) Unit outside the system whose behavior is independent of the system being designed C) A unit external to the system being designed D) A unit which is not part of a DFD

Last Answer : C) A unit external to the system being designed

Data cannot flow between two data stores because A) it is not allowed in DFD B) a data store is a passive repository of data C) data can get corrupted D) they will get merged

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Last Answer : D) they will get merged

Data store in a DFD represents. A) a sequential file B) a disk store C) a repository of data

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A rectangle in a DFD represents A) a process B) a data store C) an external entity D) an input unit

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Last Answer : C) an external entity

In a DFD external entities are represented by a A) Rectangle B) Ellipse C) Diamond shaped box D) Circle

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Last Answer : A) Rectangle

Consider the following statements related to compiler construction: I. Lexical Analysis is specified by context-free grammars and implemented by pushdown automata. II. Syntax Analysis is specified by regular expressions and implemented by finite-state machine. Which of the above statement(s) is/are correct? (1) Only l (2) Only ll (3) Both I and II (4) Neither I nor Il

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Last Answer : Answer: 4

Which statement best describes the emphasis of the systems and substantive approaches in the audit plan? a. A thoroughly designed systems approach to auditing can eliminate the need for any substantive procedures. b. The systems approach focuses on detailed testing of specific accounts for accuracy, while the substantive approach is the testing controls to make sure they are effective. c. The systems approach focuses on testing controls to make sure they are effective, while the substantive approach is the detailed testing of specific accounts for accuracy. d. The systems approach focuses on the use of computer systems to aid in the audit while the substantive approach focuses on more manual tests

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Last Answer : The systems approach focuses on testing controls to make sure they are effective, while the substantive approach is the detailed testing of specific accounts for accuracy

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Last Answer : A) 1-true, 2-true

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Last Answer : A) Problem definition

State True or False. i) Master Development Plan basically is a schedule of various applications to be comprised. ii) It consists of start and finish dates of a system analysis, design implementation and maintenance activities. A) i-True, ii-True B) i-False, ii-True C) i-True, ii-False D) i-False, ii-False

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Which of the factors listed below is not a reason for decision making in organizations being a complex process? (a) People have to make decisions in a historical context (b) Several stakeholders will have an interest in the decision (c) Modern information systems enable people to evaluate a range of possible outcomes (d) Factors in the current context of the organization affect the decision

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Last Answer : (c) Modern information systems enable people to evaluate a range of possible outcomes 

Which step in developing new products involves determining whether the product idea is compatible with company objectives, needs, and resources on a general level ? 1. Product Development 2. Screening 3. Idea Generation 4. Business Analysis 5. None of these

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Description : A software project was estimated at 352 Function Points (FP). A four person team will be assigned to this project consisting of an architect, two programmers, and a tester. The salary of the architect is Rs.80,000 per month, the ... ) Rs.28,16,000 (2) Rs.20,90,000 (3) Rs.26,95,000 (4) Rs.27,50,000

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Consider three CPU intensive processes P1, P2, P3 which require 20, 10 and 30 units of time, arrive at times 1, 3 and 7 respectively. Suppose operating system is implementing Shortest Remaining Time first (preemptive scheduling) algorithm, then .............. context switches are required (suppose context switch at the beginning of Ready queue and at the end of Ready queue are not counted). (A) 3 (B) 2 (C) 4 (D) 5

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Last Answer : (A) 3

The full form of DDL is (A Dynamic Data Language (B) Detailed Data Language (C) Data Definition Language (D) Data Derivation Language

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A programmer is writing a system that is intended to be able to store large amounts of personal data. As the programmer develops the data system, which of the following is LEAST likely to impact the programmer’s choices in designing the structure of the system? A. Maintaining privacy of the information stored in the data set. B. Scalability of the system. C. Structuring the metadata of the information for analysis. D. The frequency of a particular item occurring in a data set.

Description : A programmer is writing a system that is intended to be able to store large amounts of personal data. As the programmer develops the data system, which of the following is LEAST likely to impact the ... of the information for analysis. D. The frequency of a particular item occurring in a data set.

Last Answer : D. The frequency of a particular item occurring in a data set.

………….. Phase is a time consuming phase and yet a very crucial phase A) Feasibility Study B) Requirement Phase C) Analysis Phase D) Testing Phase

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Which of the following statement is NOT true? (a) Most of the plant tissues are supportive type. (b) Tissues ensure division of labour. (c) Sedantry existence contribute to the organ system design in animals. (d) Organ systems are far more complex in animals than in plants.

Description : Which of the following statement is NOT true? (a) Most of the plant tissues are supportive type. (b) Tissues ensure division of labour. (c) Sedantry existence contribute to the organ system design in animals. (d) Organ systems are far more complex in animals than in plants.

Last Answer : (c) Sedantry existence contribute to the organ system design in animals.

The statements s1 and s2 are given as: s1: Context sensitive languages are closed under intersection, concatenation, substitution and inverse homomorphism. s2: Context free languages are closed under complementation, substitution and homomorphism. Which of the following is correct statement? (A) Both s1 and s2 are correct. (B) s1 is correct and s2 is not correct. (C) s1 is not correct and s2 is correct. (D) Both s1 and s2 are not correct.

Description : The statements s1 and s2 are given as: s1: Context sensitive languages are closed under intersection, concatenation, substitution and inverse homomorphism. s2: Context free languages are closed under complementation, ... is not correct and s2 is correct. (D) Both s1 and s2 are not correct.

Last Answer : (B) s1 is correct and s2 is not correct.

For every context free grammar (G) there exists an algorithm that passes any w ∈ L(G) in number of steps proportional to (A) ln|w| (B) |w| (C) |w|2 (D) |w|3

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Last Answer : (D) |w|3

Given the following statements: S1: Every context-sensitive language L is recursive. S2: There exists a recursive language that is not context sensitive. Which statement is correct? (A) S1 is not correct and S2 is not correct. (B) S1 is not correct and S2 is correct. (C) S1 is correct and S2 is not correct. (D) S1 is correct and S2 is correct.

Description : Given the following statements: S1: Every context-sensitive language L is recursive. S2: There exists a recursive language that is not context sensitive. Which statement is correct? (A) S1 is not correct and S2 is ... (C) S1 is correct and S2 is not correct. (D) S1 is correct and S2 is correct.

Last Answer : (D) S1 is correct and S2 is correct. 

High level knowledge which relates to the use of sentences in different contexts and how the context affect the meaning of the sentences? (A) Morphological (B) Syntactic (C) Semantic (D) Pragmatic

Description : High level knowledge which relates to the use of sentences in different contexts and how the context affect the meaning of the sentences? (A) Morphological (B) Syntactic (C) Semantic (D) Pragmatic

Last Answer : (D) Pragmatic

The context free grammar for the language L = {an bm | n≤m+3, n≥0, m≥0} is (A) S→aaaA; A→aAb|B, B→Bb|λ (B) S→aaaA|λ, A→aAb|B, B→Bb|λ (C) S→aaaA|aaA|λ, A→aAb|B, B→Bb|λ (D) S→aaaA|aaA|aA|λ, A→aAb|B, B→Bb|λ

Description : The context free grammar for the language L = {an bm | n≤m+3, n≥0, m≥0} is (A) S→aaaA; A→aAb|B, B→Bb|λ (B) S→aaaA|λ, A→aAb|B, B→Bb|λ (C) S→aaaA|aaA|λ, A→aAb|B, B→Bb|λ (D) S→aaaA|aaA|aA|λ, A→aAb|B, B→Bb|λ

Last Answer : (D) S→aaaA|aaA|aA|λ, A→aAb|B, B→Bb|λ

Given the following statements : S1 : SLR uses follow information to guide reductions. In case of LR and LALR parsers, the look-aheads are associated with the items and they make use of the left context available to the parser. S2 : LR grammar is a larger sub-class of context free grammar as compared to that SLR and LALR grammars. Which of the following is true ? (A) S1 is not correct and S2 is not correct. (B) S1 is not correct and S2 is correct. (C) S1 is correct and S2 is not correct. (D) S1 is correct and S2 is correct.

Description : Given the following statements : S1 : SLR uses follow information to guide reductions. In case of LR and LALR parsers, the look-aheads are associated with the items and they make use of the left context available to ... (C) S1 is correct and S2 is not correct. (D) S1 is correct and S2 is correct.

Last Answer : (D) S1 is correct and S2 is correct.

A context free grammar for L={w|n0(w)>n1(w)} is given by: (A) S→0|0S|1SS (B) S→0S|1S|0SS|1SS|0|1 (C) S→0|0S|1SS|S1S|SS1 (D) S→0S|1S|0|1

Description : A context free grammar for L={w|n0(w)>n1(w)} is given by: (A) S→0|0S|1SS (B) S→0S|1S|0SS|1SS|0|1 (C) S→0|0S|1SS|S1S|SS1 (D) S→0S|1S|0|1

Last Answer : (C) S→0|0S|1SS|S1S|SS1 

If all the production rules have single non - terminal symbol on the left side, the grammar defined is : (A) context free grammar (B) context sensitive grammar (C) unrestricted grammar (D) phrase grammar

Description : If all the production rules have single non - terminal symbol on the left side, the grammar defined is : (A) context free grammar (B) context sensitive grammar (C) unrestricted grammar (D) phrase grammar

Last Answer : (A) context free grammar

The language of all non-null strings of a’s can be defined by a context free grammar as follow : S→a S|S a| a The word a3 can be generated by ................ different trees. (A) Two (B) Three (C) Four (D) Five

Description : The language of all non-null strings of a’s can be defined by a context free grammar as follow : S→a S|S a| a The word a3 can be generated by ................ different trees. (A) Two (B) Three (C) Four (D) Five

Last Answer : (C) Four Explanation:

The family of context sensitive languages is ................. under union and ................. under reversal. (A) closed, not closed (B) not closed, not closed (C) closed, closed (D) not closed, closed

Description : The family of context sensitive languages is ................. under union and ................. under reversal. (A) closed, not closed (B) not closed, not closed (C) closed, closed (D) not closed, closed

Last Answer : (C) closed, closed 

Which of the following statements is false? (1) Every context-sensitive language is recursive. (2) The set of all languages that are not recursively enumerable is countable. (3) The family of recursively enumerable languages is closed under union. (4) The families of recursively enumerable and recursive languages are closed under reversal.

Description : Which of the following statements is false? (1) Every context-sensitive language is recursive. (2) The set of all languages that are not recursively enumerable is countable. (3) The family ... under union. (4) The families of recursively enumerable and recursive languages are closed under reversal.

Last Answer : The set of all languages that are not recursively enumerable is countable.

Given the following two statements: A. L = {w|na(w) = nb(w)} is deterministic context free language, but not linear B. L = {an bn} U {an b2n} is linear, but not deterministic context free language. Which of the following options is correct? (1) Both (A) and (B) are false. (2) Both (A) and (B) are true. (3) (A) is true, (B) is false. (4) (A) is false, (B) is true.

Description : Given the following two statements: A. L = {w|na(w) = nb(w)} is deterministic context free language, but not linear B. L = {an bn} U {an b2n} is linear, but not deterministic context free language. Which of the following ... are true. (3) (A) is true, (B) is false. (4) (A) is false, (B) is true.

Last Answer : Both (A) and (B) are true. 

Given the following two languages: L1 = {anbn|n≥0, n≠100} L2 = {w ϵ {a,b,c}*| na(w) = nb(w) = nc(w)} Which of the following options is correct? (1) Both L1 and L2 are not context free language. (2) Both L1 and L2 are context free language. (3) L1 is context free language, L2 is not context free language. (4) L1 is not context free language, L2 is context free language.

Description : Given the following two languages: L1 = {anbn|n≥0, n≠100} L2 = {w ϵ {a,b,c}*| na(w) = nb(w) = nc(w)} Which of the following options is correct? (1) Both L1 and L2 are ... context free language, L2 is not context free language. (4) L1 is not context free language, L2 is context free language.

Last Answer : L1 is context free language, L2 is not context free language.

Personnel who design, program, operates and maintains computer equipment refers to A) Console-operator B) Programmer C) Peopleware D) System Analyst

Description : Personnel who design, program, operates and maintains computer equipment refers to A) Console-operator B) Programmer C) Peopleware D) System Analyst

Last Answer : Answer : C