Explore topic-wise MCQs in Computer Science.

This section includes 258 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science knowledge and support exam preparation. Choose a topic below to get started.

201.

Changes made periodically to a system, after its implementation, is known as system

A. analysis
B. design
C. development
D. maintenance
Answer» E.
202.

Tracing, of any input record or process, performed on a system, back to its original source, is an

A. audit trial
B. report generation
C. batch processing
D. conversion
Answer» B. report generation
203.

In processing controls must be established in a system, in order to

A. prohibit tampering with information by unauthorized person
B. Verify that all data have been processed
C. block or trap faulty data from entry into processing
D. All of the above
Answer» E.
204.

The instruction "If it's raining outside, then take an umbrella to work" is an example of the _____ structure,

A. Control
B. Repetition
C. Selection
D. Sequence
Answer» D. Sequence
205.

Which of the following is not a characteristic of structured system development?

A. partitioning of systems into manageable levels of detail
B. specification of the interfaces between modules
C. the use of graphical tools, such as data-flow diagrams, to model system
D. All of the above are characteristics
Answer» E.
206.

Decision tree uses

A. pictorial depictation of alternate conditions
B. nodes and branches
C. consequences of various depicted alternates
D. All of the above
Answer» E.
207.

After planning an algorithm, you should _____ to verify that it will work correctly.

A. Analyze the algorithm
B. Code the algorithm
C. Desk-check the algorithm
D. Evaluate and modify (if necessary) the program.
Answer» C. Desk-check the algorithm
208.

The set of. instructions for how to tie a bow is an example of the _____Structure.

A. Control
B. Repetition
C. Selection
D. Sequence
Answer» E.
209.

In Decision trees

A. nodes represent the conditions, with the right side of tree listing the actions to be taken
B. the root is drawn on the left and is the starting point on the decision sequence.
C. the branch depends on the condition and decisions to made
D. All of the above
Answer» E.
210.

Which of the following is (are) not a tool for Application Prototyping?

A. Application generators
B. third generation language
C. screen generators
D. report generators
Answer» C. screen generators
211.

The rule(s) to follow in constructing decision tables is (are):

A. a decision should be given a name
B. the logic of the table is independent of the sequence in which conditions rules are written, but the action takes place in the order is which the events occur.
C. standardized language must be used consistently.
D. All of the above
Answer» E.
212.

The mistake, committed by interchanging two digits in a numeric held, during data entry, is called

A. transposition error
B. transcription error
C. Beta testing error
D. Alpha testing error
Answer» B. transcription error
213.

Which are the tools not used for System Analysis

A. System - test data
B. Decision table
C. Data Flow Diagram
D. Flowcharts
Answer» B. Decision table
214.

A structure chart is

A. a document of what has to be accomplished
B. a hierarchical partitioning of the program
C. a statement of information processing requirements
D. All of the above
Answer» C. a statement of information processing requirements
215.

The _____ symbol is used in a flowchart to represent a calculation task.

A. Input
B. Output
C. Process
D. Start
Answer» D. Start
216.

Positive testing is

A. running the system with line data by the actual user
B. making sure that the new programs do in fact process certain transactions according to Specifications
C. is checking the logic of one or more programs in the candidate system
D. testing changes made in an existing or a new program
Answer» C. is checking the logic of one or more programs in the candidate system
217.

Which of the following is not a factor in the failure of the systems developments projects?

A. size of the company
B. inadequate user involvement
C. failure of systems integration
D. continuation of a project that should have been cancelled
Answer» B. inadequate user involvement
218.

HIPO

A. is a forms-driven technique in which standard forms are used to document the information
B. consists of a hierarchy chart and an associated set of input/process/ output charts
C. captures the essence of top down decomposition.
D. All of the above
Answer» E.
219.

Which of the following is not considered as a tool at the system design phase?

A. piechart
B. data-flow diagram
C. decision table
D. systems flowchart
Answer» B. data-flow diagram
220.

Data manipulation language (DML)

A. describes how data are structured in the data base
B. specifies for the DBMS what is required; the techniques used to process data
C. determine how data must be structured to produce the user's view
D. All of the above
Answer» C. determine how data must be structured to produce the user's view
221.

Acceptance testing is

A. running the system with line data by the actual user
B. making sure that the new programs do in fact process certain transactions according to Specifications
C. is checking the logic of one or more programs in the candidate systems
D. testing changes made in an existing or a new program
Answer» B. making sure that the new programs do in fact process certain transactions according to Specifications
222.

An audit trial is

A. designed to permit tracing of any input record or process performed on a system, back toits original sources
B. post-auditing the system after its implementation
C. test data used by the system auditor
D. All of the above
Answer» B. post-auditing the system after its implementation
223.

On the feasibility committee, department representatives serve as:

A. direct users of the new system
B. liaison to their departments
C. ready sources of information
D. All of the above
Answer» E.
224.

On the feasibility committee, department representatives serve as

A. ready source of information
B. liason to their departments
C. direct users of the new system
D. both (a) and (c)
Answer» B. liason to their departments
225.

In the system concepts, term Integration

A. implies structure and order
B. refers to the manner in which each component functions with other components of the system.
C. means that parts of the computer system depend on one another.
D. refers to the holism of systems
Answer» E.
226.

In a Decision tree

A. the root is drawn on the left and is the starting point on the decision sequence
B. the branch, to be followed, depends on the conditions and decisions, to be made
C. the nodes represent the conditions, with the right wise of tree listing the actions to be taken
D. All of the above
Answer» E.
227.

A Pseudocode is

A. a machine - level code
B. a random number
C. a flow chart
D. Structured English to communicate the logic of a program
Answer» E.
228.

Benchmarking is used

A. to select computer systems
B. to maintain files in up-to-data condition
C. for application proto-typing
D. for system acceptance
Answer» B. to maintain files in up-to-data condition
229.

Management's decision to rent a computer system may be based upon

A. tax advantages
B. desire to avoid a large one-time payment
C. operational flexibility in changing hardware
D. All of the above
Answer» E.
230.

A common reason for changing an information system is

A. new requirements
B. new technology
C. problems in the existing system
D. All of the above
Answer» E.
231.

Which of the following is the most critical requirement of a Passenger Reservation System?

A. ease of programming
B. response time
C. graphical user Interface
D. printing of tickets
Answer» C. graphical user Interface
232.

The records in a file or magnetic tape

A. can only be accessed serially
B. have to be arranged in a key sequence
C. are meant for backup
D. cannot be transferred to a disk file
Answer» B. have to be arranged in a key sequence
233.

A _____ is an outline of a process that keeps develop successful information systems

A. System Development Life Cycle
B. CASE tool
C. Phased Conversion
D. Success Factors
Answer» B. CASE tool
234.

Which of the following is not a characteristic of good test data

A. users do not participate at this preliminary stage
B. should be comprehensive
C. every statement should be executed
D. All of the above
Answer» B. should be comprehensive
235.

The first step in systems Development Life Cycle is

A. database design
B. system design
C. preliminary investigation and analysis
D. graphical user interface
Answer» D. graphical user interface
236.

A data element in a record, that uniquely distinguishes the record, from all other records, is called

A. response time
B. Key
C. System review
D. test data
Answer» C. System review
237.

System prototyping helps the designer in

A. making the programmers understand how the system will function.
B. communicating to the user, quickly, how the system, when developed, will look like and get a feedback.
C. giving a demo of the software, to the system manager to whom he reports
D. both (a) and (b)
Answer» C. giving a demo of the software, to the system manager to whom he reports
238.

Which of the following represents processor activities, methods, and procedures in a data flow diagram?

A. datagram
B. actigram
C. feed back
D. flow chart
Answer» D. flow chart
239.

Which of the following symbols is (are) not the Data Flow Diagram (DFD):

A. a square
B. an open rectangle
C. a circle
D. a triangle
Answer» E.
240.

To run the old system and the new system at the same time for a specified period, the system implementation approach used is

A. pilot
B. phased
C. parallel
D. direct
Answer» D. direct
241.

In top down analyis and design

A. each succeeding phase is more detailed than the phase before it
B. each succeeding phase is as detailed as the phase before it.
C. each succeeding phase is less detailed than the phase before it
D. aLL of the above
Answer» B. each succeeding phase is as detailed as the phase before it.
242.

Indexed-Sequential organization

A. means storing records in contiguous blocks according to a key.
B. Stores records sequentially but uses an index to locate records
C. uses an index for each key type
D. has records placed randomly throughout the file
Answer» C. uses an index for each key type
243.

The recipe instruction "Beat until smooth' is an example of the _____ structure.

A. Control
B. Repetition
C. Selection
D. Sequence
Answer» C. Selection
244.

Managers who are potential users of the MIS

A. select the optimum equipment configurations
B. evaluate alternate equipment configurations
C. describe information needs
D. All of the above
Answer» E.
245.

Which of the following appropriately explains the desirable characteristic of good system design?

A. Modular approach
B. Proper documentation
C. Conversion
D. Long discussions
Answer» B. Proper documentation
246.

Requirements also serve as an evaluation checklist at the end of the development project, so they are sometimes called _____.

A. System Development Life Cycle
B. CASE tool
C. Phased Conversion
D. Success factors
Answer» E.
247.

The step-by-step instructions that solve a problem are called _____.

A. An algorithm
B. A list
C. A plan
D. A sequential structure
Answer» B. A list
248.

The starting point for development of an MIS is;

A. identification of business processes that are the essence of the business
B. a distributed database management
C. the system has a large number of PCs and a LAN.
D. purchase of a mini computers
Answer» B. a distributed database management
249.

In a _____ one module of the new information system is activates at a time.

A. System Development Life Cycle
B. CASE tool
C. Phased Conversion
D. Success factors
Answer» D. Success factors
250.

Which of the following statements, is (are) not true for the lease option

A. Lease charges are lower than rental charges for the same period and are also tax deductable.
B. Lease may be written to show higher payments is early years to reflect the decline in value of the system
C. Insurance, maintenance and other expenses are included in the rental charge
D. All of the above
Answer» D. All of the above