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Software Engineering Materials-Free Download
16) How to find the size of a software product?
The size of software product can be calculated using by following two methods
• Counting the lines of delivered code
• Counting delivered function points
17) What are function points?
Function points are the features which are provided by the software product. It is considered as a most important measurement for software size.
18) What are software project estimation techniques available?
Most widely used estimation techniques are:
• Decomposition technique
• Empirical technique
19) What is Software configuration management?
Software configuration management is a process of tracking and controlling changes that happen in the software.
Change control is a function which ensures that all changes made into the software system are consistent and created using organizational rules and regulations.
20) How can you measure project execution?
We can measure project execution using Activity Monitoring, Status Reports, and Milestone Checklists.
21) Tell me about some project management tools.
There are many types of management tools used as per the need for a software project. Some of them are Pert Chart, Gantt Chart, Resource Histogram, Status Reports, etc.
22) What are software requirements?
Software requirements are a functional description of a proposed software system. It is assumed to be the description of the target system, its functionalities, and features.
23) What is feasibility study?
It is a measure to find out how practical and beneficial the software project development will prove to the organization. The software analyzer conducts a study to know the economic, technical and operational feasibility of the project.
1. Economic: It includes the cost of training, cost of additional and tools and overall estimation of costs and benefits of the project.
2. Technical: It evaluate technical aspect. Is it possible to develop this system? Assessing the suitability of machine(s) and OS on which software will execute, knowledge of the software development and tools available for this project.
3. Operational: Here the analyst need to assess that the organization will able to adjust smoothly to the changes done as per the demand for the project. Is the problem worth solving at the estimated cost?
After, studying all this the final feasibility report is created.
24) What are functional and non-functional requirements?
Functional requirements are functional features which are expected by users from the proposed software product.
Non-functional requirements are related to security, performance, look, and feel of the user interface.
25) What is software metric?
Software Metrics offers measures for various aspects of software process which are divided into:
1. Requirement metrics: Length requirements, completeness
2. Product metrics: Number of coding Lines, Object-oriented metrics, design and test metrics.
26) What is modularization?
Modularization is a technique which is used for dividing a software system into various discreet modules. That is expected to carry out the tasks independently.
27) What is cohesion?
Cohesion is a measure that defines the intra-dependability among the elements of the module.
28) Mentions some software analysis & design tools?
Some of the most important software analysis and designing tools are:
• Data Flow Diagrams
• Structured Charts
• Structured English
• Data Dictionary
• Hierarchical Input Process Output diagrams
• Entity Relationship Diagrams and Decision tables
29) What is mean by level-0 Data flow diagram?
Highest abstraction level is called Level 0 of DFD. It is also called context level DFD. It portrays the entire information system as one diagram.
30) What is the major difference between structured English and Pseudo Code?
Structured English is native English language. It is used to write the structure of a program module. It uses programming language keywords. On the other hand, Pseudo Code is more like to the programming language without syntax of any specific language.
31) What is structured design?
Structured design is a conceptualization of problem. It also called solution design and which is based on ‘divide and conquer’ strategy.
32) What is functional programming?
It is a programming method, which uses the concepts of a mathematical function. It provides means of computation as mathematical functions, which also produces results irrespective of program state.
33) What is Quality Assurance vs. Quality Control?
Quality Assurance checks if proper process is followed while developing the software while Quality Control deals with maintaining the quality of software product.
34) What are CASE tools?
CASE means Computer Aided Software Engineering. They are set of automated software application programs, which are used to support, enhance and strengthen the SDLC activities.
35) Which process model removes defects before software get into trouble?
Clean room software engineering method removes defects before software gets into trouble.
36) Solve this problem
There are twenty different socks of two types in a drawer in one dark room. What is the minimum number of socks you need to take to ensure you have a matching pair?”
If you pick up three socks, they may be of the same type even if the odds are 50%. Odds never an equal reality. Therefore, the only way to ‘ensure you have a matching pair’ is to pick up at least 11 number of shocks.
37) How you can make sure that your written code which can handle various kinds of error situation?
I can write tests that define the expected error situations.
38) Explain the differences between a Thread and a Process?
A process is instance of the computer program.In a single program it is possible to have one or more threads.
39) Tell me the difference between an EXE and a DLL?
An exe is an executable program while a DLL is a file that can be loaded and executed by programs dynamically. It is an external code repository for programs. As both are different programs, reuse the same DLL instead of having that code in their file. It also reduces required storage space.
40) What is strong-typing and weak-typing? Which is preferred? Why?
Strong typing checks the types of variables at compile time. On the other hand, weak typing checks the types of the system at run-time. Among them, Strong typing is always preferred because it minimizes the bugs.
41) Describe the difference between Interface-oriented, Object-oriented and Aspect-oriented programming.
• Interface programming is contract based.
• Object-oriented is a way to write granular objects which have a single purpose.
• Aspect Oriented Programming is to segregate the code in such a manner that various objects carry the main tasks, and the subsidiary tasks are carried by independent objects.
42) Why using catch (exception) is always a bad idea?
It is a bad idea because:
• As there is no variable defined, it is not possible to read the exception
• It’s good to use an exception when you have known exception types.
43) What type of data is passed via HTTP Headers?
Script and metadata passed via HTTP headers.
44) How do you prioritize requirements?
First, you need to design a system by evaluating data structure. Then you should move on to the code structure needed to support it. 45) Give me differences between object-oriented and component-based design?
Object-oriented design can easily be encapsulated to some degree in component-based design.
46) When do you use polymorphism?
Polymorphism is used when there is a need for override functionality when inheriting class. It’s about shared classes and shared contracts.
47) What is the difference between stack and queue?
• Queue is always First In, First Out
• Stack is always Last In, First Out
48) What is essential for testing the quality of the code?
According to me, the unit testing framework is essential for testing the quality of the code.
49) Do you think that maintenance of software is expensive?
According to me, maintenances of software will never be expensive if we are using proper development process.
50) Give me differences between tags and branches?
Tags are for versioning releases which are temporary holding places for doing such thing. However, branches are deleted when those changes are merged into the trunk.
51) Where is a protected class-level variable available?
Protected class-level variables are available to any sub-class derived from the base class.
52) Is it possible to execute multiple catch blocks for a single try statement?
No. multiple catch blocks can’t be executed with single try statement.
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