Top 50 Software Engineering Interview Questions and Answers

A computer program is a piece of programming code. It performs a well-defined task. On the other hand, the software includes programming code, documentation and user guide.

It is a process of software development which is done to improve the maintainability of a software system.

The software development is a life cycle is composed of the following stages:

Waterfall Model, Spiral Model, Big-bag model, Iterative Model, and V- Model are some of the famous SDLC models.

Verification is a term that refers to the set of activities which ensure that software implements a specific function.

It refers to the set of activities which ensure that software that has been built according to the need of clients.

Debugging is the process that results in the removal of error. It is very important part of the successful testing.

In the software, development security is always first. So if the execution of the program is slow then, I will try to identify the reason out ways to its time complexity.

There many l ways to keep track of requirements.

A stub is a minimal implementation of an interface which generally returns hardcoded data while mock usually verifies outputs against expectations. Those expectations are set in the test.

Every developer has their views when it comes to the programming language choices. Though, one should prefer high-level languages because they are dynamic. Like C and C++ languages.

Computer software is a package which includes a software program, its documentation, and user guide on how to use the software.

There, is no such ranking, as SDLC Models are adopted as per the need for the development process. It may differ software-to-software.

A software project manager is a person responsible for managing the software development project.

The project manager is doing the project planning, monitoring the progress, communication. He or she also manages risks and resources to deliver the project within time, cost, and quality constraints.

Software scope is a well-defined boundary. It includes all kind of activities that are done to develop and deliver the software product.

The software scope defines all functionalities and artifacts to be delivered as a part of the software. The scope also identifies what the product will do? What is not the part of the project? What is project estimation?

This process is helpful to estimate various aspects of the software product. This estimation can be decided either consulting experts or by using pre-defined formulas.

The size of software product can be calculated using by following two methods

Function points are the features which are provided by the software product. It is considered as a most important measurement for software size.

Most widely used estimation techniques are:

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.

We can measure project execution using Activity Monitoring, Status Reports, and Milestone Checklists.

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.

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.

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.

After, studying all this the final feasibility report is created.

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.

Software Metrics offers measures for various aspects of the software process which are divided into:

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.

Cohesion is a measure that defines the intra-dependability among the elements of the module.

Some of the most important software analysis and designing tools are:

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.

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.

Structured design is a conceptualization of problem. It also called solution design and which is based on ‘divide and conquer’ strategy.

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.

Quality Assurance checks if proper process is followed while developing the software while Quality Control deals with maintaining the quality of software product.

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.

Clean room software engineering method removes defects before software gets into trouble.

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.

I can write tests that define the expected error situations.

A process is instance of the computer program.In a single program it is possible to have one or more threads.

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.

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.

It is a bad idea because:

Script and metadata passed via HTTP headers.

First, you need to design a system by evaluating data structure. Then you should move on to the code structure needed to support it.

Object-oriented design can easily be encapsulated to some degree in component-based design.

Polymorphism is used when there is a need for override functionality when inheriting class. It’s about shared classes and shared contracts.

According to me, the unit testing framework is essential for testing the quality of the code.

According to me, maintenances of software will never be expensive if we are using proper development process.

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.