Protechsoft Technologies Interview Questions, Process, and Tips

The 'this' operator refers to the object that is currently executing the code.

• The value of 'this' depends on how a function is called.

• In a method, 'this' refers to the object that owns the method.

• In a regular function, 'this' refers to the global object (window in a browser).

• In an event handler, 'this' refers to the element that received the event.

• The value of 'this' can be explicitly set using call(), apply(), or bind

The == operator checks for equality, while the === operator checks for both equality and type.

• The == operator performs type coercion, meaning it converts the operands to a common type before comparison.

• The === operator does not perform type coercion and requires both the value and type to be the same for equality.

• For example, 1 == '1' returns true because the operands are coerced to the same type, but 1 === '1' returns

Navigation serves the purpose of helping users move around a website or application.

• Allows users to easily access different sections of the website

• Helps users understand the structure and hierarchy of the website

• Improves user experience by providing clear and concise directions

• Can include various types of navigation such as menus, breadcrumbs, and search bars

let is block-scoped while var is function-scoped.

• let variables are only accessible within the block they are declared in

• var variables are accessible within the entire function they are declared in

• let variables can be reassigned but not redeclared

• var variables can be both reassigned and redeclared

• let variables are a safer option for avoiding variable hoisting issues

Testing is the process of evaluating a system or component to determine if it meets specified requirements.

• Testing is done to identify defects or errors in software.

• It involves executing a program or system with the intent of finding bugs.

• Testing ensures that the software meets the desired quality standards.

• It includes various techniques like functional testing, performance testing, etc.

• Test cases are designed to cover...read more

Types of testing include functional, performance, security, usability, and compatibility testing.

• Functional testing ensures that the software meets the specified requirements.

• Performance testing checks the system's response time, scalability, and stability under different loads.

• Security testing identifies vulnerabilities and ensures data protection.

• Usability testing evaluates the user-friendliness and ease of use.

• Compa...read more

Severity and priority are terms used in software testing to prioritize and categorize defects.

• Severity refers to the impact of a defect on the system or application under test.

• Priority refers to the order in which defects should be fixed based on business needs.

• Severity is usually categorized as high, medium, or low.

• Priority is usually categorized as high, medium, or low as well.

• Examples: A critical defect causing the ...read more

Smoke testing is a subset of sanity testing. Smoke testing verifies basic functionality, while sanity testing checks for major issues.

• Smoke testing is performed to ensure that the critical functionalities of the software are working fine after a build.

• Sanity testing is performed to check if the major functionalities of the software are working as expected after a minor change or bug fix.

• Smoke testing is a subset of san...read more

SDLC stands for Software Development Life Cycle. It is a process followed to develop software applications.

• SDLC is a structured approach that consists of various phases such as requirements gathering, design, development, testing, deployment, and maintenance.

• It provides a framework for the development team to plan, build, and deliver high-quality software.

• There are different SDLC methodologies like Waterfall, Agile, an...read more

STLC stands for Software Testing Life Cycle. It is a process followed to ensure the quality of a software product.

• STLC is a systematic approach to testing software applications.

• It consists of various phases such as requirement analysis, test planning, test design, test execution, and test closure.

• Each phase has specific objectives and deliverables.

• STLC helps in identifying defects early in the software development life...read more

Bug life cycle is the process of identifying, reporting, fixing, retesting, and closing a software bug.

• Bug is identified by a tester during testing phase

• Bug is reported with detailed information like steps to reproduce, expected and actual results

• Bug is assigned to a developer for fixing

• Developer fixes the bug and marks it as 'Fixed'

• Tester retests the bug to verify if it is resolved

• If the bug is not resolved, it is reo...read more

Agile and waterfall models are two different approaches to software development.

• Agile is an iterative and flexible approach, while waterfall is a sequential and rigid approach.

• Agile focuses on delivering working software in short iterations, while waterfall follows a linear process.

• Agile encourages collaboration and adaptability, while waterfall emphasizes planning and documentation.

• Agile allows for changes and feedbac...read more

Test cases for a login page

• Verify login with valid credentials

• Verify login with invalid credentials

• Verify login with empty username and password fields

• Verify login with only username field filled

• Verify login with only password field filled

• Verify login with special characters in username and password fields

• Verify login with maximum length of username and password fields

• Verify login with minimum length of username and pa