Cybage Interview Questions, Process, and Tips for Experienced

Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope.

• Variables declared with var are hoisted to the top of their scope

• Function declarations are hoisted before variables

• Function expressions are not hoisted

• Let and const declarations are not hoisted

Promises are a way to handle asynchronous operations in JavaScript.

• Promises represent a value that may not be available yet.

• They have three states: pending, fulfilled, and rejected.

• Promises can be chained using .then() and .catch() methods.

• They help avoid callback hell and make code more readable.

• Example: new Promise((resolve, reject) => { ... }).then(result => { ... }).catch(error => { ... })

ES6 features are modern JavaScript syntax and features that make code more concise and readable.

• Arrow functions for concise function syntax

• Template literals for easier string interpolation

• Let and const for block-scoped variables

• Destructuring for easily extracting values from objects and arrays

• Spread and rest operators for easily manipulating arrays and objects

• Classes for object-oriented programming

• Modules for better co

Given an array of integers, return the sum of all even numbers.

• Use Array.reduce() method to iterate over the array and sum the even numbers.

• Use the modulo operator (%) to check if a number is even.

DORA process is a framework for measuring and improving software delivery performance.

• DORA stands for DevOps Research and Assessment

• It involves collecting data on key performance indicators (KPIs) related to software delivery

• The data is used to assess the organization's performance and identify areas for improvement

• Examples of KPIs include deployment frequency, lead time for changes, and time to restore service

• The proc...read more

To recover data from a virus-infected HDD, isolate the HDD, scan it with antivirus software, and use data recovery tools if necessary.

• Disconnect the infected HDD from the computer to prevent further spread of the virus

• Connect the HDD to a clean and secure computer as a secondary drive

• Run a thorough antivirus scan on the infected HDD to remove the virus

• If the antivirus scan doesn't recover the data, use data recovery so...read more

Software testing concepts

• Types of testing: unit, integration, system, acceptance

• Testing techniques: black box, white box, grey box

• Test design techniques: equivalence partitioning, boundary value analysis, decision table

• Test management: test planning, test case creation, test execution, defect tracking

• Automation testing: tools like Selenium, Appium, JMeter

• Performance testing: load, stress, endurance testing

• Security test...read more

Priority Severity defines the importance and impact of a defect on the system.

• Priority is the level of urgency to fix a defect, based on its impact on the system.

• Severity is the level of impact a defect has on the system, based on its functionality.

• Examples: High priority and high severity - system crash, Low priority and high severity - spelling mistake in UI

• Priority and severity can be subjective and vary based on th