Quest Global Senior Verification & Validation Engineer Interview Questions and Answers

USB 3.0 is faster than USB 2.0 and has improved power management capabilities.

• USB 2.0 has a maximum data transfer rate of 480 Mbps, while USB 3.0 has a maximum data transfer rate of 5 Gbps.

• USB 3.0 is backward compatible with USB 2.0 devices, but USB 2.0 is not forward compatible with USB 3.0 devices.

• USB 3.0 provides better power management, allowing devices to draw more power without exceeding the limit.

• USB 3.0 ports a...read more

Software testing life cycle is a process of planning, designing, executing, and reporting on tests throughout the software development lifecycle.

• 1. Requirement Analysis: Understanding the requirements and creating test cases.

• 2. Test Planning: Defining the test strategy, scope, resources, and schedule.

• 3. Test Design: Creating detailed test cases based on requirements.

• 4. Test Execution: Running the test cases and reporti...read more

Waterfall is a linear sequential approach to software development, while Agile is an iterative and incremental approach.

• Waterfall follows a sequential process, with each phase completed before moving on to the next.

• Agile involves breaking the project into small increments and delivering them in short iterations.

• Waterfall is more rigid and requires detailed planning upfront, while Agile is more flexible and adaptable to...read more

Software testing life cycle involves planning, designing, executing, and reporting on tests to ensure software quality.

• STLC is a process that starts with test planning and ends with test closure.

• It includes test design, test execution, and test reporting.

• STLC is iterative and involves continuous improvement.

• Examples of STLC models include Waterfall, Agile, and DevOps.

Bug is a defect in software, error is a mistake made by a programmer, black box testing is testing without knowledge of internal code.

• Bug: a flaw in software that causes it to behave unexpectedly or incorrectly

• Error: a mistake made by a programmer that results in incorrect code

• Black box testing: testing without knowledge of the internal code, focusing on inputs and outputs

• Example: entering invalid data into a form and ...read more

The BIOS (Basic Input/Output System) is a firmware that initializes hardware during booting process.

• BIOS is responsible for performing a Power-On Self Test (POST) to check hardware components.

• It then loads the bootloader from the boot device specified in the BIOS settings.

• The bootloader then loads the operating system into memory and hands over control to it.

• The booting process can be customized by changing BIOS settin...read more

Different versions of Windows operating system

• Different versions of Windows have different features and capabilities

• Windows 10 has a more modern interface and better security features than Windows 7

• Windows 8 introduced touch screen support and a new start screen

• Windows XP is no longer supported by Microsoft and is vulnerable to security threats