PCB Apps Interview Questions and Answers

Verbal communicatiom, attention to detail, email writing part

Q1. General question with maths
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Q2. Percentage related sums
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Q1. Interview question with maths
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Q2. Percentage , profit related sums
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Basic aptitude assessment along with some theoretical components.

Q1. Basic questions in Java, SQL and React
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Q1. Project related questions
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Q2. Coding question->Reverse String(World Hello), pattern, prime number
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Q1. What are the different osi layers
Ans. 
The OSI (Open Systems Interconnection) model consists of 7 layers that define the functions of a network communication system.
• Physical Layer: Deals with physical connections and transmission of raw data.

• Data Link Layer: Manages data frames and error detection/correction.

• Network Layer: Handles routing and logical addressing.

• Transport Layer: Ensures end-to-end communication and data flow control.

• Session Layer: Establishe...read more
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Q1. Basic details about yourself
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Q1. What are some ways to avoid deadlock?
Ans. 
Avoid deadlock by implementing proper resource allocation strategies and using techniques like timeouts and resource ordering.
• Implement proper resource allocation strategies to prevent multiple processes from holding resources indefinitely.

• Use timeouts to limit the amount of time a process can wait for a resource before releasing it.

• Follow a strict resource ordering protocol to ensure processes request and release reso...read more
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Q1. How do agile methodologies function in B2B projects?
Ans. 
Agile methodologies in B2B projects involve frequent communication, adaptability, and collaboration with stakeholders.
• Agile methodologies in B2B projects prioritize customer collaboration and responding to change over following a strict plan.

• Regular feedback from stakeholders helps in adjusting project scope and priorities in real-time.

• Cross-functional teams work together closely to deliver incremental value to the B2B...read more
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Q2. What is your experience with barcode scanners?
Ans. 
I have extensive experience working with barcode scanners in various automation projects.
• Implemented barcode scanning functionality in warehouse management system to track inventory

• Integrated barcode scanners with automated testing tools for regression testing

• Utilized barcode scanners in manufacturing processes to improve efficiency and accuracy
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Q1. GMS Integration and Certification
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Q2. Build process, bug fixing and debugging tools
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Q1. Salary expectations
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Q2. Location specific question
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Q1. How to rotate a matrix?
Ans. 
To rotate a matrix, transpose it and then reverse each row or column depending on the direction of rotation.
• Transpose the matrix by swapping elements across the diagonal

• For clockwise rotation, reverse each row of the transposed matrix

• For anti-clockwise rotation, reverse each column of the transposed matrix
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Q2. How to find a particular element in a sorted array?
Ans. 
Use binary search to efficiently find a particular element in a sorted array.
• Start by comparing the target element with the middle element of the array.

• If the target element is less than the middle element, search the left half of the array.

• If the target element is greater than the middle element, search the right half of the array.

• Repeat the process until the target element is found or the search space is empty.
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Q1. What is angular Directives
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Angular Directives are markers on a DOM element that tell AngularJS's HTML compiler to attach a specified behavior to that DOM element.
• Directives are used to create reusable components or custom behaviors in Angular applications.

• They can be used to manipulate the DOM, add event listeners, show/hide elements, etc.

• Examples include ngModel, ngIf, ngFor, etc.
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Q2. How to communicate with components
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Methods to communicate between components in Angular include Input and Output properties, ViewChild, Services, and Event Emitters.
• Using Input and Output properties to pass data from parent to child components and emit events from child to parent components.

• Using ViewChild to access child components from parent components.

• Using Services to create a shared service that can be injected into multiple components to share da...read more
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Q1. Senior Technical Recruitment
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Q2. Documents Required submitted
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Q1. VP round selected
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Q2. Took all rounds
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Q3. Two to three people take interview
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