Mirafra Technologies Interview Questions and Answers

Q1. Explain Angular File structure
Ans. 
Angular file structure organizes code into modules, components, services, and assets.
• Angular projects have a src folder containing app and assets folders

• App folder contains modules, components, services, and other files

• Components have their own folder with HTML, CSS, and TypeScript files

• Services are placed in a separate folder for reusability

• Assets folder stores static files like images and fonts
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Q2. Explain auth guards
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Auth guards are used in software development to control access to certain resources based on user authentication and authorization.
• Auth guards are used in web applications to restrict access to certain routes or resources based on user authentication.

• They are commonly used in frameworks like Angular and Laravel to protect routes from unauthorized access.

• Auth guards can check if a user is authenticated and authorized to...read more
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Q3. Explain Http client module
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Http client module is a module in programming languages that allows communication with HTTP servers.
• Http client module is used to send requests to servers and receive responses.

• It can handle various HTTP methods like GET, POST, PUT, DELETE, etc.

• It can also handle headers, cookies, and other request/response parameters.

• Examples include HttpClient in Java, requests module in Python, axios in JavaScript.
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Q4. Explain Angular life cycle Hook
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Angular life cycle hooks are methods that allow you to tap into specific points in a component's life cycle.
• ngOnChanges: Called when an input property changes

• ngOnInit: Called once the component is initialized

• ngDoCheck: Called during every change detection run

• ngAfterContentInit: Called after content (ng-content) has been projected into the component

• ngAfterContentChecked: Called after every check of the projected content

• ...read more
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Q5. Explain CSS box model
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CSS box model is a fundamental concept in web design that defines the structure and layout of elements on a webpage.
• The box model consists of content, padding, border, and margin.

• Content area is where text or images are displayed.

• Padding is the space between the content and the border.

• Border is the line that surrounds the padding.

• Margin is the space outside the border.

• Each of these components can be styled using CSS pr
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Virtual round for fundamental coding.

Physical round for coding assignment given on a paper.

Q1. How does twisted cable work? How to see CAN voltage levels on Oscilloscope?
Ans. 
Twisted cables reduce electromagnetic interference and CAN voltage levels can be observed using an oscilloscope.
• Twisted cables consist of pairs of wires twisted together to cancel out electromagnetic interference.

• The twisting helps maintain a consistent impedance, reducing signal degradation over distance.

• To see CAN voltage levels, connect the oscilloscope probes to the CAN High and CAN Low lines.

• Set the oscilloscope t...read more
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Q2. Swap the bits in a byte.
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Swapping bits in a byte involves exchanging the positions of bits within an 8-bit binary number.
• A byte consists of 8 bits, indexed from 0 to 7.

• To swap bits, you can exchange pairs: (0, 7), (1, 6), (2, 5), (3, 4).

• Example: For byte 10110010, swapping gives 01011001.

• Use bitwise operations: AND, OR, and XOR to manipulate bits efficiently.

• In programming, you can use masks to isolate and swap bits.
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Q3. Why you want to join the company?
Ans. 
I am excited to join the company for its innovative projects, collaborative culture, and opportunities for professional growth.
• The company's commitment to cutting-edge technology aligns with my passion for innovation, as seen in my previous work on AI-driven applications.

• I admire the collaborative culture here, which fosters teamwork and knowledge sharing, similar to my experience in agile development teams.

• The opportu...read more
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Q4. How soon you can join the company?
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I can join the company in two weeks, allowing time for a smooth transition from my current role.
• I need to provide my current employer with a two-week notice period.

• This timeframe ensures I can wrap up ongoing projects and hand over responsibilities.

• If needed, I can negotiate a quicker start date if my current employer agrees.
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Q1. OOPS concept and All Major pillars with Scanrio-based questions asked on Abstract class and Interface
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Q2. .Net MVC and .Net Core based on program.cs file and Dependency Injection and Middleware in deep
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Q3. Pattern question and check string Palindrome
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Q4. SQL Queries around 4th highest salary of Employee
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Q5. All basic programming concept checking like having prefix and postfix expression problem solving on paper
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Q1. TechnoManagerial Round Collection question to find about number of character present in the word Mirafra with live coding F2F
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Q2. API testing ang REST API Concept
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Q3. Professional Journey
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Q4. Project Details
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Q1. It was a director round but say you need to give again technical round ,they wasted my time and money.
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Q2. SQL Queries on pen and paper
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Q1. What is oops concept example with each one
Ans. 
Object-oriented programming concepts include encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: bundling data and methods that operate on the data into a single unit (class). Example: class Car with properties like make, model, and methods like start(), stop().

• Inheritance: creating new classes based on existing classes, inheriting their attributes and methods. Example: class SUV inheriting from cl...read more
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Q2. What is data structures and types with examples of all types
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Data structures are ways of organizing and storing data in a computer so that it can be accessed and used efficiently.
• Types of data structures include arrays, linked lists, stacks, queues, trees, graphs, and hash tables.

• Arrays are a collection of elements stored in contiguous memory locations, accessed using an index.

• Linked lists are a series of nodes where each node contains data and a reference to the next node.

• Stack...read more
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Q3. What is class and objects with example and code
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A class is a blueprint for creating objects in object-oriented programming. Objects are instances of classes.
• A class defines the properties and behaviors of objects. For example, a 'Car' class may have properties like 'color' and 'model', and behaviors like 'drive' and 'stop'.

• An object is an instance of a class. For example, 'myCar' can be an object of the 'Car' class with specific values for 'color' and 'model'.

• Code e...read more
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Q4. What is virutal function and staic functions
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Virtual functions are functions in a base class that are overridden in derived classes, while static functions belong to the class itself rather than instances.
• Virtual functions allow for dynamic binding and polymorphism in object-oriented programming.

• Static functions are associated with the class itself and can be called without creating an instance of the class.

• Example: virtual void display() = 0; // pure virtual fun...read more
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Q5. What is project u did in present company
Ans. 
Developed a web-based project management tool for tracking tasks and deadlines.
• Used AngularJS for front-end development

• Implemented RESTful APIs for communication between front-end and back-end

• Utilized MySQL database for storing project data
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Write a function over loading and friend class with example?