10+ Fitiq Interview Questions and Answers

Answering how to write rest API in Flask, indexing in SQL, and exception handling in Flask.

• To write a REST API in Flask, you need to define routes using the @app.route decorator and return JSON responses using the jsonify method.

• To index in SQL, you can use the CREATE INDEX statement to create an index on a table column to improve query performance.

• To handle exceptions in Flask, you can use the @app.errorhandler decorator to define custom error handlers for different HTTP err...read more

JDK 8 introduced lambda expressions, streams, and default methods. JDK 11 included features like local-variable syntax for lambda parameters and HTTP client API.

• JDK 8: Lambda expressions allow functional programming, streams for processing collections, default methods in interfaces.

• JDK 11: Local-variable syntax for lambda parameters, HTTP client API for making HTTP requests.

• JDK 8: Example - Lambda expression: (int a, int b) -> a + b

• JDK 11: Example - HTTP client API: HttpClien...read more

Iterator is an object that allows iteration over a collection, while Iterables are objects that can be iterated over.

• Iterator is used to iterate over elements in a collection, while Iterables are objects that can be iterated over using an Iterator.

• Iterables implement the Iterable interface, which allows them to be used in for-each loops in Java.

• Iterator has methods like hasNext() and next() to iterate over elements, while Iterables provide a way to obtain an Iterator.

• Example:...read more

Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.

• Objects are instances of classes, which define the structure and behavior of the objects.

• Encapsulation, inheritance, and polymorphism are key principles of object oriented programming.

• Example: In a banking system, a 'BankAccount' class can define attributes like account number and balance, and methods like deposit and withdraw.

Dependency Injection is a design pattern where components are given their dependencies rather than creating them internally.

• Dependency Injection helps in achieving loose coupling between classes.

• It allows for easier testing by providing a way to mock dependencies.

• There are three types of Dependency Injection - Constructor Injection, Setter Injection, and Interface Injection.

Data structures are used in real life scenarios to organize and manage data efficiently.

• Storing student records in a database using a linked list

• Implementing a queue system for a hospital's emergency room

• Using a hash table to store employee information in a company database

Closures are functions that have access to variables from their containing scope even after the scope has closed.

• Closures allow functions to maintain access to variables from their parent scope even after the parent function has finished executing.

• Closures are created when a function is defined within another function and the inner function references variables from the outer function.

• Closures are commonly used in event handlers, callbacks, and asynchronous programming to mai...read more

Functional interfaces are interfaces with only one abstract method, used in Java for lambda expressions.

• Functional interfaces can have multiple default or static methods, but only one abstract method.

• They are used in Java to enable lambda expressions and method references.

• Examples of functional interfaces in Java include Runnable, Callable, and Comparator.

JVM stands for Java Virtual Machine, which is an abstract computing machine that enables a computer to run Java programs.

• JVM is responsible for converting Java bytecode into machine code that can be executed by the computer's hardware.

• It provides a platform-independent execution environment for Java programs.

• JVM manages memory, handles garbage collection, and provides security features for Java applications.

• Examples of JVM implementations include Oracle HotSpot, OpenJ9, and G...read more

Containers are a lightweight, portable, and isolated runtime environment for applications, while Pods are a group of one or more containers sharing the same network and storage.

• Containers are individual units that package an application and its dependencies, while Pods are a higher-level concept that can contain multiple containers.

• Containers are isolated from each other, while containers within a Pod share the same network namespace and can communicate with each other using ...read more

CIDC stands for Clinical Immunization Data Collective and is a platform for sharing immunization data.

• CIDC is a collaborative effort among healthcare organizations to share immunization data for research and public health purposes.

• It allows researchers to access de-identified immunization data to study vaccine effectiveness, safety, and coverage.

• CIDC helps in monitoring immunization rates, identifying gaps in coverage, and improving vaccination strategies.

• Examples of data sha...read more

Async/await is a feature in JavaScript that allows for asynchronous programming using promises.

• Async/await is a syntactic sugar built on top of promises in JavaScript.

• It allows for writing asynchronous code that looks synchronous, making it easier to read and maintain.

• The 'async' keyword is used to define a function as asynchronous, while 'await' is used to pause the execution of the function until a promise is settled.

• Example: async function fetchData() { await fetch('https:...read more

DevOps is a software development methodology that combines software development (Dev) with IT operations (Ops) to shorten the systems development life cycle.

• DevOps focuses on collaboration, automation, and monitoring throughout the software development lifecycle.

• It aims to increase the speed of software delivery, improve reliability, and build scalable systems.

• Tools commonly used in DevOps include Docker, Jenkins, Ansible, and Kubernetes.