HCLTech Interview Questions, Process, and Tips

Q1. Different between fetch and axios
Ans. 
Fetch is a built-in web API in JavaScript for making HTTP requests, while Axios is a popular third-party library for the same purpose.
• Fetch is built into the browser, while Axios is a standalone library.

• Axios has built-in support for handling request and response interceptors.

• Fetch uses Promises for handling responses, while Axios uses Promises as well but also supports async/await syntax.

• Axios has better error handlin
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Q2. Describe MVC in Rails
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MVC in Rails is a software design pattern that separates the application into three main components: Model, View, and Controller.
• Model: Represents the data and business logic of the application

• View: Represents the user interface of the application

• Controller: Handles user input, interacts with the model, and updates the view

• Example: In a Rails application, a User model would handle user data, a Profile view would displa...read more
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Some technical questions on C, linux and data structure

Q1. Linked list, memory allocation, data types.
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Q2. Oops concept, encapsulation, Template, STL
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Q1. Stress Strain diagram for steel and aluminium
Ans. 
Stress strain diagrams show the relationship between stress and strain in materials like steel and aluminum.
• Stress strain diagrams for steel typically show a linear elastic region followed by a plastic region before failure.

• Aluminum stress strain diagrams may exhibit more ductility compared to steel.

• The ultimate tensile strength and yield strength can be determined from these diagrams for both materials.
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Q2. Sheet metal selection criteria, things to be considered for sheet metal design
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Q3. Questios about previous experience and projects
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Q4. Geometric dimensions and tolerance
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No coding test. Only technical interviews

Q1. Salary expectation
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Q2. Previous experience
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Q1. Storage concepts basics
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Q1. Server and storage testing
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Q1. Managerial roind
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Q1. What is storage classes In c ?
Ans. 
Storage classes in C define the scope and lifetime of variables.
• There are four storage classes in C: auto, register, static, and extern.

• Auto storage class is the default storage class for all local variables.

• Register storage class is used to define local variables that should be stored in a register for faster access.

• Static storage class is used to define local variables that retain their value between function calls.

• E...read more
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Q2. Write a program for string reverse?
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Program to reverse an array of strings
• Iterate through each string in the array and reverse it using built-in functions or by swapping characters

• Use a temporary variable to store the reversed string before updating the original string

• Ensure to handle edge cases like empty strings or null values
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Q3. What is malloc pointer?
Ans. 
malloc pointer is a function in C programming used to dynamically allocate memory.
• malloc pointer is used to allocate memory during runtime in C programming.

• It returns a pointer to the allocated memory.

• Example: int *ptr = (int*)malloc(10 * sizeof(int));
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Q4. What is ACL protocol?
Ans. 
ACL protocol stands for Access Control List protocol, used to control access to network resources by defining rules for allowing or denying traffic.
• ACL protocol is commonly used in networking to restrict access to certain resources based on defined rules.

• ACLs can be configured on routers, switches, and firewalls to control traffic flow.

• ACLs can be configured based on source/destination IP addresses, ports, protocols, e...read more
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Q5. Write a program for 1st lowest and 2nd lowest program in arrays
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Program to find 1st and 2nd lowest numbers in an array of strings
• Convert array of strings to array of integers

• Sort the array in ascending order

• Return the first and second elements of the sorted array
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