Technical Operations Engineer

Technical Operations Engineer Interview Questions and Answers

Updated 24 Oct 2023
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Q1. 3) What is Two Factor Authentication and why do we need token

Ans.

Two Factor Authentication (2FA) is a security process that requires users to provide two different authentication factors to verify their identity.

  • The two factors can be something the user knows (like a password) and something the user has (like a token or smartphone app)

  • 2FA provides an extra layer of security to prevent unauthorized access to sensitive information or systems

  • Tokens are often used as the second factor in 2FA because they are physical devices that generate a un...read more

Q2. You have a table with unlimited no of rows in it how will you be able to deleted the rows which are dupilicate.

Ans.

Use SQL query with GROUP BY and HAVING clause to identify and delete duplicate rows.

  • Use GROUP BY clause to group rows with same values

  • Use HAVING clause to filter out groups with count greater than 1

  • Use DELETE statement to remove duplicate rows

Q3. How do you troubleshoot API HTTP requests?

Ans.

I troubleshoot API HTTP requests by analyzing logs, checking network connectivity, and testing with different tools.

  • Check server logs for error messages

  • Verify network connectivity and firewall settings

  • Use tools like Postman or cURL to test requests

  • Check API documentation for expected responses

  • Collaborate with developers to identify and resolve issues

Q4. How good are you with Linux

Ans.

I am very proficient in Linux and have extensive experience working with various distributions.

  • Proficient in command line interface and shell scripting

  • Experience with Ubuntu, CentOS, and Red Hat

  • Familiarity with package management systems such as apt and yum

  • Comfortable with system administration tasks such as user management and file permissions

  • Experience with virtualization technologies such as Docker and Kubernetes

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Q5. What is sql and BDMS & RDBMS

Ans.

SQL is a programming language used to manage data in relational databases. RDBMS is a software used to manage relational databases.

  • SQL stands for Structured Query Language

  • It is used to manage data in relational databases

  • RDBMS stands for Relational Database Management System

  • It is a software used to manage relational databases

  • Examples of RDBMS include MySQL, Oracle, and Microsoft SQL Server

Q6. What is primary key ?

Ans.

Primary key is a unique identifier for each record in a database table.

  • Primary key ensures each record in a table is unique

  • It can consist of one or multiple columns

  • Primary key values cannot be NULL

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Q7. What is RESTFUL API?

Ans.

RESTful API is an architectural style for building web services that use HTTP requests to access and manipulate data.

  • REST stands for Representational State Transfer

  • It uses HTTP methods like GET, POST, PUT, DELETE to perform operations on resources

  • It is stateless and client-server based

  • It uses standard data formats like JSON, XML

  • Example: Twitter API, Facebook API

Q8. what is left join ?

Ans.

Left join is a type of join operation in SQL that returns all rows from the left table and matching rows from the right table.

  • Left join combines rows from two tables based on a related column between them.

  • If there is no match in the right table, NULL values are returned for the columns of the right table.

  • Example: SELECT * FROM table1 LEFT JOIN table2 ON table1.id = table2.id;

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