H&R Block Developer Interview Questions and Answers

Aptitude was focused on SQL questions

Q1. What are joins , its types
Ans. 
Joins are used to combine data from two or more tables based on a related column.
• Types of joins include inner join, left join, right join, and full outer join.

• Inner join returns only the matching rows from both tables.

• Left join returns all the rows from the left table and matching rows from the right table.

• Right join returns all the rows from the right table and matching rows from the left table.

• Full outer join returns...read more
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Q2. Tell us Linux commands you know
Ans. 
I know various Linux commands including ls, cd, mkdir, rm, cp, mv, grep, awk, sed, and more.
• ls - list directory contents

• cd - change directory

• mkdir - make directories

• rm - remove files or directories

• cp - copy files or directories

• mv - move or rename files or directories

• grep - search for a pattern in a file

• awk - manipulate text files

• sed - stream editor for filtering and transforming text
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