Busy Infotech SDE Interview Questions and Answers

Telco security involves protecting telecommunications networks and data from cyber threats. It includes protocols like SSL, IPSec, and VPN.

• Telco security focuses on securing telecommunications networks and data from cyber attacks

• Protocols like SSL (Secure Sockets Layer), IPSec (Internet Protocol Security), and VPN (Virtual Private Network) are commonly used in telco security

• Encryption and authentication are key compone...read more

Find second max salary of employee by department in SQL

• Use GROUP BY clause to group employees by department

• Use MAX() function to find the maximum salary

• Use subquery to find the second maximum salary

Find second max salary of employee by department using pandas dataframe

• Group the dataframe by department

• Sort the salaries in descending order

• Select the second highest salary for each department

Python code to download file from aws s3 to local using boto3

• Install boto3 library using pip

• Create an S3 client using boto3

• Use the download_file method to download the file from S3 to local

A program to count the number of words in a text file using PySpark.

• Read the text file using SparkContext

• Split the lines into words using flatMap

• Map each word to a tuple of (word, 1)

• Reduce by key to count the occurrences of each word

• Save the output to a file