EarlySalary Services Telesales/Telemarketing Executive/Officer Interview Questions and Answers

Q1. Find median of 2D array
Ans. 
Find median of 2D array of strings
• Flatten the 2D array into a 1D array

• Sort the 1D array

• Calculate the median based on the length of the array
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Q1. LLD of Twitter System
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Q1. Tell me about yourself.
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It was leetcode questions for 60 min for 2 questions.

Q1. Tell me about your self
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Q1. Tell me about your work experience
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Hackerrank test mostly on python and sql

Q1. SQL based questions
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Q2. Python based questions
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Q1. DHCP and DNS difference
Ans. 
DHCP assigns IP addresses to devices on a network, while DNS resolves domain names to IP addresses.
• DHCP dynamically assigns IP addresses to devices on a network

• DNS resolves domain names to IP addresses

• DHCP is used for automatic IP address configuration

• DNS is used for translating domain names to IP addresses

• DHCP operates at the network layer (Layer 3)

• DNS operates at the application layer (Layer 7)
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Q2. Networking protocols and respective port numbers.
Ans. 
Networking protocols and their respective port numbers are essential for communication between devices.
• HTTP - Port 80

• HTTPS - Port 443

• FTP - Port 21

• SMTP - Port 25

• SSH - Port 22

• DNS - Port 53
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Q1. Current and expected Salary
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Q2. Reason for leaving the current company.
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Q1. Output of basic sql queries
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Q1. RCA with SQL and aptitude questions
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RCA + more heavy on analytical side

Q1. Open ended problem solving round
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