TCS Senior Analyst II Interview Questions and Answers

Q1. What is network?
Ans. 
A network is a collection of computers, servers, mainframes, network devices, and other devices connected to one another to share data and resources.
• Networks can be classified based on their size (LAN, WAN, MAN)

• They can be wired or wireless

• Common network devices include routers, switches, and firewalls

• Examples of networks include the internet, intranets, and extranets
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Q2. What is vpn and how to implement it?
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VPN stands for Virtual Private Network, a secure connection that allows users to access the internet privately and securely.
• VPN creates a secure encrypted connection over a less secure network, such as the internet.

• It masks your IP address and encrypts data to ensure privacy and security.

• VPN can be implemented using VPN software or apps, configuring VPN settings on devices, or using VPN routers.

• Examples of VPN services
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Q3. What is ipsec?and how to implement it?
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IPsec stands for Internet Protocol Security, a protocol suite used to secure Internet Protocol (IP) communications.
• IPsec provides authentication, integrity, and confidentiality for data transmitted over a network.

• It can be implemented through various protocols such as Authentication Header (AH) and Encapsulating Security Payload (ESP).

• IPsec can be used to create Virtual Private Networks (VPNs) for secure communication ...read more
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Q1. Same question asked
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Q2. Same question asked and how we can understand
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Core Java questions with oops concepts covered

Q1. MCQ on all core Java questions and sql
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Q1. Package discussion based on experience
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Q1. About my project on what i had worked in previous organization
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Q2. What challenges i had faced
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Q1. What is BIOS and how it works?
Ans. 
BIOS stands for Basic Input/Output System. It is a firmware that initializes hardware components during the boot process.
• BIOS is a firmware embedded on a small chip on the motherboard of a computer.

• It is responsible for initializing and testing hardware components like the CPU, memory, and storage devices during the boot process.

• BIOS also provides a basic set of instructions for the operating system to interact with th...read more
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Q1. 1.How you identify rank for a serious of students,write a query
Ans. 
Ranking students based on their performance using a query
• Use the RANK() function in SQL to assign a rank to each student based on their performance

• Order the students by their performance metric (e.g. grades) in descending order

• Handle ties by using the DENSE_RANK() function instead of RANK()

• Consider using the ROW_NUMBER() function if you want to assign unique ranks without handling ties
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