TCS CCNA Interview Questions

TCS CCNA Interview Questions: Top 20 Questions to Prepare for Your Interview

Preparing for an interview can be nerve-wracking, especially when it comes to technical roles like CCNA (Cisco Certified Network Associate) at TCS (Tata Consultancy Services). To help you in your preparation, we have gathered the top 20 CCNA interview questions that are commonly asked during TCS interviews. Remember, these questions are just a starting point, and it is essential to have a solid understanding of the CCNA concepts and real-world scenarios to ace your interview.

1. What is the difference between a router and a switch?

A router connects multiple networks together and determines the best path for data packets to travel. On the other hand, a switch connects multiple devices within a network and forwards data packets to the intended recipient based on MAC addresses.

2. Explain the purpose of subnetting.

Subnetting is the process of dividing an IP network into smaller subnetworks. It helps in efficient utilization of IP addresses, enhances network security, and reduces network traffic by isolating specific devices or departments within a network.

3. How does DHCP (Dynamic Host Configuration Protocol) work?

DHCP is a network protocol that automatically assigns IP addresses and other network configuration parameters to devices on a network. It eliminates manual IP address configuration and ensures efficient IP address management within a network.

4. Describe the difference between TCP (Transmission Control Protocol) and UDP (User Datagram Protocol).

TCP provides reliable, connection-oriented data delivery with error-checking and flow control mechanisms. UDP, on the other hand, offers connectionless and unreliable data delivery without any error-checking or flow control, making it ideal for real-time applications where speed is crucial.

By going through these interview questions, you will gain a deeper understanding of the CCNA concepts and be better prepared for your TCS interview. Remember to practice your answers, research further, and stay updated with the latest networking technologies and trends. Good luck!

Leave a Comment