Tech Mahindra CCNA Interview Questions and Answers

Tech Mahindra CCNA Interview Questions and Answers

As an aspiring network engineer aiming to join Tech Mahindra, it is essential to have a strong understanding of CCNA
(Cisco Certified Network Associate) concepts to excel in the interview process. This blog post dives deep into
the most frequently asked CCNA interview questions at Tech Mahindra, helping you prepare effectively for the
opportunity ahead.

1. What is the significance of CCNA certification?

CCNA certification holds immense significance as it validates foundational knowledge in network engineering. It
showcases your ability to install, configure, operate, and troubleshoot medium-sized routed and switched
networks. For job seekers eyeing a position in networking, CCNA certification is a stepping stone towards career
advancement.

2. How do you differentiate between a router and a switch?

A router operates at the network layer (Layer 3) and is responsible for forwarding data packets based on IP
addresses. It connects multiple networks and chooses the best path for data transmission. On the other hand, a
switch operates at the data link layer (Layer 2) and is used to create networks by connecting multiple devices
together within a LAN (Local Area Network).

3. Explain the purpose of subnetting.

Subnetting allows for the division of a network into smaller subnetworks, providing multiple benefits such as:

  • Efficient utilization of IP addresses
  • Better network performance
  • Improved security through segregation
  • Minimization of network congestion

4. What are the different types of routing protocols?

Routing protocols help in determining the best path for data transmission. The common types of routing protocols
include:

  1. Distance Vector Routing Protocol
  2. Link-State Routing Protocol
  3. Hybrid Routing Protocol
  4. Path Vector Routing Protocol

5. How is VLAN (Virtual Local Area Network) different from a physical network?

VLAN is a logical concept of dividing a single physical network into multiple virtual networks. It offers several
advantages over physical networks:

  • Enhanced security
  • Improved network performance
  • Flexibility in network management
  • Cost savings through reduced cabling

6. What is NAT (Network Address Translation)? Explain its types.

NAT is a technique used to map private IP addresses to public IP addresses. The three commonly used types of NAT
are:

  1. Static NAT: Maps a single private IP address to a single public IP address.
  2. Dynamic NAT: Maps multiple private IP addresses to a pool of public IP addresses.
  3. Port Address Translation (PAT): Maps multiple private IP addresses to a single public IP address using
    different ports.

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