Interview Questions of NSX-T

  Interview questions for an NSX-T Infrastructure Architect position:

1. What is VMware NSX-T and how does it differ from NSX-V?

   VMware NSX-T is a network virtualization and security platform designed to support multi-hypervisor environments, containerized workloads, and cloud-native applications. It is more flexible and scalable compared to NSX-V, which is tightly integrated with VMware vSphere and primarily supports vSphere environments

2. Can you explain the architecture of NSX-T?

   The NSX-T architecture consists of three main planes: the Management Plane, Control Plane, and Data Plane. The Management Plane, managed by NSX Manager, handles configuration and user interactions. The Control Plane, managed by the NSX Controller, maintains network topology and state. The Data Plane, implemented by NSX Edge and transport nodes, handles the actual packet forwarding

3. What are the key components of NSX-T?

   Key components include the NSX Manager (centralized management), NSX Controller (control plane functions), NSX Edge (gateway services), Transport Nodes (hypervisors and physical servers), and Logical Switches (virtual network segments)

4. How does NSX-T handle network segmentation and security?

   NSX-T uses micro-segmentation to apply security policies at the individual workload level, ensuring granular control over network traffic. It employs distributed firewalls and security groups to enforce policies, providing both east-west and north-south traffic security.

5. What is the role of the NSX Manager in NSX-T?

   The NSX Manager is responsible for managing the overall NSX environment, including configuration, monitoring, and policy enforcement. It provides a centralized point for managing the network and security policies and integrates with other VMware products.

   

6. How do you configure and manage logical switches in NSX-T?

   Logical switches in NSX-T are configured through the NSX Manager. You can create logical switches, associate them with transport zones, and attach VMs to these switches. Switching profiles can be applied to manage Layer 2 networking configurations.

   

7. What is the purpose of the NSX-T Edge Node?

   The NSX-T Edge Node provides gateway services such as north-south routing, load balancing, VPN, and NAT. It acts as the bridge between the virtual network and the physical network, handling traffic entering and leaving the NSX-T environment.

   

8. Can you describe the process of deploying NSX-T in a multi-site environment?

   Deploying NSX-T in a multi-site environment involves setting up NSX Managers and Edge Nodes at each site, configuring transport zones, and establishing connectivity between sites. This setup can support disaster recovery and active-active configurations.

9. How does NSX-T integrate with other VMware products like vSphere and vCenter?

   NSX-T integrates with VMware products such as vSphere and vCenter through APIs and plugins. This integration allows for seamless management of virtual networks and security policies within the vSphere environment, enhancing the overall functionality and ease of use.

10. What are some common troubleshooting steps for NSX-T network issues?

    Common troubleshooting steps include verifying network connectivity, checking the status of NSX components, using tools like TraceFlow for traffic analysis, and ensuring proper MTU settings. It's also important to check DNS and NTP configurations.

I hope these answers help with your preparation! If you need further details or have more questions, feel free to ask. Good luck with your interview!