1v0-41.20 Associate VMware Network Virtualization Questions and Answers

NSX-T Data Center natively provides Distributed IDS (Intrusion Detection System) as one of its security services. This service helps in detecting and preventing potential threats within the network.

References:

NSX-T Distributed IDS/IPS

NSX-T Data Center Security Overview

To enable features such as High Availability (HA), vMotion, and Distributed Resource Scheduler (DRS) in a vSphere environment, a vCenter Server is required. The vCenter Server provides centralized management and enables the orchestration of these advanced features. HA ensures virtual machine availability by restarting them on other hosts in the event of a failure. vMotion allows live migration of virtual machines without downtime, and DRS balances workloads across hosts in a cluster to optimize resource usage.

To ensure that the servers of a 3-tier application can communicate with each other and users can access the application from the external network using a multi-tier deployment, the administrator needs to:

C. Connect the three segments to a Tier-1 Gateway from the NSX UI: This ensures internal routing between the segments.

D. Connect the Tier-1 Gateway to the Tier-0 Gateway from the NSX UI: This enables routing from the internal network to the external network.

References:

NSX-T Data Center Logical Routing

Connecting Segments to Gateways

The three types of transport nodes in NSX-T are:

A. NSX Edges: These are nodes that provide edge services and north-south routing.

D. Bare-metal servers: These servers can be configured as transport nodes to extend NSX-T networking and security to physical workloads.

F. Hypervisors: These nodes run virtualized workloads and host NSX-T virtual switches, enabling NSX-T to manage network traffic within the virtual environment.

References:

NSX-T Data Center Transport Nodes

Preparing Transport Nodes for NSX-T

vSphere High Availability (HA) protects virtual machines against hardware failures by automatically restarting VMs on other available hosts in the cluster in case of a host failure. vSphere HA provides high availability for applications running in virtual machines, independent of the operating system and application.

References:

vSphere High Availability Documentation

Understanding vSphere HA

The Data Plane in the NSX-T Data Center architecture performs the network traffic forwarding. The Data Plane is responsible for the actual handling of packets, including switching, routing, and firewall enforcement. It operates based on the instructions from the Control Plane.

To connect two virtual machines to an already existing segment in NSX and verify communication:

D. Use the ping command to check connectivity between VMs: This can be used to test network connectivity between the two VMs.

E. Connect the VMs to the segment from the vSphere Client: This involves editing the VM settings in the vSphere Client to attach the VMs to the desired NSX segment (Web-Segment).

References:

NSX-T Data Center Networking Guide

Connecting VMs to a Segment

In ESXi, the following two network connection types can be enabled:

C. Connecting virtual machines to the physical network and to each other: This allows VMs to communicate with each other and with external networks via virtual switches.

D. Connecting VMkernel services to the physical network: This enables ESXi hosts to manage network traffic for services such as vMotion, iSCSI, NFS, and management.

References:

VMware vSphere Networking Documentation

Networking Best Practices for ESXi

NSX Intelligence provides visibility and dynamic security policy enforcement in an NSX-T Data Center environment. It offers real-time monitoring and analytics, helping administrators to understand network traffic patterns and enforce security policies dynamically based on observed behavior.

NSX-T Data Center supports BGP (Border Gateway Protocol) as a dynamic routing protocol. BGP is used for the exchange of routing information between different networks and is essential for enabling dynamic routing in large-scale environments.

The Management Plane in the NSX-T Data Center Architecture is responsible for creating and deleting network objects. This plane provides an interface for administrators to manage the network, including configuration and orchestration of network services.

References:

NSX-T Data Center Architecture Overview

NSX-T Management Plane

To create GENEVE backed segments using NSX-T Data Center, a customer needs to configure an Overlay Transport Zone. GENEVE is used as the encapsulation protocol for overlay networking in NSX-T, allowing the creation of logical network segments overlaid on top of the physical network.

References:

NSX-T Data Center: Creating an Overlay Transport Zone

Understanding NSX-T Overlay Transport Zones

To configure new L2 Broadcast Domains in NSX-T, an administrator should use Segments. Segments in NSX-T are equivalent to VLANs in traditional networking and are used to create logical L2 domains. They provide the necessary isolation and connectivity for virtual machines within the NSX-T environment.

To provide Layer 2 connectivity between vSphere and KVM hypervisors, the customer should use NSX-T Data Center. NSX-T supports heterogeneous environments and provides networking and security services across multiple hypervisors, including vSphere and KVM.

References:

NSX-T Data Center Overview

NSX-T Data Center Documentation