VMware 1v0-41.20 Associate VMware Network Virtualization Exam Practice Test

vSphere vMotion allows an administrator to upgrade hardware while keeping virtual machines online. vMotion enables the live migration of running VMs from one physical server to another with zero downtime, continuous service availability, and complete transaction integrity.

References:

VMware vSphere vMotion Documentation

Understanding vSphere vMotion

B. It is a module deployed in all transport nodes that provides L2 functionality. D. ESXi hosts support both N-VDS and VDS.

N-VDS (NSX Virtual Distributed Switch) and VDS (vSphere Distributed Switch) are both network switch constructs used in NSX-T Data Center. The N-VDS provides Layer 2 (L2) functionality and is deployed on all transport nodes to handle network traffic. ESXi hosts support both N-VDS and VDS, allowing for flexible network configurations.

References:

NSX-T Data Center: N-VDS Overview

VMware vSphere Distributed Switch Documentation

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

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

The firewall rule shown in the exhibit is part of a gateway firewall applied to a Tier-0 gateway (TO-GW-01). The key indicators are the "Category: LOCAL GATEWAY" and the "Applied to: TO-GW-01". The rule is set to "Drop" SSH traffic (port 22) from any source to the destinations listed (App-Servers, DB-Servers, Web-Servers).

References:

VMware NSX-T Data Center Documentation

Understanding Firewall Categories in 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

In a vSphere environment with NSX Data Center, a key recovery benefit during a disaster is the ability to simplify the disaster recovery (DR) process by not requiring the change of the IP addresses of workloads. This is due to NSX's ability to abstract the network configuration from the underlying physical infrastructure, allowing virtual machines to maintain their IP addresses regardless of their physical location.

References:

VMware NSX-T Data Center: Disaster Recovery

VMware NSX-T Data Center Architecture Overview

To enable vSphere High Availability (HA), ESXi hosts need access to shared data storage. Shared storage is critical for HA as it allows virtual machines to be restarted on other hosts within the cluster in the event of a host failure. The shared storage ensures that the virtual machine files are accessible to any host in the HA cluster, facilitating seamless failover.

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 optimize East/West traffic while maintaining an overlay-based Layer 3 communication, the customer can use Tier-1 Gateways in NSX-T Data Center. Tier-1 Gateways facilitate efficient internal routing and traffic management within the data center, optimizing East/West traffic.

References:

NSX-T Data Center Logical Routing

Understanding Tier-0 and Tier-1 Gateways

To achieve routing between all segments in a network that consists of three tiers using NSX-T, the administrator can use gateways. Specifically, the use of Tier-0 and Tier-1 Gateways enables routing between different segments. The segments can be connected to a Tier-1 Gateway, which in turn can be connected to a Tier-0 Gateway to provide routing to external networks.

References:

NSX-T Data Center Logical Routing

Tier-0 and Tier-1 Gateways

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

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.

The Distributed Resource Scheduler (DRS) can help solve the problem of virtual machines not getting required resources while some hosts in the cluster are underutilized. DRS balances the load across the hosts in a cluster by moving virtual machines to ensure optimal distribution of resources. It continuously monitors the cluster and makes adjustments to achieve better performance and resource utilization.

To encrypt file transfers between two sites that do not have the same subnet, the IPSEC VPN feature in NSX-T can be used. IPSEC VPNs provide secure communication over IP networks by encrypting the data transferred between the two sites, ensuring data confidentiality and integrity.

References:

NSX-T Data Center VPN Configuration

VMware NSX-T VPN Services

vRealize Network Insight (vRNI) helps customers monitor both virtual and physical networks, providing visibility into overlay and underlay networks. It offers comprehensive network visibility, analytics, and troubleshooting capabilities, enabling administrators to quickly identify and resolve network issues in NSX-T Data Center environments.

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.