1v0-41.20 Associate VMware Network Virtualization Questions and Answers

NSX managed compute endpoints are called Transport Nodes. A transport node is a host or a NSX Edge that has NSX modules installed and is registered with the NSX Manager.

References:

NSX-T Data Center Transport Nodes Documentation

Transport Node Overview

The key value for the VMware approach to a software-defined data center (SDDC) is a vendor-agnostic platform. VMware's SDDC architecture supports a wide range of hardware, software, and cloud environments, providing flexibility and interoperability regardless of the underlying vendor.

References:

VMware SDDC Overview

VMware SDDC Benefits

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

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.

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

In the NSX-T Data Center Architecture, the three different types of planes available are:

Control Plane: This plane is responsible for managing the communication between the management plane and the data plane. It handles the configuration and propagation of network state.

Management Plane: This plane provides the interface for the user to manage the network. It includes the NSX Manager and other management tools.

Data Plane: This plane is responsible for handling the actual data packet processing and forwarding.

The Network Plane, Routing Plane, and Security Plane are not part of the defined planes in NSX-T architecture terminology.

In the NSX-T Data Center Architecture, the Data Plane components include:

B. Edge Node: These nodes are responsible for providing services such as routing, NAT, and load balancing. Edge nodes are critical for north-south traffic and can also handle east-west traffic.

D. Hypervisor: The hypervisor is part of the data plane as it hosts the NSX-T virtual switches (N-VDS or VDS) that handle network traffic for VMs.

References:

NSX-T Data Center Architecture Overview

NSX-T Data Plane Components

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

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

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 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

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.

In NSX-T Data Center, the Geneve protocol is used to provide overlay networks on top of physical networks. Geneve (Generic Network Virtualization Encapsulation) is a tunneling protocol that enables the creation of virtual network overlays, allowing for the segmentation and isolation of network traffic in multi-tenant environments. This flexibility simplifies network management and enhances scalability.

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