D-VXB-DY-A-24 Sample Questions Answers

When creating an NSX logical switch, a required step is to create a new name for the logical switch. Naming the logical switch is necessary to identify and manage it within the NSX environment.

References:

VMware NSX documentation on creating logical switches.

Best practices for network virtualization.

The standard expected timeline to complete an RCM (Release Certification Matrix) upgrade is 3 weeks. This timeline accounts for the necessary planning, execution, and validation steps to ensure a successful upgrade.

References:

Dell EMC RCM upgrade process documentation.

Best practices for system upgrades.

Identify the Correct Document: The Port Map is typically used to provide a visual representation of all the connections on a network switch, including those that have been recently upgraded1.

Understand the Purpose of a Port Map: A Port Map is a detailed diagram that shows the physical and logical connections to and from a network switch.It is an essential tool for network administrators to visualize the network topology and troubleshoot connectivity issues1.

Utilize the Port Map: After an upgrade, the Port Map can be referenced to verify that all connections have been correctly re-established and that the switch is functioning as expected within the network infrastructure1.

Understand VxLAN: VxLAN, or Virtual Extensible LAN, is a network virtualization technology that encapsulates Layer 2 Ethernet frames within Layer 3 UDP packets1.

Identify Encapsulation Process: This encapsulation allows for the creation of a virtualized Layer 2 network over an existing Layer 3 infrastructure, enabling greater scalability and flexibility in network design1.

Recognize VxLAN Functionality: By encapsulating Layer 2 frames in UDP packets, VxLAN extends Layer 2 networks over Layer 3 networks, which is particularly useful in cloud computing and data center environments1.

Reference Official Documentation: The Official Dell VxBlock Deploy Achievement document would align with this understanding of VxLAN, highlighting its role in network virtualization and the encapsulation process1.

Review Cisco ACI Deployment: When deploying a VxBlock system with Cisco ACI, it’s important to consider the physical connectivity and redundancy within the fabric1.

Consider Uplinks for Leaf Switches: For leaf switches in a Cisco ACI fabric, having a minimum of two uplinks is recommended to ensure redundancy and resiliency1.

Understand Fabric Load Balancing: While VXLAN is used within Cisco ACI for fabric load balancing, the consideration here is specifically about the physical uplinks from the leaf switches1.

Reference Official Documentation: The Official Dell VxBlock Deploy Achievement document provides guidelines for deploying VxBlock systems with Cisco ACI, including considerations for leaf switch connectivity1.

For40 DAEs, the maximum number of supported 2.5 inch drives is500 disks.

For6 DAEs, the maximum number of supported 2.5 inch drives is250 disks.

For20 DAEs, the maximum number of supported 2.5 inch drives is1000 disks.

For10 DAEs, the maximum number of supported 2.5 inch drives is150 disks.

Review the Dell Unity System Specifications: The Dell Unity system’s Drive Array Enclosures (DAEs) have different capacities, which determine the number of drives they can support1.

Match DAE Capacity to Drive Support: Each DAE capacity has a corresponding maximum number of supported drives, as outlined in the Dell VxBlock Deploy Achievement document1.

Verify with Official Documentation: Cross-reference the information with the official Dell documentation to ensure the accuracy of the drive support for each DAE capacity1.

Review VMKernel NIC Functions: The VMKernel NIC in VMware vSphere provides network connectivity for hosts and handles system traffic for various services1.

Identify vMotion Service: Among the services provided by the VMKernel NIC, vMotion is a key feature that allows for the live migration of virtual machines from one host to another without downtime1.

Understand vMotion: vMotion requires network connectivity to transfer the memory and state of a virtual machine.The VMKernel NIC facilitates this connectivity and ensures the seamless migration of VMs1.

Reference VMware Documentation: VMware documentation confirms that the VMKernel NIC handles system traffic for vMotion, among other services1.

Review Test Plan Guidelines: The Test Plan guidelines in the Dell VxBlock Deploy Achievement document outline the procedures for validating the redundancy capabilities of the network1.

Understand Redundancy Validation: Redundancy validation involves testing the network’s ability to continue operating in the event of a component failure1.

Identify Redundancy Components: Top of Rack (ToR) switches are critical components that often have redundancy built-in to ensure network resilience1.

Execute Redundancy Test: To validate redundancy, the primary ToR switch is powered off to simulate a system failure.This tests the failover mechanisms and ensures that the secondary systems take over without service disruption1.

Document and Analyze Results: After the test, the results are documented and analyzed to confirm that redundancy measures are functioning as intended and that there is no loss of connectivity or service1.

The Isilon OneFS operating system integrates the traditional storage architecture layers of FileSystem, DataManager, and VolumeManager. This integration simplifies management and improves performance by combining file system, data management, and volume management functions into a single layer.

References:

Dell EMC Isilon OneFS documentation.

Technical guides on Isilon architecture and features.

The Converged Systems Administration Guide includes a complete list of tools used to perform a VxBlock 1000 upgrade. This guide provides detailed instructions and necessary resources for administrators to manage and upgrade VxBlock systems.

References:

Dell EMC Converged Systems documentation.

Best practices for system upgrades and administration.

During an RCM (Release Certification Matrix) upgrade escalation, the Delivery Manager is an optional resource. While not always required, the Delivery Manager can be involved to provide additional oversight and coordination if needed.

References:

Dell EMC RCM process documentation.

Project management escalation procedures.

Review Isilon OneFS Features: Isilon OneFS is a storage platform that offers a range of features, some of which require licensing1.

Identify Base Feature: Among the base features of Isilon OneFS, SMARTCONNECT is typically enabled during the CPSD Logical Build process1.

Understand SMARTCONNECT: SMARTCONNECT is designed to optimize resource utilization and performance by directing client requests to the most suitable node within the cluster1.

Reference Official Documentation: The Official Dell VxBlock Deploy Achievement document would list SMARTCONNECT as the base feature enabled during the CPSD Logical Build process, aligning with industry standards for data protection1.

Review Cisco ACI Components: Cisco ACI is a comprehensive networking solution for data centers that includes specific components designed to work within its architecture1.

Identify Non-ACI Component: The Cisco Nexus 7000 series switches are not part of the Cisco ACI solution.Cisco ACI is built on Cisco Nexus 9000 series spine and leaf switches1.

Understand ACI Architecture: The Cisco ACI architecture is designed around the Cisco Application Policy Infrastructure Controller (APIC) and the Nexus 9000 series switches, which work together to provide a policy-driven solution that automates network provisioning and control1.

Recognize ACI Specific Entities: The Cisco ACI End Point Group (EPG) is a fundamental entity within the ACI architecture that groups together similar endpoints with common policy requirements1.

 VxBlock Central

 Network

 Storage

 Compute

 Virtualization

In the Dell EMC RCM (Release Certification Matrix) Workbook upgrade plan, the sequence of upgrading VxBlock components is designed to ensure system stability and minimize disruptions. Here’s the detailed reasoning for the correct sequence:

VxBlock Central:

Explanation: VxBlock Central is the management and orchestration layer of the VxBlock system. Upgrading this first ensures that the management tools are compatible with the new versions of the other components and can properly coordinate and monitor the upgrade process.

Based on CPSD (Converged Platform & Solutions Division) guidelines for VxBlock 1000, up to 6 UCS chassis can be installed in a single rack. This configuration maximizes the use of available space while maintaining proper airflow and cooling.

References:

Dell EMC VxBlock 1000 installation and configuration guides.

Best practices for data center rack management.

In a VxBlock system, the NSX Controller resides in the Management cluster. The Management cluster is responsible for housing management components and services, ensuring centralized control and management of the NSX environment.

References:

Dell EMC VxBlock system documentation.

VMware NSX deployment and architecture guides.

Understand ACI Fabric: ACI fabric policies are applied to manage and control the network traffic within the fabric1.

Identify Policy Application: Policies in ACI are applied between Endpoint Groups (EPGs), which are collections of network endpoints with common policy requirements1.

Recognize Policy Direction: These policies can be applied in a unidirectional or bidirectional manner, providing flexibility in controlling the flow of traffic between EPGs1.

Reference Official Documentation: The Official Dell VxBlock Deploy Achievement document would align with Cisco’s guidelines on ACI fabric policies, which state that policies can be applied between two or more EPGs and can be either unidirectional or bidirectional1.

During the Executing and Controlling phase of the RCM (Release Certification Matrix) Upgrade process, the customer is required to maintain configuration lock. This ensures that no changes are made to the system configuration during the critical upgrade process, maintaining system stability and integrity.

References:

Dell EMC RCM upgrade process documentation.

Project management best practices.

The order of steps taken when using an NSX edge service gateway with proxy mode load balancing is as follows:

Client sends traffic to virtual IP address exposed by the load balancer.

Load balancer performs address translation and sends traffic to server IP.

Server replies by sending the traffic to the load balancer.

Load balancer performs address translation and sends the traffic to client IP.

The process begins with aclient initiating communicationby sending traffic to a virtual IP address, which is managed by the NSX edge service gateway functioning as a load balancer.

Upon receiving the traffic, theload balancer translates this virtual IP addressinto one of the actual server IPs that it manages, effectively directing the client’s request to an appropriate server in its pool.

The selected server processes this request andresponds back, sending its reply to the load balancer rather than directly back to the client.

Finally, once receiving this response from the server, the load balancertranslates it from its own internal server IP back into what appears as a response from the original virtual IP addressand forwards this response on to complete communication loop back at the client’s end.