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Nutanix NCS-Core Nutanix Certified Services Core Infrastructure Professional v6.8 Exam Practice Test
Question 1
An administrator knows that the disks in a cluster are out of date and a new firmware is available. For security reasons, these clusters do not have access to the Internet.
Which two steps must be completed to update the firmware? (Choose two.)
Answer : A, B
Question 2
A consultant deploys a Nutanix cluster with AOS and ESXi. The cluster is managed by a vCenter server.
After installation, what should the consultant do to ensure the cluster will support network segmentation?
Answer : C
After deploying a Nutanix cluster with AOS and ESXi managed by a vCenter server, the consultant should ensure that both CVM eth0 and eth2 interfaces are connected to the assigned portgroups on the standard or distributed switch. This setup allows for network segmentation and proper traffic isolation, which is crucial for maintaining network security and efficiency in a virtualized environment. Reference: Nutanix Bible, Nutanix University NCS-Core 6.8 learning materials
Question 3
An administrator is deploying a three-tier application on a Nutanix Enterprise Cloud consisting of web, application, and database VMs. Traffic between the servers must be limited to specific services/ports. There is an application layer firewall VM deployed on one host in the cluster.
In which way should the administrator meet this requirement?
Answer : D
For a multi-tier application where traffic must be limited to specific services and ports across web, application, and database VMs, the optimal approach is to use microsegmentation features provided by Nutanix. Option D, 'Categorize the VMs in Prism Central and utilize Flow to set a security policy,' is the correct choice.
Nutanix Flow allows for detailed security policies that control VM-to-VM traffic within the same cluster, effectively managing access and communication based on specified criteria like VM category, service, or application type. This solution enables precise control over traffic flows, enhancing security without requiring additional physical or virtual network segmentation.
Reference: Nutanix Flow capabilities are detailed in Nutanix Prism Central's documentation, which explains how to implement microsegmentation and security policies for application-specific traffic management.
Question 4
A consultant deployed a Nutanix Files cluster using separate networks for client and storage.
For testing a SMB standard share, a VM has been deployed on storage network. However, the consultant cannot access the share.
What is the cause of the issue?
Answer : B
If a VM deployed on the storage network cannot access a SMB standard share, the likely issue is that:
Clients on the same subnet as the storage network cannot access the shares: This scenario typically occurs due to network segmentation policies or firewall rules that restrict access to the storage network from clients within the same subnet, intended to segregate traffic types for security and performance reasons.
Nutanix Technical Documentation on Nutanix Files, which covers network configuration and troubleshooting issues related to file access.
Question 5
A customer has Metro Availability configured in Automatic Resume Mode between Site A and Site B What happens to VMs if Primary Site A has full network failure?
Question 6
An administrator is deploying Nutanix Files 3.5 and needs to configure the sizing of the FSVMs for an increased number of concurrent SMB connections over the default 750.
What should the administrator do?
Question 7
An administrator inherits a new Nutanix environment and logs in to a CVM to check the network configuration. The configuration is as follows:
Which action should the administrator take to improve network performance?
Answer : C
Upon reviewing the network configuration in the provided image and considering the setup in a Nutanix environment, the best action to improve network performance is to adjust the bonding mode for the bridge that includes multiple high-bandwidth interfaces.
Option C, 'Configure balance-sib or balance-tcp mode for br0-up if switch configuration allows,' is the most effective choice. The bonding mode 'balance-sib' (source IP-based load balancing) or 'balance-tcp' (TCP/IP layer balancing) can optimize the distribution of network traffic across multiple interfaces, thereby enhancing throughput and redundancy.
This approach utilizes the capabilities of multiple network interfaces more efficiently, distributing the load to prevent any one interface from becoming a bottleneck while providing failover redundancy.
Reference: This configuration strategy aligns with best practices for network setup in high-performance virtualized environments, as detailed in Nutanix's networking configuration guides and the Nutanix Bible, ensuring optimal performance and reliability.
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