NCA-6.5 Exam Dumps - Nutanix Certified Associate (NCA) Questions and Answers

When the Cassandra and Stargate services fail frequently on a single node, the cluster will automatically put the host in Maintenance Mode to ensure the reliability and performance of the cluster. This will remove the node from the cluster's IO path and prevent any data loss or corruption. Reference: https://portal.nutanix.com/page/documents/details?targetId=Platform-Administrator-Guide-v5_7:pag-maintenance-mode-c.html

Link Aggregation Control Protocol (LACP) is a NIC-teaming configuration that balances network traffic based on source/destination IP addresses and TCP/UDP ports. LACP allows the administrator to configure multiple NICs as a single logical NIC, known as a Link Aggregation Group (LAG), which can increase the available bandwidth and provide redundancy. LACP uses a hashing algorithm to distribute traffic across the NICs in the LAG, based on the source and destination IP addresses and TCP/UDP ports. This ensures that traffic is evenly distributed across the NICs, which helps to improve overall network performance and availability. Reference: https://portal.nutanix.com/page/documents/details?targetId=Web-Console-Guide-Prism-v5_11:wc-network-configuring-uplink-ports_wc-network-configuring-uplink-ports.html

To configure Replication Factor 1 (RF1), the cluster must have at least three nodes. In RF1, data is replicated to two other nodes within the cluster, so having at least three nodes is necessary to ensure that the data is replicated. Moreover, when you configure RF1, the cluster must have a minimum of three nodes to ensure that the data is accessible even if one of the nodes goes down. Reference: https://portal.nutanix.com/page/documents/details?targetId=Prism-Admin-Guide-v5_6:pr-data-protection-replication-factor-c.html

LCM (Lifecycle Manager) is a tool provided by Nutanix to automate software and firmware upgrades for Nutanix clusters. However, LCM is unable to perform firmware upgrades against a (D) Single-node cluster configuration.

This is because a single-node cluster does not have any redundancy, so there is no way to perform an upgrade without taking the entire cluster offline. In contrast, multi-node clusters can typically be upgraded in a rolling fashion, with one or more nodes being upgraded at a time while the rest of the cluster remains online.

LCM is capable of performing firmware upgrades against two-node, three-node, and five-node cluster configurations, as long as they meet the other requirements for LCM support (such as being on a supported AOS release and having the appropriate network connectivity).