Cohesity Certified Installation Professional Exam Questions and Answers Best rated A+ Guaranteed Success Latest Update

1. What is the minimum number of nodes required to form a new Cohesity cluster? A) 1 B) 2 C) 3 D) 4 Answer: C Explanation: A production Cohesity cluster requires a minimum of three nodes to establish quorum and ensure high availability. While a single node can operate as a "Starter Cluster" for non-production or evaluation purposes, a three-node cluster is the smallest configuration that provides fault tolerance and distributed consensus. The Zeus service, which manages cluster coordination, relies on quorum calculations that require an odd number of nodes (3, 5, 7, etc.) to maintain proper operation during node failures . 2. Which network interface on a Cohesity node is designated as the primary management interface by default? A) eth0 B) eth1 C) bond0 D) bond1Answer: A Explanation: The eth0 interface serves as the primary management interface on Cohesity nodes by factory default. This interface is used for initial IP address assignment, GUI access, SSH management, and cluster communication. During the initial cluster creation process, the IP address assigned to eth0 becomes the node's management IP. The bonding interfaces (bond0, bond1) are typically created later during configuration to aggregate multiple physical interfaces for increased throughput and redundancy . 3. Which Cohesity role is required to create a new cluster? A) Viewer B) Operator C) ClusterAdmin D) BackupAdmin Answer: C Explanation: Only users with the ClusterAdmin role possess the necessary permissions to create a new Cohesity cluster. The implicit 'admin' user created during initial setup also has these privileges. The ClusterAdmin role provides full administrative access to cluster configuration, node management, and system settings. In contrast, the Operator role can manage backups and restores but cannot modify cluster settings, while the Viewer role is read-only. The BackupAdmin role is focused specifically on data protection operations . 4. Which log file should be checked first when a Cohesity node fails to join an existing cluster? A) /var/log/messages B) /cohesity/smash/log/ C) /cohesity/iris/log/ D) /var/log/ Answer: C Explanation: The file is the primary location for cluster join and discovery eventson a Cohesity node. The Iris service handles node registration, cluster membership, and communication with the cluster's leader node. When a node cannot join a cluster, will contain error messages related to version mismatches, network connectivity issues, authentication failures, or cluster state problems. While is relevant for storage operations and /var/log/messages for OS-level events, is the most direct source for join-related issues . 5. What is the default VLAN ID assigned to the management network on a Cohesity cluster? A) 0 B) 1 C) 100 D) None (untagged) Answer: D Explanation: By default, the management network on a Cohesity cluster is untagged, meaning no VLAN ID is assigned. This allows the cluster to operate on the native VLAN of the connected switch ports. Customers can configure tagged VLANs for management traffic during or after installation by creating VLAN subinterfaces. This flexibility allows the management network to be isolated onto specific VLANs in environments that require network segmentation for security or organizational purposes . 6. Which disk type is automatically used by Cohesity for metadata storage? A) SATA SSD only B) NVMe only C) SAS HDD only D) The fastest available disks in the node Answer: D Explanation: Cohesity automatically detects the available storage devices in a node and designates the fastest disks for the metadata tier. In all-flash nodes, metadata resides on the SSD or NVMe drives. In hybrid nodes, the system uses the first two HDDs or anydedicated SSDs present for metadata storage. This automatic tiering ensures that metadata operations, which are critical for file system performance, benefit from the lowest-latency storage available in the node configuration . 7. What is the prerequisite for using the "Quick Install" method when installing a 4-node Cohesity cluster? A) DHCP server on the management network B) All nodes must have factory-default settings C) A DNS A record for each node D) A dedicated storage VLAN Answer: B Explanation: The Quick Install method requires all nodes to be in a factory-default state with no prior cluster configuration. This method uses broadcast or multicast discovery to locate nodes on the same Layer 2 network segment, eliminating the need for DHCP or DNS configuration. Quick Install is designed for greenfield deployments where nodes are fresh from the factory or have been factory-reset. Once nodes have been part of a cluster or have had network settings manually configured, the Quick Install method will not work . 8. After physically racking and cabling Cohesity nodes, you power them on but see no LEDs on the BMC port. What is the most likely cause? A) Faulty power supply B) BMC requires a separate power connection C) The node is in standby mode D) Network cable is CAT5 instead of CAT6 Answer: C Explanation: Cohesity nodes have a standby power mode feature where the BMC (Baseboard Management Controller) remains inactive until the node is fully powered on via the front panel power button or through IPMI commands. This standby mode conserves power while the node is physically installed but not yet in operation. Pressingthe power button or sending a power-on command through IPMI will fully activate the node and enable BMC functionality, including network link detection and LED indicators on the BMC port . 9. Which command is used to initiate a cluster factory reset from the Cohesity CLI? A) cluster reset B) node reset C) install factory-reset D) cluster factory-reset Answer: C Explanation: The command install factory-reset executed from a node's SSH console wipes all configuration and data, returning the node to a clean factory state. This command is useful when a node needs to be removed from a cluster and repurposed, or when troubleshooting requires a fresh start. The factory reset process erases all cluster membership information, network configuration, and stored data. After a factory reset, the node can be added to a new cluster or reinstalled with the Quick Install method .