3V0-13.26 Exam VMware Certified Advanced Professional - VMware Cloud Foundation Support https://www.passquestion.com/3v0-13.26.html 35% OFF on All, Including 3V0-13.26 Questions and Answers Pass 3V0-13.26 Exam with PassQuestion 3V0-13.26 questions and answers in the first attempt. https://www.passquestion.com/ 1. An ESXi host in a VCF Workload Domain cluster recently experienced a network isolation event. You suspect that the vSphere HA (High Availability) master election process failed or experienced delays during this event. Which specific log file on the ESXi host must you review to analyze the vSphere HA agent states and the master/slave election process? A. /var/log/vpxa.log B. /var/log/fdm.log C. /var/log/hostd.log D. /var/log/clomd.log Answer: B Explanation: fdm stands for Fault Domain Manager, which is the underlying service for vSphere HA. Any issues related to HA cluster elections, host isolation responses, or HA agent initialization will be recorded in /var/log/fdm.log. l vpxa.log is for vCenter communication. l hostd.log is the main host management agent. l clomd.log is related to vSAN object management. 2. A Workload Domain relies on external Fibre Channel (FC) storage. After a zoning change on the physical fabric switches, an ESXi host is reporting storage path redundancy degradation. Which native ESXi command line tool is best suited to quickly list all logical units (LUNs) and verify the state (e.g., Active, Dead) of every single path connecting to them? A. esxcli storage core path list B. esxtop C. vmkping D. esxcli vsan storage list Answer: A Explanation: The command esxcli storage core path list provides a detailed breakdown of all storage paths (Runtime Name, Target, LUN, and their current physical State like 'Active', 'Dead', or 'Standby'). It is the foundational CLI command for verifying non-vSAN multipathing and fabric connectivity issues. 3. You need to perform a baseline health check on a vSAN host within a VCF Workload Domain. You specifically want to verify if the ESXi host claims its flash caching and capacity devices correctly, and check the CMMDS (Cluster Member, Materialized Dict. Service) state of each disk. Which esxcli command will display detailed physical disk information specifically formatted for vSAN, including whether a disk is used for caching or capacity? A. esxcli storage core device list B. esxcli storage vmfs extent list C. esxcli vsan storage list D. esxcli vsan cluster get Answer: C Explanation: esxcli vsan storage list is the dedicated command to list all storage devices claimed by vSAN on a specific host. It clearly outputs the vSAN UUID of the disk, its tier role (capacity vs. cache), disk group UUID, and its CMMDS state. While esxcli storage core device list shows raw disks, it does not show vSAN-specific metadata and roles. PassQuestion 3V0-13.26 Practice Questions 2 / 8 4. A development Virtual Machine is experiencing extreme latency. You open esxtop on the underlying ESXi host and press 'm' to enter the Memory view. You suspect the ESXi host is running out of physical RAM and has started forcing VMs to reclaim memory. Match the esxtop memory metric (1-3) with its correct definition (A-C). Metrics: 1. MCTLSZ 2. SWCUR 3. ACTV Definitions: A) The amount of memory currently being actively read/written by the guest OS. B) The amount of memory reclaimed by the ESXi host using the VMware Tools Balloon Driver. C) The amount of memory actively swapped to the hypervisor's physical disk swap file. A. 1-B, 2-C, 3-A B. 1-C, 2-B, 3-A C. 1-A, 2-C, 3-B D. 1-B, 2-A, 3-C Answer: A Explanation: l 1. MCTLSZ (Memory Control Size) matches B. This is the memory ballooning metric. A value > 0 means the host is under contention and forcing the guest OS to page out memory. l 2. SWCUR (Swap Current) matches C. This represents VM memory swapped to the ESXi disk, which is severely detrimental to performance. l 3. ACTV (Active) matches A. This is the hypervisor's estimate of how much memory the VM is actively touching at this exact moment. 5. You are investigating a potential networking bottleneck on an ESXi host. A physical uplink (vmnic2) dedicated to vMotion and vSAN traffic might be dropping packets due to a faulty SFP module or cable. Which esxcli command provides real-time, low-level physical network interface statistics, including specific counters for receive (Rx) and transmit (Tx) dropped packets? A. esxcli network ip interface ipv4 get B. esxcli network nic stats get -n vmnic2 C. esxcli network vswitch standard list D. esxcli network vm list Answer: B Explanation: The command esxcli network nic stats get -n <vmnic> queries the physical network adapter's driver directly to retrieve hardware-level statistics. It is the definitive way to check for CRC errors, length errors, or Rx/Tx dropped packets on a physical uplink without relying on vCenter performance charts. 3V0-13.26 VCF Support - Mock Exam Practice Set 02 Phase 1: Storage & Compute Infrastructure Difficulty: Level 1 (Tool & Log Basic Identification) PassQuestion 3V0-13.26 Practice Questions 3 / 8 6. An ESXi host in your VCF Workload Domain has experienced a Purple Screen of Death (PSOD) and automatically rebooted. You need to retrieve the core dump file for Broadcom Support to analyze the crash. Assuming a core dump partition is configured, in which default directory will the ESXi host save the extracted diagnostic dump file (zdump) after successfully rebooting? A. /var/log/ B. /var/core/ C. /vmfs/volumes/vsanDatastore/ D. /var/run/log/ Answer: B Explanation: When an ESXi host experiences a PSOD, it dumps its memory state to the configured diagnostic partition. Upon reboot, the esxcfg-dumppart utility automatically extracts this data and saves it as a compressed vmkernel-zdump file in the /var/core/directory. Broadcom Support will require the files from this specific directory for root cause analysis. 7. A virtual machine in the Management Domain fails to power on with the error "Failed to lock the file". You suspect that another ESXi host has locked the VM's .vmdk or .vmx file due to a previous HA event or an underlying storage glitch. Which native ESXi command-line utility should you use to query the lock status and determine the MAC address of the host that currently holds the lock on the virtual machine files? A. vmkfstools -D B. esxcli storage vmfs extent list C. esxtop D. voma Answer: A Explanation: The vmkfstools -D command is used to dump the metadata of a VMFS file or virtual disk. The output of this command, combined with checking the /var/log/vmkernel.log file, will reveal the MAC address of the ESXi host that currently holds the lock on the file. voma is for checking VMFS metadata consistency, not file locks. 8. You are troubleshooting a vSAN cluster and need to quickly identify if there are any inaccessible or degraded objects directly from the ESXi command line. Which command will provide a summarized count of all vSAN objects grouped by their current health state (e.g., healthy, inaccessible, degraded)? A. esxcli vsan cluster get B. esxcli vsan storage list C. esxcli vsan debug object health summary get D. esxcli vsan network list Answer: C Explanation: The esxcli vsan debug object health summary get command provides a quick, high-level summary of the health of all vSAN objects. It categorizes them into states such as "healthy," "inaccessible," or "degraded" and gives a count for each, making it the fastest CLI tool to assess overall object health during a storage incident. PassQuestion 3V0-13.26 Practice Questions 4 / 8 9. The vSphere Client for a Workload Domain vCenter Server is loading extremely slowly or timing out. You SSH into the vCenter Server Appliance (vCSA) to verify if all essential services are running properly. Which command should you execute to list the status of all vCenter-specific services? A. systemctl status vmware-vpxd B. service-control --status --all C. esxcli system service list D. /etc/init.d/hostd status Answer: B Explanation: In the vCenter Server Appliance (vCSA), service-control is the primary command-line utility used to manage vCenter-specific services. Appending --status --all will list all registered vCenter services and clearly categorize them into "Running" and "Stopped" states. systemctl can check individual services but is not the VMware-recommended tool for checking the full suite of vCenter services simultaneously. 10. An administrator is attempting to mount a new NFS v3 datastore to an ESXi host, but the operation fails with a generic "An error occurred during host configuration" message in the vCenter UI. You need to inspect the host-level logs to find the specific NFS connection timeout or permission denied error. Which log file is the definitive source for this storage mounting information? A. /var/log/vpxa.log B. /var/log/fdm.log C. /var/log/auth.log D. /var/log/vmkernel.log Answer: D Explanation: The vmkernel.log records all activities related to the ESXi kernel, which includes storage networking and datastore mounting processes. Any failure to mount an NFS datastore (such as TCP timeouts, RPC errors, or NFS "access denied" messages) will be explicitly detailed in /var/log/vmkernel.log. 3V0-13.26 VCF Support - Mock Exam Practice Set 03 Phase 1: Storage & Compute Infrastructure Difficulty: Level 2 (Directed Troubleshooting & Order of Operations) PassQuestion 3V0-13.26 Practice Questions 5 / 8 11. You need to place a vSAN host in a VCF Workload Domain into maintenance mode to perform a physical memory upgrade. The cluster has ample capacity and uses a RAID-1 (FTT=1) storage policy. You want to ensure that all virtual machines remain accessible during the maintenance window, but you want to minimize the amount of data transferred across the vSAN network to save time. Which vSAN data migration option is the most appropriate to select when entering maintenance mode? A. Evacuate all data B. Ensure accessibility C. No data migration D. Decommission host Answer: B Explanation: The "Ensure accessibility" option is the default and best practice for temporary host maintenance in vSAN. It guarantees that all VMs have at least one active replica available (so they don't go down), but it avoids unnecessarily moving terabytes of redundant data to other hosts. "Evacuate all data" is used when permanently decommissioning a host or replacing a critical storage controller. "No data migration" risks VM downtime if the host contains the only copy of certain data components. 12. A virtual machine snapshot deletion failed, and the VM now requires a disk consolidation. However, the consolidation task in vCenter continuously fails with the error "Unable to access file since it is locked." Arrange the following troubleshooting steps in the correct chronological execution order to resolve the file lock and successfully consolidate the VM. 1. Run the vmkfstools -D command against the locked .vmdk file to identify the MAC address of the ESXi host holding the lock. 2. Log into the ESXi host that owns the MAC address and restart the hostd management agent to release the stale lock. 3. Initiate the "Consolidate" action on the virtual machine from the vSphere Client. 4. Match the MAC address identified in the logs to a specific ESXi host in your cluster. A. 1 -> 4 -> 2 -> 3 B. 4 -> 1 -> 2 -> 3 C. 1 -> 2 -> 4 -> 3 D. 2 -> 1 -> 4 -> 3 Answer: A Explanation: When dealing with locked VM files, you must first identify who holds the lock (Step 1: vmkfstools -D). That command returns a MAC address. You must then figure out which host that MAC address belongs to (Step 4). Once you find the offending host, you log into it and restart the management agents to drop the stale lock (Step 2). Finally, with the lock cleared, you can successfully consolidate the disks via the UI (Step 3). PassQuestion 3V0-13.26 Practice Questions 6 / 8 13. A highly transactional SQL database VM (configured with 16 vCPUs and 128GB RAM) is experiencing degraded performance. Using esxtop on the host, you notice that the VM's %CSTP (Co-Stop) value is consistently hovering above 10%. What does a high %CSTP value indicate, and what is the most appropriate architectural solution to resolve it? A. The VM is waiting for CPU resources due to high host CPU utilization; the solution is to migrate the VM to a less utilized host. B. The VM is experiencing memory swapping to disk; the solution is to increase the physical RAM reservation for the VM. C. The VM has too many vCPUs configured, leading to vSMP scheduling contention (the hypervisor is struggling to find 16 free cores simultaneously); the solution is to reduce the number of vCPUs (Right-sizing). D. The VM's virtual disks are experiencing high storage latency; the solution is to migrate the VMDKs to an all-flash datastore. Answer: C Explanation: %CSTP (Co-Stop) measures the time a multi-vCPU VM spends waiting for multiple physical CPU cores to become available simultaneously so they can execute instructions in sync (strict co-scheduling). A high %CSTP (generally > 3%) indicates vCPU over-provisioning. The guest OS is likely not utilizing all 16 vCPUs, but the hypervisor is still forced to schedule them all at once. The best solution is to "Right-size" the VM by reducing the vCPU count, which dramatically reduces scheduling contention. 14. You are upgrading an ESXi host in a VCF Workload Domain using vSphere Lifecycle Manager (vLCM). The remediation task fails at 14% with a generic timeout error. You SSH into the affected ESXi host to determine exactly which VIB (vSphere Installation Bundle) or driver caused the installation failure. Which log file is the primary source for troubleshooting vLCM remediation and software installation errors on an ESXi host? A. /var/log/vpxa.log B. /var/log/esxupdate.log C. /var/log/vmkernel.log D. /var/log/hostd.log Answer: B Explanation: The /var/log/esxupdate.log file records all events related to software installation, patching, and upgrades on an ESXi host. Whether the upgrade was pushed via vLCM, Update Manager (VUM), or manually via esxcli software vib install, this log will contain the exact dependency errors or conflicting VIBs that caused the remediation task to fail. PassQuestion 3V0-13.26 Practice Questions 7 / 8 15. The vCenter Server Appliance (vCSA) partition /storage/log reached 100% capacity, causing core vCenter services to crash. You have cleared some old log files via SSH to temporarily restore service, but you need to configure persistent log forwarding to a remote syslog server (such as VCF Operations for Logs) to prevent local disk exhaustion in the future. Which built-in interface is the VMware-recommended location to configure syslog forwarding for the vCSA? A. The ESXi Host Client (ESXi CLI) where the vCSA VM resides B. The vSphere Client (HTML5 UI) under vCenter Advanced Settings C. The vCenter Server Appliance Management Interface (VAMI) on port 5480 D. The esxcli system syslog command via the vCSA shell Answer: C Explanation: The vCenter Server Appliance Management Interface (VAMI), accessed via https://<vcenter-fqdn>:5480, is the administrative control panel for the appliance itself. It contains the dedicated "Syslog Configuration" menu where you can configure up to three remote syslog forwarding destinations. Modifying advanced settings in the vSphere Client configures application-level settings, not the appliance OS-level log forwarding. 3V0-13.26 VCF Support - Mock Exam Practice Set 04 Phase 1: Storage & Compute Infrastructure Difficulty: Level 2 (Directed Troubleshooting & Order of Operations) PassQuestion 3V0-13.26 Practice Questions 8 / 8