[2022年03月22日] 心強いNCS-CoreのPDF問題集はNCS-Core問題
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質問 12
An administrator responsible for a VDI environment needs to investigate reports of slow logins.
Theadministrator finds that increasing the number of vCPUs from 2 to 4 will reduce the login times.
Production workloads are consuming 75% of the host CPU on the cluster. The administrator increases the vCPU count on all of the VDI VMs.
What are two impacts on the cluster? (Choose two.)
- A. Increase CPU utilization%
- B. Increasing CPU counts will decrease memory utilization
- C. Increase memory utilization%
- D. Increase CPU ready%
正解: A,D
質問 13
An administrator is performing a set of routine checks and notes that Prism Central is running with 4 vCPUs and 21 GB RAM. The organizations environment is based on two Nutanix clusters with 170 VMs plus a Legacy vSphere infrastructure. No manual changes have been done on Prism Central VM.
Which configuration justifies the current Prism Central configuration?
- A. Prism Central was installed for Large Deployment environments.
- B. Nutanix Leapand Nutanix Flow have been enabled on Prism Central
- C. Prism Central is running on the legacy duster and requires more RAM.
- D. Nutanix Move is running on Prism Central to import VMs from the Legacy Cluster.
正解: B
質問 14
An administrator is supporting a business critical environment and deploys metro availability to achieve a zero data loss configuration. The two clusters are connected by a 1GbE connection. A new workload is going to be deployed to this cluster. This workload requires a sustained 150MB/S of write throughput and 20MB/s of read throughput.
Which change must be made to deploy the workload successfully on this cluster?
- A. The replication frequency must be less than 60 minutes.
- B. The workload must be configured to read at greater than 12.5MB/S.
- C. Zero data loss nearsync must be used to support this workload.
- D. The bandwidth must be increased tosupport this workload.
正解: D
解説:
Explanation
Ref:
質問 15
After a consultant runs Foundation, the imaging process fails.
In which two locations can the consultant find the logs? (Choose two.)
- A. On the Foundation VM - /home/nutanix/foundation/logs
- B. On the Hypervisor - /home/nutanix/foundation/logs
- C. On the CVM - /home/Nutanix/foundation/logs
- D. Logs link on the Foundation Imaging Screen
正解: A,D
質問 16
An administrator receives an alert in Prism indicating that interface eth2, on an AHV host is receiving many CRC errors. Aftertogging into the problematic host, the following command is run to show the indicated output:
What is causing this issue?
- A. A physical layer network problem
- B. Incorrect link speeds on the switch
- C. The interface is incorrectly configured with Jumbo Frames
- D. A misconfigured bond
正解: C
解説:
Explanation
Ref:
rx_crc_errors are caused either by faults in layer 1 (in the past, we have seen failed twinax cables and incorrect types of fibre being used), or issues with jumbo frames on the network. In an environment with
10Gig switches that use cut-through forwarding (Cisco Nexus, Arista, Cisco devices using IOS default to Store and Forward switching), any packets that come into the switch will get forwarded out the destination interface once the switch has read the destination MAC address. If that packet has an MTU over what is configured on the interface, it will cut off the packet at the designated MTU, causing the server to receive a malformed packet, which will throw a CRC error.
If you have a layer 1 issue, you will see not on all but one or two nodes.
質問 17
An administrator is updating disk firmware using LCM and receives the following message:
"there have been 10 or more cluster services restarts within 15 minutes in the Controller VM" The message appears as each drive is upgraded.
What is the reason this message isbeing generated?
- A. A drive has been ejected
- B. A node has been rebalanced
- C. A drive has been reformatted
- D. A node has been rebooted
正解: D
解説:
Explanation
Ref: https://portal.nutanix.com/page/documents/kbs/details?targetId=kA032000000TT8DCAW
質問 18
Refer to the exhibit.
An administrator logged into Prism Element, notices the following in the home dashboard, and showing the exhibit.
Which action should the administrator take next?
- A. Troubleshoot the zookeeper server issue
- B. Check the hardware page for disk failures
- C. Configure the fqdn for the hosts indicated
- D. Re-run NCC specifying data_resiliency_check
正解: D
質問 19
What is the minimum number of nodes required for a Nutanix Cluster to support Replication Factor 3 (RF3) on a storage container?
- A. 0
- B. 1
- C. 2
- D. 3
正解: B
質問 20
An administrator is deploying several new application VMs to a Nutanix cluster. The application is very transactional with a 28/72 random, read/write ratio.
What should the administrator do?
- A. Add one large virtual disk to each VM. and use it for all application data.
- B. Add a minimum of four SSDs to each node toensure all writes go to the SSDs.
- C. Add a minimum of four virtual disks to each VM, and aggregate them on guest OS level.
- D. Add one large SSD to each node and enable Flash Mode for the VMs.
正解: C
解説:
Explanation
Ref:https://next.nutanix.com/server-virtualization-27/iops-latency-issue-1168
質問 21
An administrator wants to utilize Network Visualization to monitor the physical and logical network on the Nutanix cluster. The first-hop switch has LLDP enabled. The network switch informationis still not being displayed.
What is causing this problem?
- A. The cluster is using RDMA-enabled NICs.
- B. br0 and br1 are not defined.
- C. The ISL between switches is not configured.
- D. SNMP is not configured properly.
正解: D
解説:
Explanation
ref:https://portal.nutanix.com/page/documents/details?targetId=Web-Console-Guide-Prism-v55:wc-network-visu
質問 22
A consultant creates an AHV cluster and connects the Intel X550T NICs to the top of rack switch using Twinax cables. The activity and link lights are green. The cluster cannot communicate over the 10GbE link.
What is the first command the consultant should perform to troubleshoot the issue?
- A. manage_ovs show_bridges
- B. manage_ovs update_uplinks
- C. manage_ovs show_uplinks
- D. manage_ovs show_interfaces
正解: A
質問 23
A customer wants to know the details of network validation testing.
Where can the consultant find this information?
- A. Handover checklist
- B. Operations Guides
- C. Test plan
- D. As-Built Guide
正解: A
質問 24
Microsegmentation was recently enabled in a Nutanix environment. The administrator wants to leverage Prism Central to create a policy that will block all traffic, regardless of direction, between two groups of VMs identified by their category.
Which policy should be used to meet this requirement?
- A. An Application Security Policy
- B. AnIsolation Environment Policy
- C. A Quarantine Policy
- D. A Whitehst-Based Policy
正解: B
解説:
質問 25
To prepare for a new Nutanix installation, a consultant downloads the Foundation VM, imports the VM to their Desktop Virtualization Solution, and powers on the VM. The IPv4 static address on the host workstation and the Foundation VM have been configured, but pings between them fail.
Which two troubleshooting steps should the consultant perform? (Choose two.)
- A. Verify the virtual NIC in the Foundation VM is bound to the correct physical Host adapter.
- B. Verify the virtual NIC in the Foundation VM is bound to the correct wireless network adapter.
- C. Remove and re-import the Foundation VM to ensure the virtual NIC is set to Host-Only.
- D. Confirm the IP addresses and subnet masks are correct.
正解: A,D
質問 26
A consultant deploys a four-node VMware ESXi cluster and vCenter server. An HA/DRS cluster is configured for all four nodes. The customer deploys five new VMs on the cluster.
During the knowledge Transfer, a network cable on one node is removed to demonstrate HA and migration of the VMs to another host. In the HA/DRS cluster settings, the VM Restart Priority for all CVMs is set to Disabled. The customer observes warnings that the CVM on the ejected host is no longer powered on.
Which ESXi HA/DRS cluster setting is missing?
- A. Enable EVC for the cluster.
- B. Enable Host Monitoring.
- C. Disable VM Monitoring on all CVMs.
- D. Disable Automation Level on all CVMs.
正解: D
質問 27
An administrator finds that home shares cannot be configured in a new Files 3.5 deployment. Why is this happening?
- A. NFS default access is set to Read Only.
- B. Access Based Enumeration is not enabled.
- C. Multi-protocolaccess is not configured.
- D. The system is deployed as a single FSVM.
正解: D
解説:
質問 28
A CEO asks the IT administrator to provide a list of required resources to protect current workloads and the two new SQL servers from a disaster. The Nutanix environment is managed by Prism Central.
Which option explains how to meet the CEO's request?
- A. Create a new scenario based on a new cluster based on a VM Profile and select Recommend.
- B. Create a new Recovery policy by selecting the VM that needs to be protected and get hardwarerequirements.
- C. Create a new project and assign theVMs to it to get compute and storage requirements.
- D. In Capacity Runway, select Optimize Resources and select all VMs that must be protected.
正解: B
質問 29
A Nutanix cluster is deployed with the following configuration:
* Three four-nodeblocks (A, B, and C)
* All Flash Redundancy Factor 2
What is the effect of simultaneous disk failures on two nodes located in block A?
- A. Each node with a failed disk is marked as degraded.
- B. VM read and write operations continue normally.
- C. VMs on the nodes with failed disks are unable to write data
- D. VMs are migrated off of the nodes with disk failures.
正解: B
解説:
Explanation
Ref:https://next.nutanix.com/how-it-works-22/redundancy-factor-vs-replication-factor-37486
質問 30
A consultant is planning an installation and needs to collect configuration items to be used during the install.
The data needed from the customer are IP addresses, Gateway, DNS servers, and NTP Servers.
Which Cluster Deployment document must be completed with the customer?
- A. Project Plan
- B. Operations Guide
- C. Technical Checklist
- D. Questionnaire
正解: C
質問 31
An administrator is managing multiple Windows and Linux VMs connected to Nutanix Volumes. The Linux VMs are experiencing intermittent connectivity issues. The Windows VMs do not experience the same issue.
Which option should the administrator use to resolve this issue?
- A. Set the SCSI timeout value to 60
- B. Add additional disks to the Volume Group
- C. Utilize a separate subnet for the Linux VMs
- D. Utilize Jumbo Frames
正解: A
解説:
Explanation
Ref:https://kb.vmware.com/s/article/1009465
質問 32
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