NCS-Core Dumps To Pass NCS Professional Exam in One Day (Updated 195 Questions)
NCS-Core Exam Brain Dumps - Study Notes and Theory
NEW QUESTION 94
An organizations Nutanix Cluster is based on VMware vSphere. The cluster is configured to download software updates automatically. The administration needs to verify and eventually upgrade VMware hypervisor via Prism Ul.
After logging in to Prism, the administrator receives the message shown:
No available versions for upgrade
What is causing the current state?
- A. vSphere binaries need to be manually uploaded.
- B. VMware support has expired, so downloads are not available.
- C. The environment is running the latest vSphere version, so no update is required.
- D. The cluster is unable to connect to reIease-api.nutanix-ccm:8D.
Answer: C
Explanation:
Explanation
ref:https://portal.nutanix.com/page/documents/details?targetId=Web-Console-Guide-Prism-v510:upg-hypervisor
NEW QUESTION 95
A guest VM is reported to have poor storage performance. It has an I/O profile of 80%read. 20% write, and the HDDs form more than 50% of the read source.
What should an administrator do to resolve this issue?
- A. Increase SSD capacity
- B. Use HDDs with higher RPM
- C. Increase the write cache
- D. Increase the OPLOG
Answer: A
Explanation:
Explanation
Ref:
https://portal.nutanix.com/page/documents/solutions/details?targetId=BP-2126-SAS-on-Nutanix:BP-2126-SAS-o
NEW QUESTION 96
An administrator is planning to deploy a Nutanix cluster to support a few high-performance VMs. This deployment will have the followingconsiderations:
* Individual VMs will likely generate network throughputs in the range of 90-100Mbps
* Due to the configuration of the VMs, it is unlikely that a node will host more than one or two of them at a time
* Individual VMs will communicatewith only a few (one or two) remote hosts at a time
* Multicast will not be used in the environment
* The hosts are connected via two 1GbE network connections
How should the administrator configure the network bonds to meet this requirement while maintaining the simplest switch configuration?
- A. Configure bond0 as active-backup
- B. Configure bond0 as balance-lacp
- C. Configure bond0 as balance-tcp
- D. Configure bond0 as balance-sib
Answer: D
Explanation:
Explanation
Ref:https://portal.nutanix.com/page/documents/solutions/details?targetId=BP-2071-AHV-Networking:top_ahv_n
NEW QUESTION 97
Refer to the exhibit.
A Microsoft SQL 2016 deployment is shown in the exhibit. The administrator receives user reports that database queries take too long to return.
Which optimization should be made to this configuration to improve performance?
- A. Add a second SCSI controller for the Database.
- B. Configure the VM to use a PCI disk controller
- C. Combine both of the OS and SQL Binaries disks
- D. TempDB, andLogs disk Separate the Database. TempDB, and Logs onto their own disks
Answer: D
NEW QUESTION 98
During a technical call with a customer, it is identified that this installation will be software only on Dell servers. The out-of-band management interfaces will not be given IP addresses until the consultant is onsite.
Which Foundation method should be used for this type of installation?
- A. Bare metal using node serial numbers.
- B. Bare metal using iDRAC MAC addresses.
- C. Bare metal using LAN MAC addresses.
- D. Bare metal using block serial numbers.
Answer: B
NEW QUESTION 99
A consultant configures an ESXi cluster which will utilize a vSphere Distributed Switch (vDS). The consultant has just migrated the first host to the dvSwitch when several alerts appear within Prism Element regarding Host-to-CVM connectivity.
What is causing these alerts?
- A. The consultant migrated the CVM Backplane network adapter over to the vDS.
- B. VLAN tags are incorrectly configured on the vDS port groups.
- C. The consultant migrated the CVM Backplane and VM network adapter over to the vDS.
- D. The consultant migrated the CVM svm-iscsi-pg network adapter over to the vDS.
Answer: A
NEW QUESTION 100
After finishing foundation on an AHV cluster, a consultant is preparing to plug into the customer network given the following set of requirements:
* All network traffic on trunks is tagged
* Customer is using LACP
* A native VLAN is not in use
Which set of commands should the consultant use to ensure cluster connectivity on customer equipment?
- A. change_cvm_vlan 0
ovs-vsctl set port br0 tag=0
ovs-vsctl set port br0-up bond_mode=balance-tcp - B. change_cvm_vlan 10
ovs-vsctl set port br0 tag=10
ovs-vsctl set port br0-up bond_mode=balance-slb - C. change_cvm_vlan 10
ovs-vsctl set port br0 tag=10
ovs-vsctl set port br0-up bond_mode=balance-tcp - D. change_cvm_vlan 0
ovs~vsctl set port br0 tag=0
ovs~vsctl set port br0-up bond_mode=active-backup
Answer: A
NEW QUESTION 101
A customer has a Nutanix cluster with 10Gb connectivity via switch fabric extenders. The administrator receives NCC health check errors of latency greater than 200ms.
Which action should the administrator take to resolve the NCC errors?
- A. Replace the switch fabric extenders with 10G line rate switches
- B. Add 2 additional 10G uplinks from the switch fabric extendersper node
- C. Upgrade NCC and increase the vCPU of the CVM
- D. Upgrade NCC and increase the CVM memory by 4Gb
Answer: A
Explanation:
Explanation
Ref:https://portal.nutanix.com/page/documents/details?targetId=System-Specs-G6-Single-Node:set-block-conne
NEW QUESTION 102
A consultant is setting up a new Hyper-V cluster. The customer requirements are as follows:
* VMs should automatically failover to another host if the host crashes
* Host CPU and Memory resources should be evenly balanced
* New VMs should be placed on the host with the most resources available Which two Hyper-V features can be used to meet the requirements? (Choose two.)
- A. Distributed Resource Scheduler
- B. Performance Resource Optimization
- C. Failover Clustering
- D. High Availability
Answer: B,C
NEW QUESTION 103
A customer has NearSync configured. When the administrator tries to restore a snapshot from 3 minutes ago, it is not available. The snapshots are happening at15-minute intervals instead of at the 5-minute configured interval. When the protection domain was initially set up, the snapshots were happening at the expected
5-minute interval.
What should the customer do to enable the snapshots to happen at the expected interval?
- A. Change the protection domain to use Async DR
- B. Utilize Metro Availability to meet this requirement
- C. Configure the protection domain to take snapshots on15-minute intervals
- D. Fix a connectivity issue because the protection domain reverted to Async
Answer: D
NEW QUESTION 104
A consultant is running Foundation. The cluster creation fails during the process. The host logs confirm that the nodes have been successfully imaged. The consultant decides to create the cluster manually.
Which command should the consultant use?
- A. cluster -c IP_CVM_A, IP_CVM_B, IP_CVM_n
- B. cluster -s IP_CVM_A, IP_CVM_B, IP_CVM_n create_manual
- C. cluster create -s IP_CVM_A, IP_CVM_B, IP_CVM_n
- D. cluster -s IP_CVM_M, IP_CVM_B, IP_CVM_n create
Answer: C
NEW QUESTION 105
For a new AHV cluster installation, a customer has 20 NX-8155-G6 nodes with quad port SFP NICs.
The customer wants to meet the following guidelines:
* Take advantage of all available 10GbE links
* Achieve maximum throughput per VM
* Use of redundant ToR switches
* Fastest reconvergence during link failure
How should the load balancing be configured on the host?
- A. ovs-vsctl set port br0-up bond_mode=balance-slb
ovs-vsctl set port br0-up other_config:bond-rebalance-interval=30000
ovs-vsctl set port br0 tag=10 - B. ovs-vsctl set port br0-up bond_mode=active-backup
ovs-vsctl set port br0-up other_config:bond-rebalance-interval=30000 - C. ovs-vsctl set port br0-up other_config:lacp-fallback-ab=true
ovs-vsctl set port br0-up lacp=active
ovs-vsctl set port br0-up bond_mode=balance-tcp - D. ovs-vsctl set port br0-up bond_mode=balance-slb
Answer: A
NEW QUESTION 106
During a six-node cluster deployment, one node fails to image successfully and Foundation is unable to automatically configure the cluster. The consultant decides to manually complete cluster formation with the successful nodes, then expand the cluster with the remaining unconfigured node.
Which command should be used to begin the process?
- A. cluster status
- B. cluster create
- C. cluster start
- D. cluster expand
Answer: B
NEW QUESTION 107
A customer has engaged a Nutanix consultant to deploy a cluster consisting of two NX-3460-G6 blocks. The consultant arrives at the customer site and fines the following:
* One rack with a total of 5U available
* Two ToR switches with 14 total available ports
* Dual PDUs with six available sockets
What will prevent the consultant from successfully installing the cluster?
- A. Insufficient network ports for communication.
Insufficient sockets for power allocation. - B. Insufficient sockets for power allocation.
Rack space may not be continuous. - C. Insufficient rack space for block installation.
Insufficient sockets for power allocation. - D. Insufficient network ports for communication.
Rack space may not be continuous. - E. Insufficient network ports for communication.
Insufficient sockets for power allocation.
Answer: C
NEW QUESTION 108
An administrator receives reports that VDI desktop performance in an 8-nodeNutanix VDI environment is poor. Opening applications takes between 1 and 2 minutes.
When investigating the issue, the following conditions are found:
* Cluster memory utilization: 80%
* Cluster SSD utilization: 70%
* Average VM CPU Wait Time: 11%
*CVM CPU utilization: 75%
Which action should be taken to improve VDI performance?
- A. Increase the amount of SSD storage in the cluster.
- B. Add memory to the nodes in the cluster.
- C. Increase the number of vCPU cores allocated to the CVM.
- D. Add CPU resources to the cluster.
Answer: D
NEW QUESTION 109
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 misconfigured bond
- B. A physical layer network problem
- C. The interface is incorrectly configured with Jumbo Frames
- D. Incorrect link speeds on the switch
Answer: C
Explanation:
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.
NEW QUESTION 110
An administrator migrates a VM onto a new Nutanix cluster. After the migration, the administrator observes the following conditions:
* Cluster memory utilization: 64%
* Cluster CPU utilization: 19%
* Clusterstorage utilization: 32%
* Average VM CPU utilization: 25%
* Average VM CPU ready%: 24%
* Average VM memory utilization: 60%
Which two changes should the administrator make to improve VM performance? (Choose two.)
- A. Add more memory to the VMs.
- B. Reduce the number of VMs on the hosts.
- C. Replace high core count CPUs with high clock rate CPUs. (also can be but is physical invas)
- D. Reduce the number of vCPUs assigned to VMs.
Answer: B,D
Explanation:
Explanation
refhttp://www.joshodgers.com/tag/cpu-ready/
NEW QUESTION 111
A consultant is unable to install virtualization software on a laptop.
Which two versions of Foundation can be used to resolve this issue? (Choose two.)
- A. Foundation Central
- B. Foundation VM
- C. Foundation Applet
- D. Foundation Portable
Answer: C,D
NEW QUESTION 112
A customer wants to know the details of network validation testing.
Where can the consultant find this information?
- A. Test plan
- B. Handover checklist
- C. As-Built Guide
- D. Operations Guides
Answer: B
NEW QUESTION 113
Anadministrator is notified that a bare metal database server is down. This database server is being served storage using a Nutanix Volume Group. Upon investigating, the administrator finds that the disks in the database server that map to the vDisks in thevolume group have gone offline.
What is causing this issue?
- A. A CVM serving the Volume Group has gone offline.
- B. Port 9443 is blocked in the server firewall.
- C. Port 3260 has been blocked in the server firewall.
- D. The Volume Group Load Balancer has been disabled.
Answer: A
NEW QUESTION 114
Refer to the exhibit.
An administrator configures ActiveDirectory authentication as shown in the exhibit. Upon finishing setup, users are not able to log in.
What configuration change should be made to fix this issue?
- A. Change the Directory URL to use an IP rather than a name
- B. Change leaps to https
- C. Changethe plct from 389 to 636
D Change the Domain to use an IP rather than a name
Answer: C
Explanation:
Explanation
Ref:https://portal.nutanix.com/page/documents/details?targetId=Prism-Central-Guide-Prism-v510:mul-security-a
NEW QUESTION 115
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. VMs are migrated off of the nodes with disk failures.
- B. Each node with a failed disk is marked as degraded.
- C. VM read and write operations continue normally.
- D. VMs on the nodes with failed disks are unable to write data
Answer: C
Explanation:
Explanation
Ref:https://next.nutanix.com/how-it-works-22/redundancy-factor-vs-replication-factor-37486
NEW QUESTION 116
A customer wants to expand an existing cluster with three additional nodes. After running the Foundation process on the new nodes, the customer realizes that the wrong IPs where used and the nodes are configured on a different network. The customer decides to create a new cluster instead.
Which method should be used to recreate the cluster?
- A. Log into Hypervisor and use cluster create command to create the cluster.
- B. Foundation all nodes again and create the cluster.
- C. Log into CVM and use cluster create command to create the cluster.
- D. Log into IPMI and use cluster create command to create the cluster.
Answer: C
NEW QUESTION 117
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