Nutanix NCP-DB Certification Exam Sample Questions

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Nutanix NCP-DB Sample Questions:

01. A MongoDB database server VM was registered with NDB and has never been patched through NDB. When the administrator clicks Update on its Software Profile Version widget, NDB asks for a software profile as well as a version, whereas for a server NDB has already patched it asks only for the version.
What explains the difference?
a) NDB has not yet patched this registered server, so its first NDB patch must name the software profile as well as the version
b) The server's software profile was deprecated, so NDB asks for a replacement profile
c) The server belongs to no maintenance window, so NDB asks which profile a window would use
d) Registered servers can be patched only from unpublished versions, which are picked by profile
 
02. An administrator is adding a second Nutanix cluster to an NDB instance that currently manages a single cluster.
Which sequence is correct?
a) Enter cluster details and Verify → Enable multi-cluster → Configure the agent VM → Select the storage container → Register
b) Enable multi-cluster → Enter cluster details and Verify → Select the storage container → Configure the agent VM → Register
c) Enable multi-cluster → Configure the agent VM → Enter cluster details and Verify → Select the storage container → Register
d) Enable multi-cluster → Enter cluster details and Verify → Configure the agent VM → Select the storage container → Register
 
03. An administrator has chosen the offline upgrade method for an NDB server.
Which sequence follows the offline upgrade procedure?
a) Download the bundle from the Support portal → Select the version on the Maintenance page and click Upgrade Now → Copy it to the NDB server → Run the bundle upload in the NDB CLI
b) Download the bundle from the Support portal → Copy it to the NDB server → Run the bundle upload in the NDB CLI → Select the version on the Maintenance page and click Upgrade Now
c) Download the bundle from the Support portal → Run the bundle upload in the NDB CLI → Copy it to the NDB server → Select the version on the Maintenance page and click Upgrade Now
d) Download the bundle from the Support portal → Copy it to the NDB server → Select the version on the Maintenance page and click Upgrade Now → Run the bundle upload in the NDB CLI
 
04. A PostgreSQL VM due to be registered with NDB 2.10 runs an engine version whose vendor support has ended. The DBA asks whether NDB will support it.
Which approach follows NDB's documented support policy?
a) Register it, then patch it outside NDB
b) Upgrade the engine to a version the NDB release notes list, then register it
c) Register it as is, with NDB keeping support for any version that an earlier NDB release supported
d) Register it with a deprecated software profile that makes NDB tolerate the older engine version
 
05. An NDB deployment runs version 2.6, and the administrator wants to reach NDB 2.10.
What must the administrator confirm and do before the 2.10 upgrade can start?
a) That the offline method is used, since it allows skipping any intermediate versions
b) That 2.7 is installed first
c) That a control plane backup exists, after which 2.6 can go straight to 2.10
d) That 2.10 accepts only 2.8.x or later, so upgrade to 2.8.x first
 
06. NDB manages an AHV cluster and an ESXi cluster with multi-cluster enabled. A PostgreSQL software profile built from a RHEL 8 database server VM on the AHV cluster must also serve provisioning on the ESXi cluster, but NDB rejects the attempt to extend the profile to the ESXi cluster.
What should the DBA do?
a) Add a stretched VLAN across both clusters, then retry
b) Create a separate software profile on the ESXi cluster from a registered RHEL 8 PostgreSQL VM there
c) Install NGT on the source VM, then repeat the request for the ESXi cluster
d) Publish the profile version, then repeat the request for the ESXi cluster
 
07. Provisioning a MongoDB database server VM on Rocky Linux 9.4 fails every time with a software profile built from a minimal gold image. This is a documented issue for MongoDB on Rocky Linux 9.4 and RHEL 9.4 when the initscripts package is not installed.
Where should the fix be applied so that later provisioning succeeds?
a) Through a custom OS patching command that installs initscripts after provisioning
b) On each failed VM, by installing initscripts and resubmitting the operation there
c) In the gold image VM, by installing initscripts
d) In the compute profile, by choosing a larger vCPU and memory size for Rocky Linux 9.4
 
08. The administrator who completed the first sign-in to NDB has left the company, and nobody knows the password set for the admin user. The team still has SSH access to the NDB VM with the era account.
How should the admin user password be reset?
a) Redeploy the NDB VM to bring back the prompt that sets the first sign-in password
b) SSH to the NDB VM and run sudo passwd era to set a new GUI password
c) SSH to the NDB VM, enter era-server and then run security password reset
d) Log on to the NDB VM as root and edit the admin user in the repository
 
09. The NDB server VM sits in a firewalled management subnet, and database server VMs will use volume groups attached over iSCSI. The firewall team has opened TCP 3205 and 3260 from the NDB server to the Data Services IP (DSIP) of the cluster only, and a design review must confirm the rule set before deployment.
What must be added?
a) TCP 2009 and 2020 to every CVM to carry the iSCSI data path
b) TCP 9440 to the DSIP so that iSCSI sessions are negotiated through the Prism REST port
c) TCP 22 to every CVM so that NDB can attach volume groups over SSH
d) TCP 3205 and 3260 to the cluster virtual IP and to every CVM as well
 
10. User A, a database infrastructure administrator, creates a PostgreSQL software profile on cluster 1. User B, a DBA without the Super Admin role, provisions on the same cluster but cannot use the profile, although the profile creation operation succeeded.
Which configuration should be reviewed first?
a) Whether user B's role has the Create Profile privilege needed to provision with any profile
b) The profile version status, because unpublished profiles created by another user cannot be used in provisioning
c) Whether a DAM policy makes the profile available to user B on cluster 1
d) Whether an entity sharing policy gives user B Use access to the profile

Answers:

Question: 01
Answer: a		 Question: 02
Answer: d		 Question: 03
Answer: b		 Question: 04
Answer: b		 Question: 05
Answer: d
Question: 06
Answer: b		 Question: 07
Answer: c		 Question: 08
Answer: c		 Question: 09
Answer: d		 Question: 10
Answer: b

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