5V0-41.21 Exam Questions and Answers

QUESTION: 11

An NSX administrator has turned on logging for the distributed firewall rule. On an ESXi host, where will the logs be stored?

/var/log/esxupdate.log
/var/log/dfwpktlogs.log
/var/log/hostd.log
/var/log/vmkerntl.log

Answer(s): B

Explanation:

The NSX administrator has enabled logging for the distributed firewall rule, and the logs are stored in the /var/log/dfwpktlogs.log file on the ESXi host. This log file stores the packet logs for the distributed firewall rules, and the logs can be used for auditing and troubleshooting the distributed firewall.

Reference:

https://docs.vmware.com/en/VMware-NSX-T-Data- Center/2.5/nsxt_25_admin_guide/GUID-E0CC7D8A-F9E6-4A6F-A6F8-6A3D7B3DC3EF.html#GUID- E0CC7D8A-F9E6-4A6F-A6F8-6A3D7B3DC3EF

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QUESTION: 12

A Security Administrator needs to update their NSX Distributed IDS/IPS policy to detect new attacks with critical CVSS scoring that leads to credential theft from targeted systems.
Which actions should you take?

· Update Distributed IDS/IPS signature database
· Edit your profile from Security > Distributed IDS > Profiles · Select Critical severity, filter on attack type and select Successful Credential Theft Detected · Check the profile is applied in Distributed IDS rules
· Edit your Distributed IDS rule from Security > Distributed IDS/IPS > Rules · Filter on attack type and select Successful Credential Theft Detected · Update Mode to detect and prevent
· Click on gear icon and change direction to OUT
· Create a new profile from Security > Distributed IDS > Profiles · Select Critical severity, filter on attack type and select Successful Credential Theft Detected · Check the profile is applied In Distributed IDS rules · Monitor Distributed IDS alerts to validate changes are applied
· Edit your Distributed IDS rule from Security > Distributed IDS/IPS > Rules · Filter on attack type and select Successful Credential Theft Detected · Update Mode to detect and prevent
· Click on gear icon and change direction to IN-OUT

Answer(s): A

Explanation:

https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.1/nsxt_31_ids_ips/GUID-B2D6A7F6-

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QUESTION: 13

Which is an insertion point for East-West service insertion?

tier-1 gateway
Partner SVM
Guest VM vNlC
transport node

Answer(s): C

Explanation:

East-West service insertion refers to the ability to insert security services, such as firewall and intrusion detection and prevention, between virtual machines (VMs) that are communicating within the same logical network.
One of the insertion points for East-West service insertion is the virtual network interface card (vNIC) of the guest VM. The vNIC is the virtual representation of a physical NIC on a VM, and it connects the VM to the virtual network. By inserting security services at the vNIC level, traffic between VMs can be inspected and secured before it reaches the virtual switch.

VMware NSX-T Data Center documentation https://docs.vmware.com/en/VMware-NSX-T-Data- Center/index.html
VMware NSX-T Data Center Security documentation https://docs.vmware.com/en/VMware-NSX-T- Data-Center/3.1/com.vmware.nsxt.security.doc/GUID-8F7C8B70-F1A6-4F31-8D6C- A0A9B9C9A9D3.html

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QUESTION: 14

An NSX administrator has been tasked with configuring a remote logging server (192.168.110.60) to send FW connections and packets logs to a remote logging server. The administrator is using this command syntax found in the NSX-T 3.1 documentation:

Which of the following commands does the administrator use to complete the configuration task?

set logging-server 192.168.110.60 proto udp level info facility syslog message Id FIREWALL- CONNECTION
set logging-server 192.168.110.60 proto udp level info facility syslog message!- monitor.
Firewall
set logging-server 192.168.110.60 proto udp level info facility syslog message Id FIREWALL- PKTLOG
set logging-server 192.168.110.60 proto udp level info facility syslog message Id system, fabric

Answer(s): C

Explanation:

The administrator is using the command syntax found in the NSX-T 3.1 documentation to configure a remote logging server to send firewall connections and packets logs. In order to complete the configuration task, the administrator needs to use the correct options for the command.

The options used in the command are:
logging-server: This option specifies the IP address or hostname of the remote logging server. In this case, the IP address of the remote logging server is 192.168.110.60. proto: This option specifies the protocol to be used to send the logs to the remote server. In this case, the protocol used is UDP.
level: This option specifies the level of logging to be sent to the remote server. In this case, the level of logging is "info"
facility: This option specifies the facility to be used for syslog messages. In this case, the facility used is "syslog"
message Id: This option specifies the message Id that will be used for the logs. In this case, the message Id used is "FIREWALL-PKTLOG"

Reference:

VMware NSX-T Data Center documentation https://docs.vmware.com/en/VMware-NSX-T-Data- Center/index.html
VMware NSX-T Data Center Logging documentation https://docs.vmware.com/en/VMware-NSX-T- Data-Center/3.1/com.vmware.nsxt.logging.doc/GUID-2B9E9F8D-6CA9-4A1E-B7B1- 8B8C7F0C2B2E.html

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QUESTION: 15

Which dot color indicates an on-going attack of medium severity in the IDS/IPS events tab of NSX-T Data Center?

blinking yellow dot
solid red dot
solid orange dot
blinking orange dot

Answer(s): C

Explanation:

The dot color that indicates an on-going attack of medium severity in the IDS/IPS events tab of NSX-T Data Center is a solid orange dot. This indicates that the attack has been detected and is ongoing at a medium severity level.

Reference:

https://docs.vmware.com/en/VMware-NSX-T-Data-

Center/3.1/nsxt_31_admin_guide/GUID-A8FAC8A1-F9F9-43EC-A822-F2F2CB5C5E5A.html#GUID- A8FAC8A1-F9F9-43EC-A822-F2F2CB5C5E5A
In the IDS/IPS events tab of NSX-T Data Center, different colors of dots are used to indicate the severity of an attack.
A solid red dot indicates a critical attack, which is the highest severity level. A solid orange dot indicates a medium attack, which is a moderate severity level. A solid yellow dot indicates a low attack, which is the lowest severity level. In this case, a solid orange dot is used to indicate an on-going attack of medium severity in the IDS/IPS events tab of NSX-T Data Center.
It's worth noting that there is no blinking dots in this context, all the dots are solid.

VMware NSX-T Data Center documentation https://docs.vmware.com/en/VMware-NSX-T-Data-

Center/index.html
VMware NSX-T Data Center Intrusion Detection and Prevention documentation https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.1/com.vmware.nsxt.ids.doc/GUID- C4ED1F4D-4E4B-4A9C-9F5C-7AC081A5C5D5.html

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VMware 5V0-41.21 Exam (page: 3) VMware NSX-T Data Center 3.1 Security Updated on: 12-Feb-2026

QUESTION: 11

Explanation:

Reference:

QUESTION: 12

Explanation:

QUESTION: 13

Explanation:

QUESTION: 14

Explanation:

Reference:

QUESTION: 15

Explanation:

Reference:

VMware 5V0-41.21 Exam (page: 3)
VMware NSX-T Data Center 3.1 Security
Updated on: 12-Feb-2026