2V0-41.23 Online Practice Questions and Answers

Correct Answer: D

According to the VMware NSX Documentation4, the set auth-policy command is used to change the authentication policy settings for local users, such as password length, lockout period, and maximum authentication failures. The other commands are either used to view the authentication policy settings (B), change the CLI session timeout (A), or change the hardening policy settings ? Reference: 4: Authentication Policy Settings-VMware Docs

https://docs.vmware.com/en/VMware-NSX/4.1/administration/GUID-99BAED85-D754-4589-9050-72A1AB528C10.html

Correct Answer: BD

Two tools that are used for centralized logging in VMware NSX are Syslog Server and VMware Aria Operations for Logs. Syslog Server is a standard protocol for sending log messages from various network devices to a centralized server1. VMware NSX supports syslog for long term retention of logs and all NSX components can send syslog messages to a configured syslog server2. VMware Aria Operations for Logs is a VMware product that provides intelligent log analytics for NSX3. It provides monitoring and troubleshooting capabilities and customizable dashboards for network virtualization, flow analysis, and alerts3. The other options are incorrect because they are not tools for centralized logging in VMware NSX. VMware Aria Operations is a VMware product that provides operations management and automation for NSX4, but it is not the same as VMware Aria Operations for Logs. VMware Aria Automation is a VMware product that provides automation and orchestration for NSX5, but it is not related to logging. VMware Aria Operations for Networks is not a valid product name. References: Syslog, NSX Logging and System Events, VMware vRealize Log Insight for NSX, VMware vRealize Operations Management Pack for NSX, VMware vRealize Automation

Correct Answer: AD

AS-Path Prepend: This attribute allows you to prepend one or more AS numbers to the AS path of a route, making it appear longer and less preferable to other BGP routers. You can use this attribute to manipulate the inbound traffic from

your BGP peers by advertising a longer AS path for some routes and a shorter AS path for others .

MED: This attribute stands for Multi-Exit Discriminator and allows you to specify a preference value for a route among multiple exit points from an AS. You can use this attribute to manipulate the outbound traffic to your BGP peers by

advertising a lower MED value for some routes and a higher MED value for others .

Correct Answer: C

The insertion point for East-West network introspection is the Guest VM vNIC. Network introspection is a service insertion feature that allows third-party network services to be integrated with NSX. Network introspection enables traffic redirection from the Guest VM vNIC to a service virtual machine (SVM) that runs the partner service. The SVM can then inspect, monitor, or modify the traffic before sending it back to the original destination1. The other options are incorrect because they are not the insertion points for East-West network introspection. The Tier-0 router is used for North-South routing and network services. The partner SVM is the service virtual machine that runs the partner service, not the insertion point. The host physical NIC is not involved in network introspection. References: Network Introspection Settings

Correct Answer: D

According to the VMware NSX CLI Reference Guide, this CLI command shows the syslog messages on the NSX Manager node. You can use this command to view the system logs for troubleshooting or monitoring purposes. The other options are either incorrect or not available for this task. get log-file auth.log is a CLI command that shows the authentication logs on the NSX Manager node, not the syslog messages. /var/log/syslog/syslog.log is not a CLI command, but a file path that may contain syslog messages on some Linux systems, but not on the NSX Manager node. show log manager follow is not a valid CLI command, as there is no show log command or manager option in the NSX CLI.

## NSX Cli command get log-file get log-file follow

# Below are commonly used log files, there are many more log files get log-file [follow] # use [follow] to continuing monitor Example: get log-file syslog follow get log-file syslog

Correct Answer: B

Unicast is the traffic type that an NSX administrator should use for validating connectivity between App and DB virtual machines that reside on different segments. According to the VMware documentation1, unicast traffic is the traffic type that is used to send a packet from one source to one destination. Unicast traffic is the most common type of traffic in a network, and it is used for applications such as web browsing, email, file transfer, and so on2. To perform a traceflow with unicast traffic, the NSX administrator needs to specify the source and destination IP addresses, and optionally the protocol and related parameters1. The traceflow will show the path of the packet across the network and any observations or errors along the way3. The other options are incorrect because they are not suitable for validating connectivity between two specific virtual machines. Multicast traffic is the traffic type that is used to send a packet from one source to multiple destinations simultaneously2. Multicast traffic is used for applications such as video streaming, online gaming, and group communication4. To perform a traceflow with multicast traffic, the NSX administrator needs to specify the source IP address and the destination multicast IP address1. Broadcast traffic is the traffic type that is used to send a packet from one source to all devices on the same subnet2. Broadcast traffic is used for applications such as ARP, DHCP, and network discovery. To perform a traceflow with broadcast traffic, the NSX administrator needs to specify the source IP address and the destination MAC address as FF:FF:FF:FF:FF:FF1. Anycast traffic is not a valid option, as it is not supported by NSX Traceflow. Anycast traffic is a traffic type that is used to send a packet from one source to the nearest or best destination among a group of devices that share the same IP address. Anycast traffic is used for applications such as DNS, CDN, and load balancing.

Correct Answer: C

The log for a firewall rule on an ESXi transport node is stored in the /var/log/dfwpktlogs.log file. This file contains information about the packets that match or do not match the firewall rules, such as the source and destination IP addresses, ports, protocols, actions, and rule IDs. The log file can be viewed using the esxcli network firewall get command or the vSphere Client. https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.2/administration/GUID-D57429A1-A0A9-42BE-A299-0C3C3546ABF3.html

Correct Answer: AB

Reference: https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.2/administration/GUID-0A8BF7D8-9C2E-48A5-8219-17C00F1EC13A.html https://www.wwt.com/blog/primer-series-napp-malware-prevention

Correct Answer: D

L2 VPN is a feature of NSX that allows extending Layer 2 networks across different sites or clouds over an IPsec tunnel. L2 VPN has an advantage of enabling VM mobility with re-IP, which means that VMs can be moved from one site to another without changing their IP addresses or network configurations. This is possible because L2 VPN allows both sites to use the same broadcast domain, which means that they share the same subnet and VLAN .

Correct Answer: CD

The NSX Application Platform Deployment features are divided into three form factors: Evaluation, Standard, and Advanced. Each form factor determines which NSX features can be activated or installed on the platform1. The Evaluation form factor supports only NSX Intelligence, which provides network visibility and analytics for NSX-T environments2. The Standard form factor supports both NSX Intelligence and NSX Network Detection and Response, which provides network threat detection and response capabilities for NSX-T environments3. The Advanced form factor supports all four features: NSX Intelligence, NSX Network Detection and Response, NSX Malware Prevention, and NSX Metrics1. https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.2/nsx-application-platform/GUID-85CD2728-8081-45CE-9A4A-D72F49779D6A.html