VMware VMware Certifications 2V0-41.23 Questions & Answers

• Question 41:

  Which CLI command would an administrator use to allow syslog on an ESXi transport node when using the esxcli utility?

  A. esxcli network firewall ruleset set-r syslog-e true

  B. esxcli network firewall ruleset-e syslog

  C. esxcli network firewall ruleset set-r syslog-e false

  D. esxcli network firewall ruleset set-a-e false

  Correct Answer: A

  To allow syslog on an ESXi transport node, the administrator needs to use the esxcli utility to enable the syslog ruleset in the ESXi firewall. The correct syntax for this command is esxcli network firewall ruleset set-r syslog-e true, where-r specifies the ruleset name and-e specifies whether to enable or disable it. The other options are incorrect because they either use an invalid syntax, such as omitting the ruleset name or using-a instead of-r, or they disable the syslog ruleset instead of enabling it, which is the opposite of what the question asks. References: [ESXi Firewall Command-Line Interface], [Configure Syslog on ESXi Hosts]

• Question 42:

  A security administrator needs to configure a firewall rule based on the domain name of a specific application.

  Which field in a distributed firewall rule does the administrator configure?

  A. Profile

  B. Service

  C. Policy

  D. Source

  Correct Answer: A

  To configure a firewall rule based on the domain name of a specific application, the administrator needs to use the Profile field in a distributed firewall rule. The Profile field allows the administrator to select a context profile that contains one or

  more attributes for filtering traffic. One of the attributes that can be used is Domain (FQDN) Name, which specifies the fully qualified domain name of the application. For example, if the administrator wants to filter traffic to *.office365.com,

  they can create a context profile with the Domain (FQDN) Name attribute set to *.office365.com and use it in the Profile field of the firewall rule.

  References:

  Filtering Specific Domains (FQDN/URLs)

  FQDN Filtering

• Question 43:

  Which three of the following describe the Border Gateway Routing Protocol (BGP) configuration on a Tier-0 Gateway? (Choose three.)

  A. Can be used as an Exterior Gateway Protocol.

  B. It supports a 4-byte autonomous system number.

  C. The network is divided into areas that are logical groups.

  D. EIGRP Is disabled by default.

  E. BGP is enabled by default.

  Correct Answer: ABD

  A. Can be used as an Exterior Gateway Protocol. This is correct. BGP is a protocol that can be used to exchange routing information between different autonomous systems (AS). An AS is a network or a group of networks under a single administrative control. BGP can be used as an Exterior Gateway Protocol (EGP) to connect an AS to other ASes on the internet or other external networks1

  B. It supports a 4-byte autonomous system number. This is correct. BGP supports both 2-byte and 4-byte AS numbers. A 2-byte AS number can range from 1 to 65535, while a 4-byte AS number can range from 65536 to 4294967295. NSX supports both 2-byte and 4-byte AS numbers for BGP configuration on a Tier-0 Gateway2 C. The network is divided into areas that are logical groups. This is incorrect. This statement describes OSPF, not BGP. OSPF is another routing protocol that operates within a single AS and divides the network into areas to reduce routing overhead and improve scalability. BGP does not use the concept of areas, but rather uses attributes, policies, and filters to control the routing decisions and traffic flow3 D. FIGRP Is disabled by default. This is correct. FIGRP stands for Fast Interior Gateway Routing Protocol, which is an enhanced version of IGRP, an obsolete routing protocol developed by Cisco. FIGRP is not supported by NSX and is disabled by default on a Tier-0 Gateway.

  E. BGP is enabled by default. This is incorrect. BGP is not enabled by default on a Tier-0 Gateway. To enable BGP, you need to configure the local AS number and the BGP neighbors on the Tier-0 Gateway using the NSX Manager UI or API. To learn more about BGP configuration on a Tier-0 Gateway in NSX, you can refer to the following resources: VMware NSX Documentation: Configure BGP 1 VMware NSX 4.x Professional: BGP Configuration VMware NSX 4.x Professional: BGP Troubleshooting

• Question 44:

  Where is the insertion point for East-West network introspection?

  A. Tier-0 router

  B. Partner SVM

  C. Guest VM vNIC

  D. Host Physical NIC

  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

• Question 45:

  Which CLI command shows syslog on NSX Manager?

  A. get log-file auth.lag

  B. /var/log/syslog/syslog.log

  C. show log manager follow

  D. get log-file syslog

  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

• Question 46:

  Which TraceFlow traffic type should an NSX administrator use tor validating connectivity between App and DB virtual machines that reside on different segments?

  A. Multicast

  B. Unicast

  C. Anycast

  D. Broadcast

  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.

• Question 47:

  An architect receives a request to apply distributed firewall in a customer environment without making changes to the network and vSphere environment. The architect decides to use Distributed Firewall on VDS.

  Which two of the following requirements must be met in the environment? (Choose two.)

  A. vCenter 8.0 and later

  B. NSX version must be 3.2 and later

  C. NSX version must be 3.0 and later

  D. VDS version 6.6.0 and later

  Correct Answer: BD

  Distributed Firewall on VDS is a feature of NSX-T Data Center that allows users to install Distributed Security for vSphere Distributed Switch (VDS) without the need to deploy an NSX Virtual Distributed Switch (N-VDS). This feature provides

  NSX security capabilities such as Distributed Firewall (DFW), Distributed IDS/IPS, Identity Firewall, L7 App ID, FQDN Filtering, NSX Intelligence, and NSX Malware Prevention. To enable this feature, the following requirements must be met in

  the environment:

  The NSX version must be 3.2 and later1. This is the minimum version that supports Distributed Security for VDS.

  The VDS version must be 6.6.0 and later1. This is the minimum version that supports the NSX host preparation operation that activates the DFW with the default rule set to allow.

  References:

  Overview of NSX IDS/IPS and NSX Malware Prevention

• Question 48:

  Which two BGP configuration parameters can be configured in the VRF Lite gateways? (Choose two.)

  A. Graceful Restart

  B. BGP Neighbors

  C. Local AS

  D. Route Distribution

  E. Route Aggregation

  Correct Answer: BE

  Route Aggregation and and D) BGP neighbours are available when configuring BGP in a VRF. "Route distribution" does not exist, what you can do is a "Route Re-Distribution" via BGP. https://docs.vmware.com/en/VMware-NSX/4.1/administration/GUID-4CB5796A-1CED-4F0E-ADE0-72BF7B3F762C.html

• Question 49:

  When deploying an NSX Edge Transport Node, what two valid IP address assignment options should be specified for the TEP IP addresses? (Choose two.)

  A. Use an IP Pool

  B. Use a DHCP Server

  C. Use RADIUS

  D. Use a Static IP List

  E. Use BootP

  Correct Answer: AD

  When deploying an NSX Edge Transport Node, two valid IP address assignment options that should be specified for the TEP IP addresses are Use an IP Pool and Use a Static IP List. These options allow the user to assign TEP IP addresses from a predefined range of IP addresses or a manually entered list of IP addresses, respectively345. The other options are incorrect because they are not supported methods for assigning TEP IP addresses. There is no option to use a DHCP server, RADIUS, or BootP for TEP IP address assignment in NSX-T345. References: NSX-T Edge TEP networking options, Multi-TEP High Availability, Create an IP Pool for Host Tunnel Endpoint IP Addresses

• Question 50:

  In an NSX environment, an administrator is observing low throughput and congestion between the Tier-O Gateway and the upstream physical routers.

  Which two actions could address low throughput and congestion? (Choose two.)

  A. Configure NAT on the Tier-0 gateway.

  B. Configure ECMP on the Tier-0 gateway.

  C. Deploy Large size Edge node/s.

  D. Add an additional vNIC to the NSX Edge node.

  E. Configure a Tier-1 gateway and connect it directly to the physical routers.

  Correct Answer: BC