2V0-41.23 Practice Exam Questions and Answers

NSX supports two types of authentication, authorization, and accounting (AAA) systems when integrating with VMware Identity Manager: RSA SecurID and LDAP and OpenLDAP based on Active Directory (AD). RSA SecurID is a two-factor authentication system that uses a token-based approach to verify the identity of users. LDAP and OpenLDAP based on AD are directory services that store and manage user information and credentials. Both systems can be used to provide centralized authentication for users who want to access applications in an NSX environment .

https://blogs.vmware.com/networkvirtualization/2017/11/remote-user-authentication-and-rbac-with-nsx-t.html

The integration of VMware Identity Manager with NSX provides the following benefits related to user authentication:

• Support for extensive authentication, authorization, and accounting (AAA) systems, including:

— RADIUS

— Smart cards and common access cards

— RSA SecureID

— LDAP and OpenLDAP based on Active Directory (AD)

• Enterprise SSO:

— Common authentication platform across multiple VMware solutions

— Seamless SSO experience

NSX has its own native LDAP and Active Directory integration, but VMware Identity Manager also offers this capability

An NSX administrator can use TCP, UDP, or TLS protocols to transfer log messages to a remote log server. These protocols are supported by NSX Manager, NSX Edge, and hypervisors for remote logging. A Log Insight log server supports all these protocols, as well as LI and LI-TLS, which are specific to Log Insight and optimize network usage. HTTPS, SSH, and SSL are not valid protocols for remote logging in NSX-T Data Center. References: : VMware NSX-T Data Center Administration Guide, page 102. : VMware Docs: Configure Remote Logging

https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.2/administration/GUID-EAAD1FBE-F750-4A5A-A3BF-92B1E7D016F

E.  

Network Introspection is a service insertion feature that allows third-party network security services to monitor and analyze the traffic between virtual machines. Network Introspection can be configured on the host pNIC or on the partner SVM, depending on the type of service and the deployment model. The host pNIC configuration is used for services that require traffic redirection from the physical network to the service virtual machine. The partner SVM configuration is used for services that require traffic redirection from the virtual network to the service virtual machine. Network Introspection cannot be configured on the Tier-0 or Tier-1 gateways, as they are not part of the data plane where the service insertion occurs. Network Introspection also cannot be configured on the edge node, as it is a logical construct that hosts the Tier-0 and Tier-1 gateways. References: Distributed Service Insertion, NSX Securing “Anywhere” Part IV

According to the VMware NSX Documentation, these are the two places where you need to configure the VLANs used in VRF Lite:

• Uplink trunk segment: This is a segment that connects a tier-0 gateway to a physical network using multiple VLAN tags. You need to configure the VLAN IDs for each VRF on this segment.
• Uplink interface of the VRF gateway: This is an interface that connects a VRF gateway to an uplink trunk segment using a specific VLAN tag. You need to configure the VLAN ID for each VRF on this interface.

The two interfaces that will be used for ingress traffic on the Edge node supporting a Single Tier topology are:

• B.  

  Tier-0 Uplink interface

• C.  

  Downlink Interface for the Tier-0 DR

The Tier-0 Uplink interface is the interface that connects the Tier-0 gateway to the external network. It is used to receive traffic from the physical router or switch that is the next hop for the Tier-0 gateway. The Tier-0 Uplink interface can be configured with a static IP address or use BGP to exchange routes with the external network.

The Downlink Interface for the Tier-0 DR is the interface that connects the Tier-0 gateway to the workload segments. It is used to receive traffic from the VMs or containers that are attached to the segments. The Downlink Interface for the Tier-0 DR is a logical interface (LIF) that is distributed across all transport nodes that host the segments. The Downlink Interface for the Tier-0 DR has an IP address that acts as the default gateway for the VMs or containers on the segments.

https://docs.vmware.com/en/VMware-NSX-Intelligence/4.0/user-guide/GUID-DC78552B-2CC4-410D-A6C9-3FE0DCEE545

B.  

https://docs.vmware.com/en/VMware-Validated-Design/5.0.1/com.vmware.vvd.sddc-nsxt-design.doc/GUID-74141ABD-C9AF-4A92-8338-092CD67EB56

E.  

https://www.hydra1303.com/nsx-t-routing-part-i#:~:text=Logical%20routing%20in%20NSX%2DT,using%20static%20routes%20or%20BGP

https://www.delltechnologies.com/asset/en-us/products/converged-infrastructure/technical-support/docu96042.pdf

According to the Network Bachelor article1, an IDS signature contains data used to identify an attacker’s attempt to exploit a known vulnerability in both the operating system and applications. This implies that statement B is true. According to the VMware NSX Documentation2, IDS/IPS Profiles are used to group signatures, which can then be applied to select applications and traffic. This implies that statement E is true. Statement A is false because users cannot upload their own IDS signature definitions, they have to use the ones provided by VMware or Trustwave3. Statement C is false because an IDS signature does not contain data used to identify the creator of known exploits and vulnerabilities, only the exploits and vulnerabilities themselves. Statement D is false because IDS signatures are classified into one of the following severity categories: Critical, High, Medium, Low, or Informational1.

The correct answers are

A.  

D.  

E.  

The other options are incorrect or not supported by NSX Network Detection and Response. East-West anti-malware events from the ESXi hosts are not collected by NSX Network Detection and Response3. Distributed Firewall flow data from the ESXi hosts are not used for correlation/intrusion campaigns by NSX Network Detection and Response3.

https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.2/administration/GUID-14BBE50D-9931-4719-8FA7-884539C0D277.html

According to the VMware NSX Documentation1, NSX-T Data Center supports the following types of DHCP configuration on a segment:

• Local DHCP server: This option creates a local DHCP server that has an IP address on the segment and provides dynamic IP assignment service only to the VMs that are attached to the segment.
• Gateway DHCP server: This option is attached to a tier-0 or tier-1 gateway and provides DHCP service to the networks (overlay segments) that are directly connected to the gateway and configured to use a gateway DHCP server.
• DHCP Relay: This option relays the DHCP client requests to the external DHCP servers that can be in any subnet, outside the SDDC, or in the physical network.

https://docs.vmware.com/en/VMware-NSX/4.0/administration/GUID-486C1281-C6CF-47EC-B2A2-0ECFCC4A68C

E.  

According to the VMware NSX Documentation, these are two of the ways that you can use to configure Distributed Firewall on VDS:

• NSX API: This is a RESTful API that allows you to programmatically configure and manage Distributed Firewall on VDS using HTTP methods and JSON payloads. You can use tools such as Postman or curl to send API requests to the NSX Manager node.
• NSX UI: This is a graphical user interface that allows you to configure and manage Distributed Firewall on VDS using menus, tabs, buttons, and forms. You can access the NSX UI by logging in to the NSX Manager node using a web browser.

https://docs.vmware.com/en/VMware-NSX/4.1/administration/GUID-0DEF9F18-608D-4B5C-9175-5514750E901

B.  

According to the VMware NSX Documentation, these are the prerequisites for adding nodes to an NSX Management Cluster using the NSX UI:

• All nodes must be in the same subnet and have IP connectivity with each other.
• A compute manager must be configured and associated with the NSX Manager node.
• The NSX Manager node must have a valid license.
• The NSX Manager node must have a valid certificate.

According to the VMware NSX 4.x Professional documents and tutorials, IPSec VPN secures traffic flowing between two networks connected over a public network through IPSec gateways called endpoints. NSX Edge supports a policy-based or a route-based IPSec VPN. Beginning with NSX-T Data Center 2.5, IPSec VPN services are supported on both Tier-0 and Tier-1 gateways1. NSX Edge also leverages the DPDK accelerated performance library to optimize the performance of IPSec VPN2.

https://docs.vmware.com/en/VMware-NSX/4.0/administration/GUID-7D9F7199-E51B-478B-A8BC-58AD5BBAA0F6.html

• Security policy recommendations: Are East-West distributed firewall (DFW) security policies in the application category12.
• Security group recommendations: Are VMs or physical servers whose traffic flows were analyzed for the time period and the boundary you had specified12.
• Service recommendations: Are service objects that were used by applications in the VMs or physical servers that you had specified, but the services are not yet defined in the NSX inventory12.

https://docs.vmware.com/en/VMware-NSX-Intelligence/4.1/user-guide/GUID-BA3B0D67-4AA8-439E-A845-4598DAD6B9D0.html