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2V0-41.23 Real Exam Question Answers Updated [Jan 07, 2024]
NEW QUESTION # 51
Sort the rule processing steps of the Distributed Firewall. Order responses from left to right.
Answer:
Explanation:
Explanation
The correct order of the rule processing steps of the Distributed Firewall is as follows:
Packet arrives at vfilter connection table. If matching entry in the table, process the packet.
If connection table has no match, compare the packet to the rule table.
If the packet matches source, destination, service, profile and applied to fields, apply the action defined.
If the rule table action is allow, create an entry in the connection table and forward the packet.
If the rule table action is reject or deny, take that action.
This order is based on the description of how the Distributed Firewall works in the web search results1. The first step is to check if there is an existing connection entry for the packet in the vfilter connection table, which is a cache of flow entries for rules with an allow action. If there is a match, the packet is processed according to the connection entry. If there is no match, the packet is compared to the rule table, which contains all the security policy rules. The rules are evaluated from top to bottom until a match is found. The match criteria include source, destination, service, profile and applied to fields. The action defined by the matching rule is applied to the packet. The action can be allow, reject or deny. If the action is allow, a new connection entry is created for the packet and the packet is forwarded to its destination. If the action is reject or deny, the packet is dropped and an ICMP message or a TCP reset message is sent back to the source.
NEW QUESTION # 52
An administrator wants to validate the BGP connection status between the Tier-O Gateway and the upstream physical router.
What sequence of commands could be used to check this status on NSX Edge node?
- A. get gateways
vrf <number>
get bgp neighbor - B. set vrf <ID>
show logical-routers
show <LR-D> bgp - C. show logical-routers
get vrf
show ip route bgp - D. enable <LR-D>
get vrf <ID>
show bgp neighbor
Answer: A
Explanation:
Explanation
The sequence of commands that could be used to check the BGP connection status between the Tier-O Gateway and the upstream physical router on NSX Edge node is get gateways, vrf <number>, get bgp neighbor. These commands can be executed on the NSX Edge node CLI after logging in as admin6. The first command, get gateways, displays the list of logical routers (gateways) configured on the Edge node, along with their IDs and VRF numbers7. The second command, vrf <number>, switches to the VRF context of the desired Tier-O Gateway, where <number> is the VRF number obtained from the previous command7. The third command, get bgp neighbor, displays the BGP neighbor summary for the selected VRF, including the neighbor IP address, AS number, state, uptime, and prefixes received8. The other options are incorrect because they either use invalid or incomplete commands or do not switch to the correct VRF context. References: NSX-T Command-Line Interface Reference, NSX Edge Node CLI Commands, Troubleshooting BGP on NSX-T Edge Nodes
NEW QUESTION # 53
How does the Traceflow tool identify issues in a network?
- A. Compares the management plane configuration states containing control plane traffic and error reporting from transport node agents.
- B. Compares intended network state in the control plane with Tunnel End Point (TEP) keepalives in the data plane.
- C. Injects ICMP traffic into the data plane and observes the results in the control plane.
- D. Injects synthetic traffic into the data plane and observes the results in the control plane.
Answer: D
Explanation:
Explanation
The Traceflow tool identifies issues in a network by injecting synthetic traffic into the data plane and observing the results in the control plane. This allows the tool to identify any issues in the network and provide a detailed report on the problem. You can use the Traceflow tool to test connectivity between any two endpoints in your NSX-T Data Center environment.
NEW QUESTION # 54
Sort the rule processing steps of the Distributed Firewall. Order responses from left to right.
Answer:
Explanation:
Explanation
The correct order of the rule processing steps of the Distributed Firewall is as follows:
* Packet arrives at vfilter connection table. If matching entry in the table, process the packet.
* If connection table has no match, compare the packet to the rule table.
* If the packet matches source, destination, service, profile and applied to fields, apply the action defined.
* If the rule table action is allow, create an entry in the connection table and forward the packet.
* If the rule table action is reject or deny, take that action.
This order is based on the description of how the Distributed Firewall works in the web search results1. The first step is to check if there is an existing connection entry for the packet in the vfilter connection table, which is a cache of flow entries for rules with an allow action. If there is a match, the packet is processed according to the connection entry. If there is no match, the packet is compared to the rule table, which contains all the security policy rules. The rules are evaluated from top to bottom until a match is found. The match criteria include source, destination, service, profile and applied to fields. The action defined by the matching rule is applied to the packet. The action can be allow, reject or deny. If the action is allow, a new connection entry is created for the packet and the packet is forwarded to its destination. If the action is reject or deny, the packet is dropped and an ICMP message or a TCP reset message is sent back to the source.
NEW QUESTION # 55
Refer to the exhibit.
An administrator would like to change the private IP address of the NAT VM I72.l6.101.il to a public address of 80.80.80.1 as the packets leave the NAT-Segment network.
Which type of NAT solution should be implemented to achieve this?
- A. NAT64
- B. DNAT
- C. SNAT
- D. Reflexive NAT
Answer: C
Explanation:
Explanation
SNAT stands for Source Network Address Translation. It is a type of NAT that translates the source IP address of outgoing packets from a private address to a public address. SNAT is used to allow hosts in a private network to access the internet or other public networks1 In the exhibit, the administrator wants to change the private IP address of the NAT VM 172.16.101.11 to a public address of 80.80.80.1 as the packets leave the NAT-Segment network. This is an example of SNAT, as the source IP address is modified before the packets are sent to an external network.
According to the VMware NSX 4.x Professional Exam Guide, SNAT is one of the topics covered in the exam objectives2 To learn more about SNAT and how to configure it in VMware NSX, you can refer to the following resources:
VMware NSX Documentation: NAT 3
VMware NSX 4.x Professional: NAT Configuration 4
VMware NSX 4.x Professional: NAT Troubleshooting 5
https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.2/administration/GUID-7AD2C384-4303-4D6C-A
NEW QUESTION # 56
Which command is used to set the NSX Manager's logging-level to debug mode for troubleshooting?
- A. Set service manager log-level debug
- B. Set service manager logging-level debug
- C. Set service nsx-manager logging-level debug
- D. Set service nsx-manager log-level debug
Answer: A
Explanation:
Explanation
According to the VMware NSX CLI Reference Guide2, this command sets the logging level of the NSX Manager service to debug mode, which provides more detailed information for troubleshooting purposes. The other commands are either incorrect or do not exist.
NEW QUESTION # 57
Which two of the following are used to configure Distributed Firewall on VDS? (Choose two.)
- A. NSX API
- B. NSX UI
- C. vSphere API
- D. vCenter API
- E. NSX CU
Answer: A,B
Explanation:
Explanation
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.
NEW QUESTION # 58
Which two built-in VMware tools will help Identify the cause of packet loss on VLAN Segments? (Choose two.)
- A. Packet Capture
- B. Activity Monitoring
- C. Live Flow
- D. Traceflow
- E. Flow Monitoring
Answer: A,D
Explanation:
Explanation
According to the VMware NSX Documentation1, Packet Capture and Traceflow are two built-in VMware tools that can help identify the cause of packet loss on VLAN segments.
Packet Capture allows you to capture packets on a specific interface or segment and analyze them using tools such as Wireshark or tcpdump. Packet Capture can help you diagnose network issues such as misconfigured MTU, incorrect VLAN tags, or firewall drops.
Traceflow allows you to inject synthetic packets into the network and trace their path from source to destination. Traceflow can help you verify connectivity, routing, and firewall rules between virtual machines or segments. Traceflow can also show you where packets are dropped or modified along the way.
NEW QUESTION # 59
An administrator has deployed 10 Edge Transport Nodes in their NSX Environment, but has forgotten to specify an NTP server during the deployment.
What is the efficient way to add an NTP server to all 10 Edge Transport Nodes?
- A. Use a Node Profile
- B. Use Transport Node Profile
- C. Use a PowerCU script
- D. Use the CU on each Edge Node
Answer: A
Explanation:
A node profile is a configuration template that can be applied to multiple NSX Edge nodes or transport nodes at once. A node profile can include settings such as NTP server, DNS server, syslog server, and so on1. By using a node profile, an administrator can efficiently configure or update the network settings of multiple NSX Edge nodes or transport nodes in a single operation2. The other options are incorrect because they are either not efficient or not supported. Using the CLI on each Edge node would require manual and repetitive commands for each node, which is not efficient. Using a Transport Node Profile would not work, because a Transport Node Profile is used to configure the NSX-T Data Center components on a transport node, such as the transport zone, the N-VDS, and the uplink profiles3. Using a PowerCLI script might work, but it would require writing and testing a custom script, which is not as efficient as using a built-in feature like a node profile.
NEW QUESTION # 60
Which VPN type must be configured before enabling a L2VPN?
- A. Port-based IPSec VPN
- B. Route-based IPSec VPN
- C. SSL-bosed IPSec VPN
- D. Policy based IPSec VPN
Answer: B
Explanation:
Explanation
According to the VMware NSX Documentation, this VPN type must be configured before enabling a L2VPN.
L2VPN stands for Layer 2 VPN and is a feature that allows you to extend your layer 2 network across different sites using an IPSec tunnel. Route-based IPSec VPN is a VPN type that uses logical router ports to establish IPSec tunnels between sites.
NEW QUESTION # 61
What needs to be configured on a Tler-0 Gateway lo make NSX Edge Services available to a VM on a VLAN-backed logical switch?
- A. VLAN Uplink
- B. Service Interface
- C. Downlink Interface
- D. Loopback Router Port
Answer: B
Explanation:
Explanation
The service interface is a special-purpose port to enable services for mainly VLAN-based networks.
North-south service insertion is another use case that requires a service interface to connect a partner appliance and redirect north-south traffic for partner services. Service interfaces are supported on both active-standby Tier-0 logical routers and Tier-1 routers. Firewall, NAT, and VPNs are supported on this interface. The service interface is also a downlink
NEW QUESTION # 62
What needs to be configured on a Tler-0 Gateway lo make NSX Edge Services available to a VM on a VLAN-backed logical switch?
- A. VLAN Uplink
- B. Service Interface
- C. Downlink Interface
- D. Loopback Router Port
Answer: B
Explanation:
Explanation
A service interface is a logical interface on a tier-0 gateway that connects to a VLAN logical switch and provides NSX Edge services to the VMs on that switch. A service interface is required for services such as load balancing, VPN, NAT, and DHCP1. A downlink interface is used to connect a tier-0 gateway to a tier-1 gateway or an overlay logical switch. A VLAN uplink is used to connect a tier-0 gateway to the physical network. A loopback router port is used to assign an IP address to the tier-0 gateway for routing protocols or firewall rules2...
NEW QUESTION # 63
Which two logical router components span across all transport nodes? (Choose two.)
- A. TIERO_DISTRI BUTE D_ ROUTER
- B. DISTRIBUTED_ROUTER_TIER0
- C. SERVICE_ROUTER_TIERl
- D. DISTRIBUTED_R0UTER_TIER1
- E. SFRVICE_ROUTER_TJER0
Answer: B,D
Explanation:
Explanation
https://docs.vmware.com/en/VMware-Validated-Design/5.0.1/com.vmware.vvd.sddc-nsxt-design.doc/GUID-741
https://www.hydra1303.com/nsx-t-routing-part-i#:~:text=Logical%20routing%20in%20NSX%2DT,using%20sta
https://www.delltechnologies.com/asset/en-us/products/converged-infrastructure/technical-support/docu96042.pd
NEW QUESTION # 64
What are tour NSX built-in rote-based access control (RBAC) roles? (Choose four.)
- A. Auditor
- B. Network Admin
- C. Enterprise Admin
- D. Full Access
- E. None
- F. LB Operator
- G. Read
Answer: A,B,C,F
Explanation:
Explanation
https://docs.vmware.com/en/VMware-NSX/4.1/administration/GUID-26C44DE8-1854-4B06-B6DA-A2FD426C
NEW QUESTION # 65
Which command on ESXI is used to verify the Local Control Plane connectivity with Central Control Plane?
- A.
- B.
- C.
- D.
Answer: C
Explanation:
Explanation
According to the web search results, the command that is used to verify the Local Control Plane (LCP) connectivity with Central Control Plane (CCP) on ESXi is get control-cluster status. This command displays the status of the LCP and CCP components on the ESXi host, such as the LCP agent, CCP client, CCP server, and CCP connection. It also shows the IP address and port number of the CCP server that the LCP agent is connected to. If the LCP agent or CCP client are not running or not connected, it means that there is a problem with the LCP connectivity .
NEW QUESTION # 66
A customer has a network where BGP has been enabled and the BGP neighbor is configured on the Tier-0 Gateway. An NSX administrator used the get gateways command to retrieve this Information:
Which two commands must be executed to check BGP neighbor status? (Choose two.)
- A. sa-nexedge-01(tier1_sr> get bgp neighbor
- B. vrf 1
- C. vrf 3
- D. sa-nexedge-01(tier1_dr)> get bgp neighbor
- E. vrf 4
- F. sa-nexedge-01(tier0_sr> get bgp neighbor
Answer: E,F
Explanation:
According to the image that you sent, the BGP neighbor is configured on the tier-0 gateway with the UUID 9f8e3a7c-5f9c-4d1a-bb6f-9c7f3d6f3d63 and the VRF ID 4. Therefore, to check the BGP neighbor status, you need to enter the VRF context of 4 and execute the get bgp neighbor command on the tier-0 service router (SR) node.
The other options are either incorrect or not applicable for this scenario. vrf 1, vrf 3, and sa-nexedge-01(tier1_dr)> get bgp neighbor are not related to the BGP neighbor configuration on the tier-0 gateway. sa-nexedge-01(tier1_sr> get bgp neighbor is also not relevant, as there is no BGP neighbor configured on the tier-1 gateway.
NEW QUESTION # 67
An NSX administrator Is treating a NAT rule on a Tler-0 Gateway configured In active-standby high availability mode. Which two NAT rule types are supported for this configuration? (Choose two.)
- A. Destination NAT
- B. Port NAT
- C. Source NAT
- D. 1:1 NAT
- E. Reflexive NAT
Answer: A,C
Explanation:
According to the VMware NSX Documentation, these are two NAT rule types that are supported for a tier-0 gateway configured in active-standby high availability mode. NAT stands for Network Address Translation and is a feature that allows you to modify the source or destination IP address of a packet as it passes through a gateway.
Destination NAT: This rule type allows you to change the destination IP address of a packet from an external IP address to an internal IP address. You can use this rule type to provide access to your internal servers from external networks using public IP addresses.
Source NAT: This rule type allows you to change the source IP address of a packet from an internal IP address to an external IP address. You can use this rule type to provide access to external networks from your internal servers using public IP addresses.
NEW QUESTION # 68
Refer to the exhibit.
Which two items must be configured to enable OSPF for the Tler-0 Gateway in the Image? Mark your answers by clicking twice on the image.
Answer:
Explanation:
Explanation
The correct answer is to enable the OSPF toggle and to add an Area Definition for the Tier-0 gateway in the image. These two items are required to configure OSPF on the Tier-0 gateway, as explained in the web search results123.
To mark your answers by clicking twice on the image, you can double-click on the toggle switch next to OSPF to turn it on. The switch should change from gray to blue, indicating that the option is enabled. Then, you can double-click on the Set button next to Area Definition to add an area definition. A pop-up window should appear where you can specify the area ID and type.
NEW QUESTION # 69
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