NSE7_PBC-7.2 Online Practice Questions

Explanation:
B) It is recommended to enable NAT on FortiGate policies. This is because the Azure load balancer uses a hash-based algorithm to distribute traffic to the FortiGate instances, and it relies on the source and destination IP addresses and ports of the packets1. If NAT is not enabled, the source IP address of the packets will be the same as the load balancer’s frontend IP address, which will result in uneven distribution of traffic and possible asymmetric routing issues1. Therefore, it is recommended to enable NAT on the FortiGate policies to preserve the original source IP address of the packets and ensure optimal load balancing and routing1.
D. It supports session synchronization for handling asynchronous traffic. This means that the FortiGate instances can synchronize their session tables with each other, so that they can handle traffic that does not follow the same path as the initial packet of a session2. For example, if a TCP SYN packet is sent to FortiGate A, but the TCP SYN-ACK packet is sent to FortiGate B, FortiGate B can forward the packet to FortiGate A by looking up the session table2. This feature allows the FortiGate instances to handle asymmetric traffic that may occur due to the Azure load balancer’s hash-based algorithm or other factors. The other options are incorrect because:
It does not use the vdom-exception command to exclude the configuration from being synced. The vdom-exception command is used to exclude certain configuration settings from being synchronized between FortiGate devices in a cluster or a high availability group3. However, in this scenario, the FortiGate devices are not in a cluster or a high availability group, but they are standalone devices with standalone configuration synchronization enabled. This feature allows them to synchronize most of their configuration settings with each other, except for some settings that identify the FortiGate to the network, such as the hostname.
It does not use the FGCP protocol. FGCP stands for FortiGate Clustering Protocol, which is used to synchronize configuration and state information between FortiGate devices in a cluster or a high availability group. However, in this scenario, the FortiGate devices are not in a cluster or a high availability group, and they use standalone configuration synchronization instead of FGCP.

Explanation:
Transit Gateway Connect Specificity: AWS Transit Gateway Connect is a specific feature designed to streamline the integration of SD-WAN appliances and third-party virtual appliances into your Transit Gateway.expand_more It utilizes a specialized attachment type.exclamation
BGP's Role: While Transit Gateway Connect attachments leverage BGP for dynamic routing, BGP itself is a routing protocol and not the core connectivity mechanism in this context.
GRE Tunneling: GRE is a tunneling protocol commonly used with Transit Gateway Connect attachments to encapsulate traffic.

Explanation:
A is incorrect because the FortiGate public IP is not the next-hop for all the traffic. The FortiGate public IP is only used for incoming traffic from the internet. The Azure load balancer distributes the incoming traffic to the active FortiGate VM based on a health probe123. The FortiGate public IP is not used for outgoing traffic or internal traffic.
B is correct because an internal load balancer listener is the next-hop for outgoing traffic. The internal load balancer listener is configured with a floating IP address that is assigned to the active FortiGate VM. The internal load balancer listener also has a health probe to monitor the status of the FortiGate VMs123. The internal load balancer listener forwards the outgoing traffic to the internet through the public load balancer.
C is incorrect because you do not need to add a route to the Microsoft VIP used for the health check. The Microsoft VIP is an internal IP address that is used by the Azure load balancer to send health probes to the FortiGate VMs123. The Microsoft VIP is not reachable from outside the Azure network and does not require any routing configuration on the FortiGate VMs.
D is correct because a dedicated management interface can be used for load balancing. In this deployment, port4 is used as a dedicated management interface that connects to the management network3. The dedicated management interface can be used to access the FortiGate VMs for configuration and monitoring purposes. The dedicated management interface can also be used to synchronize the configuration and session information between the primary and secondary devices in an HA cluster2.

Explanation:
Simplified and Scalable Connectivity: Transit Gateway Connect allows you to establish GRE tunnels to your SD-WAN appliances natively within the AWS network. This eliminates the complexity of managing individual IPsec VPN connections, especially as your cloud presence grows.
Potential for Enhanced Performance: GRE offers lower overhead compared to IPsec, which can result in higher throughput for bandwidth-intensive SD-WAN applications.
Flexibility: While IPsec is supported for scenarios requiring strong encryption, the focus on GRE highlights the performance and scalability benefits that are often prioritized when integrating SD-WAN with AWS.
Dynamic Routing: The integration with BGP further streamlines network management by automating route updates and distribution.
Addressing the IPsec Consideration:
It's important to acknowledge that SD-WAN Transit Gateway Connect does support IPsec. If your question is specifically framed within the context of Fortinet's FCSS 7.2 materials and they emphasize the hybrid usage of GRE and IPsec, then a modified answer might be appropriate:

Explanation:
The correct answer is A and C. A transport attachment and a connect attachment are necessary to connect a transit gateway to an existing VPC with BGP.
According to the AWS documentation for Transit Gateway, a transit gateway is a network transit hub that connects VPCs and on-premises networks. To connect a transit gateway to an existing VPC with BGP, you need to do the following steps:
Create a transport attachment. A transport attachment is a resource that connects a VPC or VPN to a transit gateway. You can specify the BGP options for the transport attachment, such as the autonomous system number (ASN) and the BGP peer IP address.
Create a connect attachment. A connect attachment is a resource that enables you to use your own appliance to provide network services for traffic that flows through the transit gateway. You can use a connect attachment to route traffic between the transport attachment and your appliance using GRE tunnels and BGP.
The other options are incorrect because:
A BGP attachment is not a valid type of attachment for a transit gateway. BGP is a protocol that enables dynamic routing between the transit gateway and the VPC or VPN.
A GRE attachment is not a valid type of attachment for a transit gateway. GRE is a protocol that encapsulates packets for tunneling purposes. GRE tunnels are established between the connect attachment and your appliance.
: [Transit Gateways - Amazon Virtual Private Cloud] : [Transit Gateway Connect - Amazon Virtual Private Cloud]