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.

When a stateful service (such as NAT or firewall) is enabled for the first time on a Tier-0 Gateway, the Service Router (SR) is instantiated on the NSX Edge node and automatically connected with the Distributed Router (DR). This connection enables the Tier-0 Gateway to handle stateful services by routing traffic through the SR, which manages stateful packet processing, while the DR provides distributed routing functionality.

https://docs.vmware.com/en/VMware-NSX/4.1/administration/GUID-69DF70C2-1769-4858-97E7-B757CAED08F0.html#:~:text=On%20the%20north%2Dsouth%20traffic,Guest%20Introspection%20(GI)%20platform.
The main components on the edge node for north-south malware prevention perform the following functions:
* IDS/IPS engine: Extracts files and relays events and data to the security hub North-south malware prevention uses the file extraction features of the IDS/IPS engine that runs on NSX Edge for north-south traffic.
* Security hub: Collects file events, obtains verdicts for known files, sends files for local and cloud-based analysis, and sends information to the security analyzer
* RAPID: Provides local analysis of the file
* ASDS Cache: Caches reputation and verdicts of known files

The MAC Table on an ESXi host is used to determine the location of a particular workload for frame- forwarding decisions. This table maps MAC addresses to specific interfaces, enabling the ESXi host to forward frames to the correct destination based on the MAC address of the workload. This is crucial for efficient Layer 2 forwarding decisions within the host.