To deploy Netskope using IPSec tunnels for security in this scenario, two considerations to make a successful connection are C. redundant POPs and D. number of hosts. Redundant POPs are Points of Presence that are geographically distributed data centers that host the Netskope cloud platform. You need to consider redundant POPs to ensure high availability and resiliency of your IPSec tunnels in case of a failure or outage in one of the POPs. You can configure multiple IPSec tunnels from your network to different POPs and use dynamic routing protocols such as BGP to load balance and failover the traffic1. Number of hosts is the number of devices or endpoints that will use the IPSec tunnels to access the cloud services. You need to consider the number of hosts to estimate the bandwidth and throughput requirements of your IPSec tunnels and choose the appropriate POPs that can handle the traffic volume. You can use the Netskope Bandwidth Calculator tool to estimate the bandwidth and throughput based on the number of hosts, locations, and cloud services2. Therefore, options C and D are correct and the other options are incorrect. References: IPSec - Netskope Knowledge Portal, Netskope Bandwidth Calculator