Allowing UDP port 443 is recommended to support DTLS, which enhances performance over the Netskope tunnel. TCP port 443 must also be allowed as it is essential for secure HTTPS connections used by Netskope services.

Netskope can inspect outbound SMTP traffic for Microsoft Exchange and Gmail using the Netskope client.
The Netskope client intercepts the SMTP traffic from the user's device and forwards it to the Netskope cloud for DLP scanning. The Netskope client does not inspect inbound SMTP traffic, as this is handled by the cloud email service or the MTA. Therefore, option A is correct and the other options are incorrect. References: Configure Netskope SMTP Proxy with Microsoft O365 Exchange, Configure Netskope SMTP Proxy with Gmail, SMTP DLP, Best Practices for Email Security with SMTP proxy

The problem in this scenario is that the Netskope client connection is being decrypted by a network security device. This is evident from the log message "ERROR SSL certificate verification failed: self signed certificate in certificate chain". This means that the Netskope client is receiving a certificate that is not issued by Netskope, but by a device that is intercepting and decrypting the traffic between the client and the Netskope cloud. This can cause the client to fail to download the required configuration and remain in a disabled state1. Therefore, option B is correct and the other options are incorrect. References: Troubleshooting Netskope Client - Netskope Knowledge Portal, Using Netskope Client
- Netskope Knowledge Portal

Creating a steering exception for the host is the appropriate action to prevent SSL decryption on specific network traffic. Steering exceptions allow you to bypass decryption for designated hosts, which is useful for privacy-sensitive scenarios.

The Netskope client can be disabled by the administrator from the Netskope console. This is useful for troubleshooting or maintenance purposes. When the client is disabled by the administrator, it shows the status as "Admin Disabled" and does not apply any policies or steer any traffic. The user cannot enable the client unless the administrator enables it from the console. The other options are not valid reasons for the client to be in an "Admin Disabled" state. References: Netskope Client Status 1, Enable or Disable Netskope Client 2