Automatic high availability synchronization can fail if the systems are running different build versions. This is because HA synchronization requires both systems to be using the same software version to ensure that all configurations and settings are compatible between the primary and secondary systems.
The rewrite action replaces the Date header in the http response with the NetScaler system time in a conventional date format. This is based on the function of the rewrite action to modify HTTP response headers, and specifically this action targets the Date header to synchronize it with the current system time of the NetScaler server.
To troubleshoot reset issues on the Intranet server website load-balanced through the NetScaler, a Citrix Administrator should take a packet trace with nstrace and analyze it with Wireshark. This approach allows the administrator to observe and diagnose the network traffic and identify any reset packets or anomalies causing the issue. Packet tracing is a comprehensive diagnostic tool that helps in understanding the exact nature of the problem in the traffic flow between the server and the clients.
To modify all the URLs in the response body from 'http://' to 'https://', the rewrite action should search for 'http://' and replace it with 'https://'. Option C accurately reflects this by using the replace_all function to find the pattern 'http://' and substitute it with 'https://'.
In a multi-proxy environment, especially when using USIP mode and users are all connecting from the same location, Source IP-based persistence would not work effectively because all users would have the same Source IP. Therefore, using HTTP Cookies for persistence is the best approach as it allows the sessions to be tracked individually, preventing disconnections due to the single source IP issue.