Which three statements are true about the default behavior of WebLogic server proxy plug-ins?

WebLogic Server proxy plug-ins are designed to work with a WebLogic Cluster to provide scalability and high availability. A core feature is session affinity (A), where the plug-in uses a session cookie to "pin" a client to a specific server, ensuring session data integrity. The plug-in also provides failover (B); if a request to a server fails, the plug-in will retry the request on another available server in the cluster (for idempotent requests). Furthermore, the plug-in can dynamically discover the cluster membership (D), allowing it to automatically recognize when servers are added or removed from the cluster without requiring a manual reconfiguration of the proxy.

C. The proxy distributes requests based on round-robin or weight-based algorithms by default, not CPU usage.
E. The use of SSL between the proxy and WebLogic Server is a configurable option (WLProxySSL) and is not enabled by default.
F. Session replication is a function performed between WebLogic Server instances within the cluster, not by the proxy plug-in.

1. Oracle Fusion Middleware

Using Oracle WebLogic Server Proxy Plug-Ins 12.2.1.4

E95903-03

Chapter 1

"Introduction to Oracle WebLogic Server Proxy Plug-Ins":

For A & B: The section "Proxying Requests" states

"When a client requests a resource that requires a session

the proxy server can use a cookie to maintain the affinity between the client and the server that is servicing the client's request... If a server in a cluster fails

the plug-in routes the client's request to another server in the cluster."

For D: The section "Dynamic Server List" states

"The plug-in can dynamically detect when servers are added to or removed from a cluster."

For C: The section "Load Balancing" describes the available algorithms as "round-robin

weight-based

and random

" with no mention of CPU-based load balancing.

2. Oracle Fusion Middleware

Using Oracle WebLogic Server Proxy Plug-Ins 12.2.1.4

E95903-03

Chapter 2

"General Parameters for Web Server Plug-Ins":

For E: The description for the WLProxySSL parameter states

"Set this parameter to ON to enable SSL between the plug-in and WebLogic Server... The default is OFF."

3. Oracle Fusion Middleware

Administering Clusters for Oracle WebLogic Server 12.2.1.4

E95894-03

Chapter 6

"Understanding Session Replication and Failover":

For F: This chapter details how session state is replicated directly between a primary and a secondary WebLogic Server instance within the cluster. The proxy plug-in is not described as participating in the replication process itself.