Which three statements are true about the Node Manager?
A.
The Node Manager can restart the Managed Serves that have failed.
B.
The Node Manager should be run as either a daemon or a service so that if the host computer
is rebooted, the Node Manager will also be automatically started.
C.
The Node Manager runs on a different host from the Managed Server it is controlling.
D.
The Node Manager can start a Managed Server the first time the Managed Server starts if the
Administration Server is unavailable because MSI mode is enabled by default.
E.
The Node Manager allows you to start Managed Servers from the administration console.
Explanation:
A, E: Node Manager enables you to perform these tasks:
* Start and stop remote Managed Servers. (E)
* Monitor the self-reported health of Managed Servers and automatically kill server instances
whose health state is “failed”.
* Automatically restart Managed Servers that have the “failed” health state, or have shut down
unexpectedly due to a system crash or reboot. (A)
B: The WebLogic Server installation process installs Node Manager to run as an operating system
service: a daemon on UNIX machines, or a Windows service on Windows-based machines. An
operating system service starts up automatically each time the operating system boots.
A key Node Manager feature is the ability to restart Managed Servers after a failure. If the failure is
a machine crash, running Node Manager as a service ensures that Node Manager starts up
automatically when the machine reboots, and is available to restart Managed Servers on that
machine.
E: Requests from the Administration Console (or JMX utilities such as weblogic.Admin) to start a
Managed Server using Node Manager are issued to the Administration Server for the domain that
contains the Managed Server.
Reference: Configuring and Managing WebLogic Server, Overview of Node Manager