052-247(新增70题2018)

You have been recently hired as a database administrator. Your senior manager asks you to study the production database server and submit a report on the settings done by the previous DB

A. While observing the server settings, you find that the following parameter has been set in the parameter file of the database:

REMOTE_OS_AUTHENT = TRUE

What could have been the reason to set this parameter as TRUE?

A. to enable operating system authentication for a remote client

B. to restrict the scope of administration to identical operating systems

C. to allow the start up and shut down of the database from a remote client

D. to enable the administration of the operating system from a remote client

E. to disable the administration of the operating system from a remote client

Answer: A

REMOTE_OS_AUTHENT 

REMOTE_OS_AUTHENT specifies whether remote clients will be authenticated with the value of the OS_AUTHENT_PREFIX parameter.
The REMOTE_OS_AUTHENT parameter is deprecated. It is retained for backward compatibility only.

"OS_AUTHENT_PREFIX"

OS_AUTHENT_PREFIX specifies a prefix that Oracle uses to authenticate users attempting to connect to the server. Oracle concatenates the value of this parameter to the beginning of the user's operating system account name. When a connection request is attempted, Oracle compares the prefixed username with Oracle usernames in the database.

The default value of this parameter is OPS$ for backward compatibility with previous versions. However, you might prefer to set the prefix value to "" (a null string), thereby eliminating the addition of any prefix to operating system account names.

转载于:https://www.cnblogs.com/Babylon/p/8624194.html