Which of the following modes allows a client in a load-balancing environment to retain its
connection with the same server during a session?

A.
Standby Server

B.
Active Server

C.
Persistent Server

D.
Relay Server

E.
Backup Server

Explanation:

Persistent Server Mode should always be turned on. This option is the
“superglue” of the logical server: It makes the connection stay with the same
server or service for a time frame specified by you in the Global Properties.
Persistent Server Mode is helpful with services such as FTP , which involve
an active connection. You want the connection to stay with the same server
throughout the duration of the session. That way, if there is a break in the
session, you will be able to get back to that specific server to complete the
download. With Persistent Server Mode turned on (it is on by default), two
persistency options are available: You can choose to make the connection
persistent based on either the service being used (HTTP, FTP, and so on) or
the server selected by the algorithm.