A.secure data consistency

B.reduce code size in PHP

C.guarantee high performance

D.secure access to the database

E.reduce the database server overhead

A.5XX

B.4XX

C.3XX

D.2XX

A.Output buffering is enabled

B.The client supports local buffering

C.headers_sent() returns true

D.The webserver uses preemptive mode

A.4

B.1

C.3

D.-1

E.2

A.Use the headers_list() function, providing the name of the header as the second argument

B.Use the header_remove() function, providing the name of the header

C.Use the die() function to abort the PHP script

D.Not possible