How to make Wi-Fi (Wireless network) secure and more protected?

HI

THAT IS VERY SIMPLE ANSWER ABOUT MAKE SECURE WI- FI  PLEASE REMEMBER IF U FIRST TIME USE INTERNET CONNECTION PLEASE SECURE UR DNS IP ADREES  AND PASSWORD  DONT SH\\ARE ANY OTHER AND PLEASE MAKE A PASSWORD ALPHA AND NUMERIC MODE AND CHARCTER LONG USE HERE SECOND ANSWER PROTECTED SHUTDOWN TIME PLEASE REMOVE

UR SAFELY HARDWERE  AND DONT MAKE MORE THAN ONE HARDWERE SETUP WIZARD

OK