What are the barrier birth control methods?

Answer 1

A barrier Birth Control method is one that blocks sperm from reaching the uterus. Examples of barrier birth control methods include condoms, diaphragms, sponges, and cervical caps.
Barrier method means there is a physical device to prevent sperm from entering the woman's reproductive tract.

Male or female condom, sponge, cervical cap, diaphragm are all barrier methods.

Birth Control Pills, IUD, sterilization, withdrawal, rhythm, are not barrier methods.
These methods work by preventing the sperm from getting to and fertilizing the egg