In terms of job leads and social networks, how are men's networks different from women's?

If a woman's network has more women in it, she is less likely to hear about job openings.

According to various studies, On average, women tend to not to apply or offer a job unless they're absolutely sure that she or that other person is qualified for the job.

Men on the other hands, tend to be able to apply or offer a job even if they're in 60% certainty that he or that other person is qualified for the job