Which of the following is the practice of marking open wireless access points called?

A.
War dialing

B.
War chalking

C.
War driving

D.
Evil twin

Explanation:
War chalking is the act of making chalk marks on outdoor surfaces (walls, sidewalks, buildings, sign posts,trees) to indicate the existence of an open wireless network connection, usually offering an Internet connection
so that others can benefit from the free wireless access. The open connections typically come from the access
points of wireless networks located within buildings to serve enterprises. The chalk symbols indicate the type of
access point that is available at that specific spot.