A first traffic flow directed to a first wireless device is received. The query governor uses a network monitor to gather network status information to determine how to govern query execution. The fastening element includes a body disposed on the casing, a first locking part extending from the second locking part to between the cantilever part and the locking seat, and a second locking part extending from the body onto the cantilever part. The protrusion is configured for engaging eyeglasses worn by a wearer when the article is affixed to the wearer’s nose to thereby inhibit the eyeglasses from slipping down the wearer’s nose.