A client has just leased a new office space in a busy commercial building and would like to install a wireless network. Several other tenants are on the same floor. Multiple wireless networks are…

A client has just leased a new office space in a busy commercial building and would like to install a wireless network. Several other tenants are on the same floor. Multiple wireless networks are present in the building. Which of the following can be changed on the client's wireless network to help ensure that interference from other wireless networks is at a minimum?