You are setting up a wireless network in your small office using an older router that supports IEEE $802\mathrm{.}11$b$.$ You notice that the Wi$-$Fi signal is interfering with other wireless devices in the office.

To minimize interference, you decide to configure the router to use one of the recommended non$-$overlapping channels.

Which channel should you choose?

answer

Channel $13$

Channel $3$

Channel $6$

Channel $9$