A technician connects a Cisco Aironet 3700 Series access point to a switch and realizes that the AP is coming up with 3×3 MIMO. Which reason explains this behavior?
A. A redundant power supply is unavailable on the switch.
B. The switch is 802.3af capable.
C. The AP is getting power from a power injector.
D. The switch is PoE+ capable.
The access point is downgraded to 3×3 when it is connected to a 15.4W supply. For the
access point to operate at its full potential, using an 802.3at PoE switch or AIR-PWRINJ4
power injector is recommended.
Cisco Aironet 3700 Series Access Points – GETTING STARTED GUIDE
4×4:3 = 802.3at POE+
3×3:3 = 802.3af POE
Answer is B. If the switch was Poe+ this ap would run at 4×4 mimo