On the2.4 GHzband, onlythree non-overlapping channelsexist:1, 6, and 11.
Inhigh-density WLAN scenarios, channels like1, 5, 9, and 13can be used withlower transmit powerto reduce co-channel interference - though they slightly overlap, they can work in dense deployments when managed properly.
On the5 GHzband, there are many non-overlapping channels. It's recommended tostagger high and low channelsamong adjacent APs toavoid interference.
Correct answer: A. TRUE

Understanding 802.1X Authentication in Enterprise Networks
#What is 802.1X?
802.1X is a network access control (NAC) protocol that enforces authentication before allowing a device to connect to a LAN.
It usesEAP (Extensible Authentication Protocol)overRADIUSfor user verification.
Typically deployed incorporate and campus networksforsecure wired and wireless access.
#How Does 802.1X Work?
1##Client (Supplicant) # Requests network access.
2##Switch (Authenticator) # Forwards request to RADIUS server.
3##RADIUS Server # Verifies credentials & grants access.
Mandatory Steps to Enable 802.1X on SW3
#A. Configure an AAA Scheme
Defines authentication, authorization, and accounting (AAA) methods.
Links802.1X authentication to the RADIUS server.
#B. Configure an Authentication Profile
Specifies how authentication is handled on the switch.
Associates802.1X authentication with an AAA scheme.
#C. Configure an Authentication Domain
Groups authentication policies for different user types.
MapsAAA scheme to user login requests.
#D. Configure an 802.1X Access Profile
Applies 802.1X authentication to specific switch ports (GE0/0/2 & GE0/0/3).
Ensures thatonly authenticated users can pass traffic.
Why Are All Four Steps Necessary?
#Each step plays a critical role in enabling 802.1X authentication and linking it to the RADIUS server.
#Without any one of these configurations, the 802.1X authentication process would fail.
Real-World Application:
Enterprise Wired Security:Ensures thatonly authenticated devicesaccess corporate networks.
University Campuses & Public Wi-Fi:Prevents unauthorized access tosecure LAN environments.
#Reference:Huawei HCIE-Datacom Guide - 802.1X Authentication & RADIUS Server Configuration