Which design limitation of dual-band WLAN must be considered when end-user devices stream real-time applications and services utilizing dual-band SSID?
A. It can cause packet loss in the real-time path
B. It can cause jitter and degrade overall network throughput
C. It can cause short-term signal loss from collisions
D. It can cause gaps in the real-time traffic path
Thanks TM, good information!
D is correct
In dual-band WLANs (WLANs with both 2.4 GHz and 5 GHz bands), devices can roam between
802.11b/g/n and 802.11a/n with the same service set identifier (SSID), provided the RToWLAN endpoint
is capable of supporting both bands. However, with some devices, a dual-band WLAN can cause gaps in
the real-time traffic path. To avoid these gaps, use only one band for real-time traffic applications and
services.
https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/RToWLAN/CCVP_BK_R7805F20_00_rtowlan-srnd/CCVP_BK_R7805F20_00_rtowlan-srnd_chapter_01.pdf