Go back to 300-070 - Implementing Cisco IP Telephony and Video, Part 1 (CIPTV1)

Question :-

Which type of IOS Conference bridge requires all users to use the same video format in order to participate in a video conference?
Ad Hoc Conferencing
Homogenous Conferencing
Heterogenous Conferencing
Guaranteed Audio Video Conferencing
Meet-Me Conferencing

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