RSA Authentication Manager and RADUIS- Two scenarios

Kindly look at this link below (i know it is oracle) , you can see the Oracle server has got another name which is RADUIS client as well
http://www.stanford.edu/dept/itss/do...2/asoradus.htm
Figure 5-1
1- Does the similar concept apply to VPN and RADUIS and SecureID (Token) ?(i.e. VPN is Raduis client )

2- In the diagram below :
http://www.auckland.ac.nz/security/i...FAReportv1.pdf
Which one is RADUIS server and Which one is RSA ACE/Server ? My guess is the middle is RADUIS server,,,,Am I right ?.

3- if I have got cisco RADUIS server , do I need to use RSA ACE/Server as well , because RADUIS does support two-way factors Authentication

Quote:

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RADIUS is a two-factor authentication method based on something you know

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https://www.gotomypc.com/help/using_...ntegration.htm