D is an example of OAuth not federated log in ,like you use facebook credentials to log in to other sites,C is an examlle of radius,B has nothing.to do with this so A is the only one left,even though this ann be done on other Os not just windows
Answer is D. An example:
in the consumer world, a user might want to use both Google Apps and Twitter. If Google and Twitter establish a federated network for the purpose of authentication and authorization, then the user can log on to Twitter using his or her Google credentials or vice versa.
While SSO lets a single authentication credential access different systems within one enterprise, an FIM system offers single-step access to numerous systems across different organizations. Users, therefore, don't provide credentials directly to a web app, but rather to the FIM system itself. Answer D
Where the difference lies
The key difference between SSO and FIM is while SSO is designed to authenticate a single credential across various systems within one organization, federated identity management systems offer single access to a number of applications across various enterprises.
So, while SSO is a function of FIM, having SSO in place won’t necessarily allow for federated identity management. That said, bot, Correct Answer A
Federated access management or Federated identity management (FIM) is an arrangement that can be made between multiple enterprises to let subscribers use the same identification data to obtain access to the networks of all the enterprises in the group. The use of such a system is sometimes called identity federation.
There are three major protocols for (FIM): OpenID, SAML and OAuth.
I believe the answer should br A.
From Darill Gibson's book: A federated identity links a user’s credentials from different
networks or operating systems, but the federation treats it as one
identity.
The optiok D imo sounds like SSO not federation.
The key difference between SSO and FIM is while SSO is designed to authenticate a single credential across various systems within one organization, federated identity management systems offer single access to a number of applications across various enterprises.
After lots of brainstorming guys I believe the given answer is correct. ****Please dismiss what I mentioned earlier.****** Here's a better explanation:
Imagine
two web sites hosted by two different organizations. Normally, a user would
have to provide different credentialsto access either web site. However, if the
organizations trust each other, they can use SAML as a federated identity
managementsystem. Users authenticate with one web site and are notrequired
to authenticate again when accessing the second web site.
**** PLEASE READ****
Given answer is correct:
https://www.okta.com/identity-101/federated-identity-vs-sso/
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