High Identity Question 130 of 215

How do you support external login providers?

ASP.NET MVC · Speak this in 60–90 seconds · Faridabad & Delhi NCR

Train 70%Val 15%Test 15%

Fit on train, tune on val, report on test once.

Add OAuth handlers for Google or Microsoft, store logins in AspNetUserLogins, and link accounts carefully.

Why interviewers care about Identity:

This is a process

question about Identity.

Panels listen for order,

trade-offs, and what you would actually do on a .NET MVC project - not buzzwords.

Stay structured

Name the idea, why it exists, then one short example.

Close cleanly

End with when you use it and one common pitfall.

Before you speak the answer, walk the interviewer through these steps:

1
Add OAuth handlers for
Google or Microsoft, store logins in AspNetUserLogins, and link accounts carefully.
2
Why it exists
Email confirmation still matters.
3
Account takeover via linking
is a threat to test.
4
Give an example
One tiny concrete case you can say aloud.
5
Common mistake
What juniors usually get wrong.
6
Close
When you pick this over the alternative.

Here's a short line you can speak, broken into clear beats:

Say this line

“Email confirmation still matters.”

Break into beats

Emailconfirmationstillmatters

Speaking order

29874083374716

Note: Adapt this scaffold to your own project — keep it under 60–90 seconds.

Add OAuth handlers for Google or Microsoft, store logins in AspNetUserLogins, and link accounts carefully. Email confirmation still matters.