Exam 70-486 topic 1 question 91 discussion

Actual exam question from Microsoft's 70-486

Question #: 91
Topic #: 1

You develop an ASP.NET MVC application. The application is configured for claims-based authentication by using Windows Identity Foundation (WIF).
You need to access the claims in the WIF token.
Which code segment should you use?

A. Thread.CurrentPrincipal.Identity;
B. ((IClaimsPrincipal)Thread.CurrentPrincipal).Identities[0].Claims;
C. Thread.CurrentPrincipal;
D. ((IClaimsPrincipal)Thread.CurrentPrincipal).Identities[0].IsAuthenticated;

Show Suggested Answer

Suggested Answer: B 🗳️
To Access the Claims -
In order to access identity related information, you can run FedUtil. Once you have run FedUtil, your application can access IClaimsPrincipal and IClaimsIdentity using the standard ASP.NET constructs as shown in the following code example: void Page_Load(object sender, EventArgs e)
{
// Cast the Thread.CurrentPrincipal
IClaimsPrincipal icp = Thread.CurrentPrincipal as IClaimsPrincipal;
// Access IClaimsIdentity which contains claims
IClaimsIdentity claimsIdentity = (IClaimsIdentity)icp.Identity;
// Access claims
foreach(Claim claim in claimsIdentity.Claims)
{
. . .
}
}
References:
https://msdn.microsoft.com/en-us/library/ee517271.aspx

by hungry_ape9000 at May 12, 2020, 8:10 p.m.

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hungry_ape9000

Highly Voted 5 years, 1 month ago

FINAL ANSWER: B is correct Don't forget null checks though, potential null exceptions or out of range exceptions too.

upvoted 7 times

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