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which mechanism is build in HTTP?

 
Greenhorn
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Hi, every one,
When I do some exercise,I meet this question about HTTP:
<===========================================
5. Identify the authentication mechanisms that are built into the HTTP specification.
(Select two)
a Basic
b Client-Cert
c FORM
d Digest
e Client-Digest
f HTTPS
Answers: a and d
===========================================>
My doubt is the answer d & f, as we know, not all the browers support Digest,so if it is "build in" HTTP,how this happen?
I think the HTTPS should be right,since its similitude name.
 
Ranch Hand
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hi!
I think answers (a) and (c) should be correct as Form based authentication is built-in in Http.
 
Ranch Hand
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Basic and digest are the correct answers.
These are built in HTTP1.1

Do not go on name similarity here.

Basic and Form seem to be the right options. But Digest is built into HTTP1.1. Not Form based authemtication. I do wonder it can be included in which category.

Anyone knows the answer?

Regards,
Leena
 
Ranch Hand
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According to what I understand, FORM based authentication is a convinience extension of BASIC that is provided by the Servlet Container. FORM internally uses BASIC authentication but provides you a wrapper to use a custom form.
Please correct me if I am wrong!
 
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