URL rewriting

Which two JSTL URL related tags perform URL rewriting?
a)url
b)link
c)param
d)import
e)redirect

a) is one what is the other?

<%
request.setAttribute("vals",new String[]{"1","2","3","4"});
request.setAttribute("index","2");
%>
which 3 EL expressions are valid and evaluate to "3"?
a)${vals["2"]}
b)${vals.index}
c)${vals[index]}
d)${vals.(vals.index)}
e)${vals[vals[index-1]]}
f)${vals}[index]

thanks in advance

my guesses:

b

a,c,e

Which two JSTL URL related tags perform URL rewriting?
a)url
b)link
c)param
d)import
e)redirect

I think it is a, e.

I think it is: a, c and a, c, f.

1 Question: a,c
2 Question: a,c,e

1 : a,c
2 : a,c,e

What r the correct ans ?

Thanks everyone.The answer for the first question was a and e according to the mock exam.But I felt that that was not right and that c should be the other option.
[ February 10, 2006: Message edited by: Sunjeev Shetty ]

in the jstl specification, it states that <c:redirect> follows the same rewriting rules as defined for <c:url>

So does this mean that c:redirect does url rewriting? like c:url does?

In otherwords that mock answer is correct? a and e?

Because its sort of a contradiction, as it then discusses c:redirect and its all about redirecting to another url. It doesnt seem to have anything to do with url rewriting.

I dont like this question. No idea what the answer is.

We know c:url does url rewriting
and c:param does url encoding. And that c:param can be combined with c:url to do url rewriting and url encoding. But since c:param is url encoding, not url rewriting, i would not select "c:param" as the answer.
So that leaves c:redirect to be the only other possible answer.

So i say a and e.

But what is right?

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