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DTD mock questions

 
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Please explain the answers to these questions.
Thanks

3. Which of the following code is valid?


a)<!DOCTYPE test [ <!ELEMENT test (#PCDATA)>]>
b)<!DOCTYPE test [ <!ELEMENT test.dtd (elm1|elm2|#PCDATA) >]>
c)<!DOCTYPE test [ <!ELEMENT test.dtd (#PCDATA|elm1|elm2)* >]>
<!ELEMENT elm1 (#PCDATA)>
<!ELEMENT elm2 (#PCDATA)>
d)<!DOCTYPE test [ <!ELEMENT test test (#PCDATA)>]>
e)<!DOCTYPE test [ <!ELEMENT test "test" (#PCDATA)>]>


Which of the following code is valid
a) <!ENTITY test "(#PCDATA)" >
<!ELEMENT elm1 &test;>
b) <!ENTITY lt "*(&5;#">
c) <!ENTITY test elm "elm1">
d) <!ENTITY test SYSTEM "elm">
e) <!ENTITY %test "(#PCDATA)">
<!ELEMENT elm1 %test;>


Dhiren
 
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