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After the SOA in a named forward zone file with an origin of hello.com, which of the following lines would create:
A.

            1D IN NS 10.0.1.2.

            A www.hello.com.

ns1         1D IN CNAME 10.0.1.2.

www         1D IN CNAME 10.0.1.1.

B.

              1D IN NS ns1.hello.com

              CNAME www.hello.com

ns1.hello.com 1D IN A 10.0.1.2

www.hello.com 1D IN A 10.0.1.1

C.

            1D IN NS ns1

            CNAME www

ns1         1D IN A 10.0.1.2

www         1D IN A 10.0.1.1

D.

            1D IN NS ns1.hello.com.

hello.com   CNAME www

ns1         1D IN A 10.0.1.1

www         1D IN A 10.0.1.2

E.

            1D IN NS ns1.

            CNAME www.

ns1.        1D IN A 10.0.1.2

www.        1D IN A 10.0.1.1

Incorrect Answer Trailing dots at the end of an IP number is an error.
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Incorrect Answer The trailing dot at the end of a hostname stops the origin name being added to the names. We really need ns1.hello.com to be ns1.hello.com. and not ns1.hello.com.hello.com., so the trailing dots are needed here.
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Correct Answer Good.
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Incorrect Answer Here hello.com does not have a trailing dot, and is likely to be rewritten as hello.com.hello.com., which would be incorrect.
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Incorrect Answer The trailing dot after ns1 (etc) stops the origin name being added to the names. We really need ns1 to be ns1.hello.com, so the trailing dots are errors.
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