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Except for internal networks involve identical operating systems, whose identification protocol is the same, all legacy multi-system networks need software emulators to communicate.
(A) Except for internal networks involve identical operating systems, whose identification protocol is the same
(B) As well as internal networks involving identical operating systems with the same identification protocol
(C) Unless internal networks involve identical operating systems, which have the same identification protocol
(D) In addition to an internal network between identical operating systems with the same identification protocol
(E) Together with internal networks between identical operating systems, whose identification protocol is the same
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(A) Except for internal networks involve identical operating systems, whose identification protocol is the same
I don't see any problem with A .Keep it
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(B) As well as internal networks involving identical operating systems with the same identification protocol
As well as-wrong \(Plus\)parallelism error so eliminate it.
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(C) Unless internal networks involve identical operating systems, which have the same identification protocol
It changes the meaning.I think the original sentence is not a conditional statement .eliminate it.
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(D) In addition to an internal network between identical operating systems with the same identification protocol
We don't know whether there are 2 identical systems or many identical systems so cannot use between.eliminate it
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(E) Together with internal networks between identical operating systems, whose identification protocol is the same
same as D.eliminate it
Answer is A.
Please correct me if I am wrong