Wouldn't it Be Stem ?
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Answer:
The longest codeword that could possibly be for "n" symbol is n-1 bits.
Explanation:
From the given information:
Suppose we are to consider a set of frequencies
, for which f is a symbol for the length n. Therefore, the longest codeword that could possibly be for "n" symbol is n-1 bits.
However, during the encoding for "n" in conjunction with n-2, then the possibilities for n are; 
We can conclude that the longest codeword that could possibly be for "n" symbol is n-1 bits.
I hope that this answer will help u to solve your problem. But u have tto take the importance clues only .
The answer is DMNNAMSVR. While in an interactive nslookup session, one would use the DMNNAMSVR keyword to change the DNS server one is using.