試卷名稱:110年 - [無官方正解]109 國立清華大學_碩士班考試入學試題_資訊安全研究所:資訊安全#130996
年份:110年
科目:研究所、轉學考(插大)◆資訊安全概論
3. Why is delay-based filtering effective against spam?
(A) Spam generators will not send spam if they cannot do it immediately.
(B) Spam generators do not wait for the SMTP banner.
(C) Spam generators are poorly behaved and will quickly move on to the next server.
(D) Spam generators has a very short TTL value.