[{"data":1,"prerenderedAt":45},["ShallowReactive",2],{"q-fintech-22-046":3},{"exam":4,"examName":5,"chapterSlug":6,"question":7,"related":22},"fintech","金融科技力知識檢定","c5",{"id":8,"exam":4,"session":9,"qno":10,"question":11,"options":12,"answer":17,"chapter":18,"freq":19,"explanation":20,"difficulty":21},"fintech-22-046","22",46,"下列何者屬於區塊鏈共識演算法的主要運算目的？",[13,14,15,16],"將點對點架構中的成員予以匿名","提升資料庫的安全性","以有效率的方式將交易記錄存入資料庫","協調鏈上所有參與者達成共識",3,"區塊鏈",1,"區塊鏈由眾多互不隸屬的節點共同維護同一本帳,共識演算法(如工作量證明 PoW、權益證明 PoS)的主要目的,就是在沒有中央機構的情況下,讓鏈上所有參與者對「哪些交易有效、下一個區塊由誰寫入」達成一致,確保各節點帳本相同,故 (D) 正確。(A) 匿名性來自以公鑰位址代替真實身分,非共識演算法的目的;(B) 資料安全主要靠雜湊與數位簽章;(C) 共識機制為了去中心化常犧牲效率,如 PoW 耗時耗能,有效率寫入並非其主要目的。","medium",[23,27,31,35,39,42],{"id":24,"question":25,"qno":26},"fintech-19-009","2009 年 1 月 3 日中本聰建立了第一個比特幣區塊，俗稱創世區塊。而這個創世區塊的序號是下列何者？",9,{"id":28,"question":29,"qno":30},"fintech-19-010","目前 ICO 最著名的成功案例為下列何者？",10,{"id":32,"question":33,"qno":34},"fintech-19-014","依據 CoinMarketCap 網站資料，目前市值前兩大的加密貨幣為下列何者？",14,{"id":36,"question":37,"qno":38},"fintech-19-045","比特幣區塊鏈所使用的的「單向函數」是使用下列何種技術？",45,{"id":40,"question":41,"qno":10},"fintech-19-046","有關區塊鏈技術之敘述，下列何者正確？",{"id":43,"question":44,"qno":26},"fintech-20-009","有關比特幣的資料，下列何項是不能公開的？",1793070566365]