49. 有關 RS-232 之敘述何者錯誤？ (A) 可連接兩部個人電腦進行資料傳輸 (B) 屬於介面硬體規格 (C) 為並列式傳送 (D) 屬於美國 EIA 規格

5. Which of the following statements is true with respect to Belady's anomaly? (A) Giving more memory to a process will improve its performance. (B) As the number of allocated frames increases, the page-fault rate may decrease for all page replacement algorithms. (C) For some page replacement algorithms, the page-fault rate may increase as the number of allocated frames increases. (D) For some page replacement algorithms, the page-fault rate may decrease as the number of allocated frames increases.

49. 有關 RS-232 之敘述何者錯誤？
(A) 可連接兩部個人電腦進行資料傳輸
(B) 屬於介面硬體規格
(C) 為並列式傳送
(D) 屬於美國 EIA 規格

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