20. 如右圖 pnp 電晶體電路(VBE=0.7V，β=75)，請求出 Ic =？ (A) 0.1mA (B) 0.2mA (C) 0.3mA (D) 0.4mA

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.

20. 如右圖 pnp 電晶體電路(V_BE=0.7V，β=75)，請求出 Ic =？

(A) 0.1mA
(B) 0.2mA
(C) 0.3mA
(D) 0.4mA

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