用戶【黎慶噎】點評問題和點評內容

【評論主題】24. For sorting n integers, which of the following statements is true?(A) Both quick sort and merge

【評論內容】

答案為(D)

(A):quick sort worst-case time O(n^2)

(B)quick sort is not stable sorting

(C)both need extra space

(E)heap don't need extra space

【評論主題】8. Which of the following expression is different from the others if A: True, B: False, C: False, D:

【評論內容】(A) False(B) True(C).....★★★★★★,...

【評論主題】7. For the sorting methods with the same time complexity in best, average and worst cases in the fol

【評論內容】(E)Selection sortQui☆☆ ...

【評論主題】6. Which of the following number is the largest one?(A) 11011011 in 2's complement(B) 10010110

【評論內容】答案為(B)全部換成10進位:(A)-37(........

【評論主題】5. For recursion, a function fib( ) is defined to compute the Fibonacci number. How many times the f

【評論內容】(A)若Fib(n) = Fib(n-2) + ☆☆☆(☆-1) +1...

【評論主題】8.Which of the following feature is not included in the OOP?(A) Abbreviation(B) Encapsulation(C) Inh

【評論內容】

(A)

物件導向程式設計的三大特性

Encapsulation(封裝)

Inheritance(繼承)

Polymorphism(多型)

【評論主題】19. What are the two main components of the disk access time in disk scheduling?(A) Seek time(B) DMA

【評論內容】Disk存取時間由三部分加總而成:1.S☆☆☆ ...

【評論主題】9. To make better use of the computer's resources, an operating system can give(A) higher (B) l

【評論內容】(A)higher首先要先搞清楚I/O ☆☆☆☆☆★ ...

【評論主題】22.在CPU執行速度為2000MIPS的電腦中,机行10000個指令的程式要花多少時間?(A) 0.2ns (B) 5ns(C) 0.2us (D) 5us

【評論內容】(D)MIPS意思為每秒可以執行多少百萬★★★(...

【評論主題】24.將資料在網路上傳送時,防範機密資訊外洩的最主要方法是下列何者?(A)使用防火牆 (B)設定安全層級(C)將傳輸資料加密 (D)將傳輸資料壓縮

【評論內容】

(A)防火牆主要目的在於阻止未經授權的存取或是駭客入侵內網的威脅

(B)安全層級像是家裡的門鎖,太簡單則很容易被入侵,與題目說的資料在網路上傳送無關

(C)若有人攔截封包,加密可以使擷取的人無法讀出傳送方想表達的訊息。

(D)壓縮主要目的是降低讓檔案變小,降低傳輸的負荷

【評論主題】21.下列程式語言何者不支援物件導向?(A) C (B) C++ (C) JAVA (D) VB

【評論內容】

(A)

其他都是物件導向語言