When we wantto store music in a computer, the audio signal must be .
(A)sampled and quantized, (B)quantized and coded, (C)sampled and coded,
(D)sample, quantized and coded.
參考解答: D
說明: 儲存音樂檔,將類比訊號轉為數位方式儲存使用PCM(Plus Code Modulation):
Sampling(取樣)→Quantization(量化)→Coding(編碼)
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5.
The is themain circuit board of the computer.
(A)motherboard (B)chassis (C)control unit (D)processor (E)USB
參考解答: A
說明: 此敘述指的是主機板。
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6.
A high-speed networkis capable of transmitting 100Mbits per second. Consider a video file of 300Gbytes. How long does
it take to transmit the file without considering the overhead?
(A)300 seconds (B)3000 seconds (C)2400 minutes (D)400 minutes (E)None of the above
參考解答: D
說明: 300GB/100Mb = 2400sec
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7.
Normally, a “64-bit”computer means the size of which one is 64-bit?
(A)hard-disk (B)register (C)color depth (D)DRAM bandwidth
參考解答: D
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8.
Which one isincorrect?
A. High-level languages look much similar to everyday English compared to assembly language
B. The mainboard is the central PCB in a system devices, where processors and main memory are attached
C. graphics card contains a coprocessors that executes special-purpose instructions, like drawing graphs
D. dynamic RAM (DRAM) doesn't require refresh circuit
E. machine language consists of streams of numbers (1s and 0s) that instruct computers how to perform elementary
operations
F. cache inside CPU can speed up the execution of disk access
參考解答: D
說明: DRAM採電容需要更新電路,SRAM採正反器不需更新電路.
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9.
Please briefly describethe difference between a complex instruction set computer (CISC) architecture and a reduced
instruction set computer (RISC) architecture.
參考解答:
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RISC CISC
指令數目少 指令數目多
定址模式少 定址模式多
指令長度固定 指令長度不一
使用硬體線路控制方式製作,故速度較快 採用微程式控制方式製作,故較有彈性
配合pipeline(管線技術)及superscalar(超純量)
效果佳
較RISC差
Register多 Register少
10.
How does cachememory speed up the computer?.
參考解答:
Caching的機制就是將經常使用的data預先存放於cache memory當中,以利日後的執行。
主要緩衝cpu及memory間速度之差異,藉由將常使用的data放於cache memory,如此
cpu可對較高速的cache memory,避免面對較低速的main memory。
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11.
What is dataremanence? Please explain why it is still possible to recover overwritten data.
參考解答: D
說明:
(1)資料剩磁(data remanence):指資訊裝備報廢時,因未消磁而洩密。即使重新格式化的磁碟也
可能被精密工具讀出部分剩磁。
(2)
• 許多操作系統,文件管理器和其他軟件提供了其中一個設施的文件不會馬上被刪除,該文件會
被移動到一個固定區域,允許用戶輕鬆地恢復了一個錯誤。
• 或是當儲存媒體被重寫,其媒體的”物理性質”可允許的先前內容的恢復。
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創新=借用與連結-《賈柏斯》
你借用考古題,去連結你的學習...
12.
data compression. Whyis it still an important consideration for software developers nowadays?.
參考解答:
資料壓縮的原因:
• 做為備份及歸檔文件:若平時不需使用或基於安全作為備份,可將資料壓縮並保存,如此ㄧ來能節省所使用之空間。
• 文件傳輸:資料壓縮能夠減少文件之大小,以減少傳輸所需的時間。
• 電子郵件之限制:電子郵件的夾帶檔案有大小限制,若能透過資料壓縮技術,能減少文件大小,順利夾帶檔案。
• 加密與保護:透過單一密碼保護的方法,被壓縮之資料可達保密性。
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13.
Biometric automatic datacapture technology:
(A)is used on forms for objective-based questions on exams.
(B)requires the user or customer to carefully handwrite input data on a business form.
(C)is most widely used in the banking industry.
(D)is based on unique human characteristics or traits, for example, fingerprints, voice pattern,
retinal pattern.
(E)is based on the use of radio frequency, a tag and antenna to identify and track physical objects.
參考解答: D
說明: 此為生物辨識考題,現在辨識還包含眼球辨識..臉部面試等
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14.
means that theuser is unaware of operations that are not directly related to what he or she wishes to do.
(A)plug-and-play (B)hot swap (C)security measures (D)transparency (E)real-time.
參考解答: D
說明: 此為透通性的描述,指的是使用者不需要知道實作細節。
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15.
All instructions anddata must be copied to before the CPU can access and process them.
(A)ROM (B)RAM (C)ALU (D)CPU (E)none of these
參考解答: B
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Which of thefollowing is/are not one of the six logical units of a computer?
(A)Input unit. (B)Output unit. (C)Central processing unit. (D)Printer.
參考解答: D
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