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4260 題 Trung học 8/7/2026
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免費體驗 20 題Which of the following types of malware can self-replicate and spread to other computers through a network without attaching to a host program? 以下哪一種惡意軟件會自我複製，並透過網絡傳播到其他電腦，而無需依附於任何宿主程式？
An employee receives an email claiming to be from a bank, asking the employee to click a link to update account information. Which type of online threat does this represent? 某公司員工收到一封電郵，聲稱來自銀行，要求員工點擊連結更新帳戶資料。這屬於以下哪種網上威脅？
A user received an email with an attachment claiming to be an invoice. After opening it, all files on the computer were encrypted and a message demanded payment in Bitcoin to recover them. This is a ransomware attack. What is the primary attack method of ransomware? 一位用戶收到一封帶有附件的電子郵件，聲稱是發票。打開後，電腦上的所有檔案都被加密，並出現一條訊息要求以比特幣支付贖金才能恢復檔案。這是一次勒索軟件攻擊。勒索軟件的主要攻擊手段是什麼？
A company needs to encrypt a large database of customer records for storage. The IT manager suggests using symmetric key encryption. Which of the following are characteristics of symmetric key encryption? (1) The same key is used for both encryption and decryption (2) It is faster than asymmetric encryption (3) It is suitable for transmitting keys over insecure channels (4) It is commonly used to encrypt large volumes of data 一家公司需要為儲存的大量客戶資料庫進行加密。IT 經理建議使用對稱密鑰加密。以下哪項是對稱密鑰加密 (Symmetric key encryption) 的特點？ (1) 加密和解密使用相同的密鑰 (2) 運算速度比非對稱加密快 (3) 適合在不安全的渠道傳送密鑰 (4) 常用於加密大量數據
In a public key cryptography system, if Ming wants to send an encrypted message that only Hong can read, which key should he use for encryption? 在公開密鑰加密系統 (Public key cryptography) 中，若小明想傳送一封只有小紅能閱讀的加密訊息，他應使用哪把密鑰進行加密？
What is the primary function of a firewall? 防火牆 (Firewall) 的主要功能是什麼？
Which of the following technologies allows a user to securely access a company's internal network over the public Internet? 以下哪種技術能讓用戶透過公共互聯網安全地存取公司的內部網絡？
When you visit a secure website (https://www.example.com), your browser checks the website's digital certificate to verify its identity. Which organisation is responsible for issuing such digital certificates? 當你訪問一個安全網站（https://www.example.com）時，瀏覽器會檢查該網站的數碼證書以驗證其身份。哪個機構負責簽發這類數碼證書？
When shopping online, the browser address bar shows 'https://' and a padlock icon. Which of the following statements are correct? (1) Communication between the website and user is encrypted (2) The website has been issued a digital certificate by a CA (3) The products sold on the website are guaranteed to be genuine (4) SSL/TLS protocol is used for a secure connection 在網上購物時，瀏覽器網址列顯示「https://」及鎖頭圖標。以下哪項陳述是正確的？ (1) 網站與用戶之間的通訊已加密 (2) 該網站已獲核證機關簽發數碼證書 (3) 該網站銷售的產品一定是正貨 (4) 使用了 SSL/TLS 協定進行安全連線
Which of the following measures is most effective in preventing unauthorised users from accessing a wireless network? 以下哪項措施最能有效防止未經授權的用戶存取無線網絡？
Which of the following statements about variables and constants is correct? 以下哪項關於變量 (Variable) 和常量 (Constant) 的陳述是正確的？
A shopkeeper has 17 eggs and plans to pack them into boxes of 5 eggs each. He writes the following code to find how many eggs are left unpacked: result = 17 MOD 5 What is the value of result? 某店主有 17 隻雞蛋，準備每 5 隻裝成一盒。他寫了以下程式碼來找出餘下未能裝盒的雞蛋數目： result = 17 MOD 5 變數 result 的值是多少？
A loyalty program uses the following pseudocode to check if a customer qualifies for a special offer. If the customer's points (x) are greater than 8 and the number of items purchased (y) is less than 5, it outputs "A" (Qualified), otherwise "B". What is the output when x = 10 and y = 3? 一個忠誠計劃使用以下偽代碼檢查客戶是否符合特別優惠資格。如果客戶積分 (x) 大於 8 且購買商品數量 (y) 少於 5，則輸出 "A"（符合），否則輸出 "B"。當 x = 10 且 y = 3 時，輸出是什麼？ x = 10 y = 3 IF x > 8 AND y < 5 THEN OUTPUT "A" ELSE OUTPUT "B" ENDIF
Which programming structure does the following code segment use? 以下程式段使用了哪種程式結構？ count = 0 WHILE count < 5 OUTPUT count count = count + 1 ENDWHILE
What are the contents of array A after the following code segment is executed? 以下程式段執行後，陣列 A 的內容是什麼？ A = [10, 20, 30, 40, 50] A[2] = A[0] + A[4]
A program uses the condition NOT (x > 5 AND y < 10) to check user eligibility. Which Boolean expression is equivalent? 某程式使用條件 NOT (x > 5 AND y < 10) 來檢查用戶資格。以下哪個布林表達式等價於此條件？
What is the value of variable total after the following code segment is executed? 以下程式段執行後，變量 total 的值是什麼？ total = 0 FOR i = 1 TO 4 total = total + i * 2 NEXT i
A teacher wants to find the highest score in a list of student marks. The following code segment is used. What is its purpose? 一位老師想從學生成績列表中找出最高分。以下程式段被使用，它的用途是什麼？ A = [8, 3, 15, 6, 12] result = A[0] FOR i = 1 TO 4 IF A[i] > result THEN result = A[i] ENDIF NEXT i OUTPUT result
A program checks the length of a user-entered string. The following code segment is used. What is the value of variable length after execution? 一個程式檢查用戶輸入字串的長度，使用了以下程式段。執行後，變量 length 的值是什麼？ word = "HI THERE" length = LEN(word)
What is the value of variable s after the following code segment is executed? Assume the MID function uses 0-based indexing (i.e., the first character is at position 0). 以下程式段執行後，變量 s 的值是什麼？假設 MID 函數使用 0-based 索引（即首字元位置為 0）。 word = "COMPUTER" s = MID(word, 3, 4)
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1
Scenario: A fitness centre's management system can display statistical charts of members' …
最多人誤揀：`Relevant`
37% 作答者揀咗呢個錯誤選項 · 此題累計 35 次作答
2
In what manner will the following `HTML` form transmit data to the server? 以下 `HTML` 表單會將…
最多人誤揀：The data will be appended to the `URL` query string, e.g. `/…
33% 作答者揀咗呢個錯誤選項 · 此題累計 36 次作答
3
ABC Airline allows each passenger to carry baggage not larger than 56cm × 36cm × 23cm (H ×…
最多人誤揀：H * W * L <= 56 * 36 * 23
36% 作答者揀咗呢個錯誤選項 · 此題累計 33 次作答
4
Scenario: Why are solid-state drives (`SSD`) commonly used in mobile devices instead of tr…
最多人誤揀：Mobile devices do not support traditional hard disk drives 流…
31% 作答者揀咗呢個錯誤選項 · 此題累計 36 次作答
5
When setting up a home network, what is the function of the DHCP feature on the router? 架…
最多人誤揀：Encrypting communication data on the wireless network 加密無線網絡…
30% 作答者揀咗呢個錯誤選項 · 此題累計 37 次作答
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