Programming Concepts FC0-U71 Practice Questions (Page 6)

Questions 26–30

1. 26expert · medium

   A developer needs to search for a specific name in a sorted list of 1,000,000 names. The program will perform this search many times. Which algorithm is most efficient for this repeated search operation?

   • ABinary search, because it is O(log n) and works on sorted lists.
   • BLinear search, because it is simple and works on any list.
   • CBubble sort, because it will sort the list and then the search will be faster.
   • DA recursive function that checks the first and last elements.
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2. 27foundation · easy

   Which control structure is best suited for repeating a block of code a known number of times?

   • ASwitch statement
   • BVariable declaration
   • CFor loop
   • DIf-else statement
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4. 28application · easy

   A developer is writing a program that needs to calculate the area of a rectangle multiple times with different dimensions. To avoid repeating the same formula, they decide to create a function. What is the primary benefit of this approach?

   • AIt automatically handles errors in the calculation.
   • BIt allows the program to use less memory.
   • CIt makes the program run faster.
   • DIt reduces code duplication and improves maintainability.
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5. 29expert · medium

   A developer needs to process a list of customer orders. Each order has a status: "pending", "shipped", or "delivered". The program should count how many orders are in each status. Which control structure is most efficient and readable for this task?

   • AA series of if-else statements that check each order's status.
   • BA recursive function that processes one order at a time.
   • CA switch statement inside a loop that increments a counter for each status.
   • DA while loop that iterates until the list is empty.
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6. 30application · easy

   A programmer is writing a function that calculates the average of a list of test scores. The scores are whole numbers, but the average must be precise to two decimal places. Which data type should the function's return value be?

   • AInteger
   • BBoolean
   • CFloat
   • DString
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