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今の多くのIT者が参加している試験に、WGUのFoundations-of-Computer-Science認定試験「WGU Foundations of Computer Science」がとても人気がある一つとして、合格するために豊富な知識と経験が必要です。WGUのFoundations-of-Computer-Science認定試験に準備する練習ツールや訓練機関に通学しなればまりませんでしょう。Pass4Testは君のもっともよい選択ですよ。多くIT者になりたい方にWGUのFoundations-of-Computer-Science認定試験に関する問題集を準備しております。君に短い時間に大量のITの専門知識を補充させています。
| Section | Weight | Objectives |
|---|---|---|
| Computer Architecture & Organization | 15% | - Von Neumann architecture - Memory hierarchy and performance - CPU, memory, I/O systems - Instruction sets and execution cycles |
| Algorithms & Complexity | 25% | - Algorithm design and analysis - Sorting and searching algorithms - Recursion and iterative structures - Big O notation, time and space complexity |
| Data Structures | 20% | - Data storage and retrieval principles - Primitive and composite data types - Arrays, linked lists, stacks, queues - Trees, graphs, hash tables |
| Software Engineering & Programming Basics | 15% | - Basic syntax and control structures - Testing and debugging fundamentals - Programming paradigms - Software development lifecycle |
| Discrete Mathematics & Logic | 25% | - Propositional and predicate logic - Set theory, relations, functions - Boolean algebra and digital logic - Proof techniques and mathematical induction |
>> Foundations-of-Computer-Science模擬トレーリング <<
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質問 # 17
Which aspect is excluded from a NumPy array's structure?
正解：D
解説：
A NumPy ndarray is designed for efficient numerical computing, and its structure is defined by metadata required to interpret a contiguous (or strided) block of memory as an n-dimensional array. Textbooks and NumPy's own conceptual model describe key components such as: adata buffer(where the raw bytes live), a data pointer(reference to the start of that buffer), thedtype(which specifies how to interpret each element's bytes-e.g., int32, float64), theshape(the size in each dimension), andstrides(how many bytes to step in memory to move along each dimension). Together, these allow fast indexing, slicing, and vectorized operations without Python-level loops.
Options A, B, and C are all part of what an array must track to function correctly: the array must know where its data is, how it is laid out (shape/strides), and how to interpret bytes (dtype). In contrast, anencryption key is not a concept that belongs to the internal representation of a numerical array. Encryption is a security mechanism applied at storage or transport layers (for example, encrypting a file on disk or encrypting data sent over a network), not something built into the in-memory structure of a NumPy array object.
Therefore, the aspect excluded from a NumPy array's structure is the encryption key.
質問 # 18
What is another term for the inputs into a function?
正解：B
解説：
In programming, a function takes inputs, performs computation, and may return an output. The standard term for a function's inputs isarguments(also commonly discussed alongside the closely related termparameters).
Textbooks typically distinguish the two:parametersare the names listed in the function definition, while argumentsare the actual values supplied when the function is called. For example, in def f(x, y):, x and y are parameters. In the call f(3, 5), 3 and 5 are arguments. Many introductory materials use "arguments" informally to refer to the inputs overall, which matches the wording of this question.
Options A, B, and C do not fit the textbook definition. "Variables" is too broad; inputs can be literals, expressions, or variables, but the conceptual role is "arguments." "Procedures" are callable units of code (often used in some languages to mean functions without return values), not the inputs. "Outputs" refers to returned results, not what you pass in.
Understanding arguments is important because it connects to call semantics, scope, and correctness.
Different languages support positional arguments, keyword arguments, default values, and variadic arguments (e.g., *args, **kwargs in Python). This flexibility shapes API design and influences how programmers structure reusable code.
質問 # 19
Which action is taken if the first number is the lowest value in a selection sort?
正解：C
解説：
Selection sort works by maintaining a boundary between a sorted prefix and an unsorted suffix. On each pass, the algorithm finds the smallest value in the unsorted portion and places it into the first position of that unsorted portion (which is also the next position in the sorted prefix). This is usually done by swapping the element at the minimum's index with the element at the boundary index (the "first unsorted element"). That description matches option D.
If the first element of the unsorted portion is already the smallest, then the minimum's index equals the boundary index. In textbook implementations, the algorithm may still execute a swap operation, but it becomes a swap of an element with itself (a no-op), leaving the array unchanged. Many implementations include a small optimization: perform the swap only if the minimum index differs from the boundary index.
Either way, conceptually the "action taken" by selection sort is still "swap the selected minimum into the first unsorted position," which is exactly what option D states.
Options A and B are unrelated to sorting; selection sort never increases or duplicates values. Option C is incorrect because selection sort swaps the minimum with thefirstunsorted element, not the last. After the swap (or no-op), the sorted region grows by one element, and the algorithm repeats from the next boundary position.
This logic is fundamental for understanding how selection sort ensures correctness: after pass i, the smallest i+1 elements are fixed in their final positions.
質問 # 20
print(20 # 5)
What will the output be of this line?
正解：B
解説：
In Python, the # character begins acomment. Everything from # to the end of the line is ignored by the interpreter and is not executed. Therefore, the line # print(20 # 5) producesno outputbecause it is a comment, not an executable statement. This is a standard concept in programming language textbooks: comments are for humans, not for the machine, and they are used to document code, explain intent, temporarily disable statements during debugging, or leave notes about assumptions and design choices.
Even though the line contains an unusual symbol #, it does not matter here, because the interpreter never tries to parse the commented text. If the # were removed, then Python would attempt to parse print(20 # 5), and since # is not a valid Python operator, that would indeed trigger a syntax error. But with the leading #, the entire line is inert.
Option A is incorrect because nothing is evaluated. Option C is incorrect because comments are not printed; they remain only in the source code. Option D is incorrect for the commented version of the line, since Python does not check comment contents for syntax. Thus, the correct result is no output.
質問 # 21
What is the expected result of running the following code: list1[0] = "California"?
正解：B
解説：
Python lists are mutable sequences, which means elements can be changed in place after the list has been created. The expression list1[0] = "California" uses indexing to target the element at position 0 (the first element, because Python uses zero-based indexing) and assignment (=) to replace that element with a new value. As a result, the list keeps the same length, but its first entry becomes "California".
This operation does not create a new list (so option A is incorrect); it modifies the existing list object referenced by list1. It also does not append to the end of the list (so option C is incorrect). Appending would use methods like list1.append("California"). Option D is not meaningful in Python list semantics; assignment to a single index replaces exactly one element rather than "adding a second element to the line." Textbooks highlight this difference between mutable and immutable sequence types. For example, strings are immutable, so you cannot assign to some_string[0]. Lists, however, are designed for collections that change over time, supporting updates, insertions, deletions, and reordering. Index assignment is fundamental for many algorithms: updating an array-like buffer, modifying a dataset row, replacing incorrect values, or implementing in-place transformations efficiently.
質問 # 22
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