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| Section | Weight | Objectives |
|---|---|---|
| Data Structures | 20% | - Data storage and retrieval principles - Arrays, linked lists, stacks, queues - Primitive and composite data types - Trees, graphs, hash tables |
| Computer Architecture & Organization | 15% | - Von Neumann architecture - Instruction sets and execution cycles - CPU, memory, I/O systems - Memory hierarchy and performance |
| Discrete Mathematics & Logic | 25% | - Set theory, relations, functions - Propositional and predicate logic - Proof techniques and mathematical induction - Boolean algebra and digital logic |
| Algorithms & Complexity | 25% | - Algorithm design and analysis - Big O notation, time and space complexity - Recursion and iterative structures - Sorting and searching algorithms |
| Software Engineering & Programming Basics | 15% | - Testing and debugging fundamentals - Basic syntax and control structures - Software development lifecycle - Programming paradigms |
>> Latest Foundations-of-Computer-Science Exam Notes <<
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NEW QUESTION # 70
Which Python function would be used to check the data type of a variable bmi?
Answer: B
Explanation:
Python provides the built-in function `type()` to determine the data type (more precisely, the class) of an object. Because Python is dynamically typed, variable names are references to objects, and the object itself carries its type information at runtime. Calling `type(bmi)` returns a type object such as `<class 'int'>`, `<class
'float'>`, or `<class 'str'>` depending on what value is currently bound to the name `bmi`. This is the standard, textbook-approved method for checking an object's type in Python.
Option C, `typeof(bmi)`, is common in JavaScript, not Python. Options A and B are not standard Python built- ins; they might exist in user code or other languages, but not in Python's core language. In typical coursework and professional usage, `type()` is the correct function.
Textbooks also discuss how `type()` differs from `isinstance()`. While `type()` directly reports the object's class, `isinstance(bmi, float)` is often preferred when you want to allow subclass relationships. For example, in object-oriented programming, a subclass instance should often be treated as an instance of its parent class, which `isinstance` supports. However, when the question asks specifically for the function used to "check the data type," the expected answer is `type()`.
# Understanding type inspection helps with debugging, writing robust functions, and reasoning about operations that are valid for different data types.
NEW QUESTION # 71
What is the only content that will display if the List folder contents permission is not enabled for a particular folder in Windows 11?
Answer: C
Explanation:
In Windows file security (NTFS permissions), "List folder contents" controls whether a user cansee the names of files and subfoldersinside a folder. If a user does not have permission to list a folder, Windows prevents directory enumeration: the user cannot browse the folder and view what is inside. (2BrightSparks) This is a key concept in access control: it separates "being able to traverse to a location" from "being able to see what is stored there." When "List folder contents" is not enabled, the user typically cannot view the list of files regardless of whether individual files might have separate permissions. In standard user-facing behavior, what remains visible in the folder's properties and metadata is limited; among the choices given, the only item that is reliably a folder-level metadata attribute (and not a listing of contents) is the folder'screation date. The
"author" is not a universal, reliably displayed NTFS folder property, and options C and D talk about files (contents), which cannot be listed without the list permission. (2BrightSparks) This reflects a broader textbook principle: operating systems enforce access control both on objects (files/folders) and on operations (read data, write data, list directory). Removing the list operation blocks visibility of contents, even if other permissions exist elsewhere.
NEW QUESTION # 72
Which Windows 11 tool enables a user to manually add a Bluetooth device if it does not automatically configure when first connected?
Answer: C
Explanation:
When a Bluetooth device does not configure automatically, the underlying issue is often driver discovery, device enumeration, or the Bluetooth adapter's state. In Windows, the tool traditionally associated with manually managing hardware devices and their drivers isDevice Manager. It lets a user view hardware categories (including Bluetooth adapters), enable or disable devices, update drivers, uninstall and rescan, and address "unknown device" situations. These actions are core to manual configuration because they influence whether Windows can properly recognize and communicate with a Bluetooth device.
Windows 11 pairing itself is typically initiated from the Settings app under Bluetooth and devices, where a user chooses "Add device" to pair a new accessory. (Microsoft Support) However, among the options provided, only Device Manager is a hardware-configuration tool that can resolve situations where automatic configuration fails due to driver or adapter problems. Network-related tools do not handle local device drivers, Task Scheduler automates tasks rather than adding devices, and Windows Defender is focused on security and malware protection rather than device setup.
From a systems perspective, this reflects a key operating-systems concept: successful device use requires both discovery/pairing and a correctly installed driver stack. Device Manager is the standard interface for the driver and device side of that equation, which is why it is the best match to "manually add or configure" hardware in the given choices.
NEW QUESTION # 73
What is the correct way to convert an integer to a string in Python?
Answer: D
Explanation:
Python provides built-in type conversion functions that construct a value of a target type from a supplied object when possible. To convert an integer to a string, Python uses the constructor function str(). For example, str(42) produces the string "42". This operation is fundamental in programming textbooks because it enables tasks like formatting output, concatenating numbers into messages, building file names, or preparing numeric values for text-based storage and transmission.
Python distinguishes clearly between numeric types (int, float) and text type (str). You cannot concatenate an integer directly with a string (e.g., "Age: " + 30 raises a TypeError) because the types are different. Using str (30) resolves this by converting the integer into its string representation: "Age: " + str(30) becomes valid.
Modern Python commonly uses f-strings (f"Age: {30}"), which perform conversion automatically, but str() remains the canonical and explicit method.
Options A, B, and C are not standard Python built-ins for conversion. While some libraries define helper functions with similar names, the language's standard approach is str(...). Textbooks also highlight that str() is not limited to integers: it can convert many objects into readable string representations, often by invoking the object's __str__ method. This ties conversion to Python's object model and supports consistent display and logging across programs.
NEW QUESTION # 74
What code would print a subarray of the first 5 elements in numpy_array?
Answer: A
Explanation:
NumPy arrays support slicing using the same start:stop convention as Python sequences. To take the first five elements, you want indices 0 through 4. The slice numpy_array[:5] means "start from the beginning (default start is 0) and stop before index 5." Because the stop index is exclusive, this returns exactly the first five elements. Printing that slice with print(numpy_array[:5]) displays a 1D view (or copy depending on context) containing those elements.
Option A, numpy_array[1:5], starts at index 1, so it returns elements 1 through 4-only four elements-and it excludes the element at index 0, so it is not the first five elements. Options B and D are incorrect because NumPy arrays do not provide a .get() method for slicing in this manner; .get() is a method associated with dictionaries, not arrays.
Textbooks stress slicing because it is efficient and expressive, especially in data analysis. With slicing, you can take prefixes, suffixes, windows, or regularly spaced samples without writing loops. In NumPy, slicing is particularly important because many slices create views into the same underlying data buffer, enabling memory-efficient operations on large datasets. Understanding inclusive start and exclusive stop boundaries is critical to avoid off-by-one mistakes and to work correctly with batches and segments of numerical data.
NEW QUESTION # 75
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