In Django, what is the name of the file used to define the URL patterns of an app?
- links.py
- patterns.py
- routes.py
- urls.py
In Django, the file used to define URL patterns for an app is usually named urls.py. This file maps URLs to views, helping Django route incoming requests to the appropriate view functions.
In Django, what is the role of a "view"?
- Defining the database schema
- Handling HTTP requests and returning HTTP responses
- Managing user authentication
- Rendering HTML templates
In Django, a "view" is responsible for handling HTTP requests and returning HTTP responses. Views contain the application logic and decide what data to display and how to display it.
In Flask, how would you access the data sent with a POST request?
- request.args
- request.data
- request.form
- request.get_data()
In Flask, to access the data sent with a POST request, you can use request.data. This attribute contains the raw request data, which can be useful for handling various types of input data, including JSON.
In a ____, each element points to the next one, forming a sequence.
- Array
- Heap
- Linked List
- Stack
In a "Linked List," each element (node) contains data and a reference (or pointer) to the next node, forming a sequence. Linked lists are versatile data structures used in various applications, including dynamic data storage.
In a ____, each node contains a reference to the next node in the sequence.
- Array
- Linked List
- Queue
- Stack
A Linked List is a data structure in which each node contains a reference to the next node. This makes it a suitable choice for dynamic data structures where elements can be easily added or removed at any position.
In a binary tree, a node with no children is called a _____.
- Branch node
- Leaf node
- Root node
- Traversal
In a binary tree, a node with no children is called a "leaf node." Leaf nodes are the endpoints of the tree and have no child nodes. They are essential in various tree operations and algorithms.
In a Flask application, you are required to implement user authentication. How would you securely manage user passwords?
- Hash and salt user passwords before storage
- Store passwords in plain text for easy retrieval
- Transmit passwords in HTTP headers for convenience
- Use symmetric encryption for password storage
Securely managing user passwords in Flask involves hashing and salting them before storage. This ensures that even if the database is compromised, attackers can't easily recover passwords.
In algorithm analysis, ____ denotes the upper bound of the running time of an algorithm.
- Big-O
- O-notation
- Θ-notation
- Ω-notation
In algorithm analysis, Big-O notation (often represented as O-notation) denotes the upper bound of the running time of an algorithm. It provides an upper limit on how the algorithm's runtime scales with input size.
In deep learning models built using TensorFlow or PyTorch, the ____ method is used to update the model parameters based on the computed gradients.
- backward
- fit
- optimize
- predict
In deep learning frameworks like TensorFlow or PyTorch, the optimize method (or optimizer) is used to update the model parameters (weights) based on the computed gradients during training. This step is a crucial part of the training process as it helps the model learn from the data.
How would you use a mock object in Python for testing a function that makes an HTTP request?
- Create a mock object that simulates the behavior of an HTTP request, allowing you to test the function's behavior without making actual network requests.
- Modify the function to skip the HTTP request when testing, replacing it with a placeholder function.
- Use a third-party library like httpretty to intercept and mock HTTP requests within the function.
- Use the built-in unittest.mock library to automatically mock HTTP requests made by the function.
To test a function making HTTP requests, creating a mock object that simulates HTTP behavior is a common practice. This ensures that tests are isolated and don't depend on external services.