In Django, the ____ method is used to handle HTTP GET requests specifically in class-based views.
- fetch
- get
- obtain
- retrieve
In Django class-based views, the get method is used to handle HTTP GET requests. This method is called when a user accesses a view via a GET request, allowing you to define how the view should respond to such requests.
In Django, the ____ file is used to store the settings of a project, such as database configurations.
- models
- settings
- templates
- views
In Django, the settings.py file is used to store project-level settings, including database configurations, middleware, and other global settings. It's a central configuration file for a Django project.
In Django, how would you extend the User model to include additional fields?
- a. Subclass the User model and add your fields to the subclass.
- b. Modify the Django source code to include additional fields in the User model.
- c. Create a separate model with a one-to-one relationship to the User model to store additional fields.
- d. It's not possible to extend the User model in Django.
In Django, you can extend the User model by creating a separate model with a one-to-one relationship to the User model to store additional fields. This approach maintains the integrity of the User model. Options a and b are not recommended as they can lead to issues during migrations and upgrades. Option d is incorrect.
In Django, how can you store static files, like CSS or JavaScript, so that they can be served efficiently?
- Embed them directly within your templates
- Place them in a directory named static within your app's directory
- Store them in the database for quick access
- Use a CDN to host the static files
In Django, you can store static files efficiently by placing them in a directory named static within your app's directory. Django's STATICFILES_DIRS setting should be configured to collect these files. This approach allows for efficient serving and easy management of static assets.
In Django, how can you add a column to an existing model’s database table?
- Define a new model and migrate the changes using Django's makemigrations and migrate commands.
- Use the add_column method provided by the Django models module.
- Use the ALTER TABLE SQL command directly on the database.
- You cannot add a column to an existing model in Django.
In Django, you define a new model field within the existing model, then create a migration using makemigrations and apply it using migrate to add a new column to the database table associated with the model. Direct SQL commands should be avoided to maintain consistency and manageability.
In Django, how can you add a column to an existing model’s database table?
- Create a new model and migrate it
- Directly modify the database schema
- Django doesn't support adding columns to existing models
- Use the "makemigrations" command
In Django, you can add a column to an existing model's database table by using the "makemigrations" command to create a migration and then applying it with "migrate." Modifying the database schema directly is not recommended.
In Django Rest Framework, how would you implement token-based authentication?
- Implement token authentication from scratch using custom views and serializers.
- Token-based authentication is not available in Django Rest Framework.
- Use built-in TokenAuthentication by adding it to the DEFAULT_AUTHENTICATION_CLASSES setting. Create tokens for users upon login. Include the token in the header of API requests for authentication.
- Use OAuth2 for token-based authentication.
In Django Rest Framework, you can implement token-based authentication by using the built-in TokenAuthentication class, which involves configuring settings, creating tokens, and including tokens in API requests.
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.
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 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 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 ____, 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.