Skip to content

Latest commit

 

History

History
901 lines (653 loc) · 28.6 KB

django-quiz.md

File metadata and controls

901 lines (653 loc) · 28.6 KB
Raw

Django

Q1. To cache your entire site for an application in Django, you add all except which of these settings?

  • django.middleware.common.CommonMiddleware
  • django.middleware.cache.UpdateCacheMiddleware
  • django.middleware.cache.FetchFromCacheMiddleware
  • django.middleware.cache.AcceleratedCacheMiddleware

Reference: Django comes with a robust cache system that lets you save dynamic pages, so they don’t have to be computed for each request. For convenience, Django offers cache with different granularity — from entire website to pages to part of pages to DB query results to any objects in memory. Cache middleware. If enabled, each Django-powered page will be cached based on URL.

Q2. In which programming language is Django written?

  • C++
  • Java
  • Python
  • Ruby

Q3. To automatically provide a value for a field, or to do validation that requires access to more than a single field, you should override the ___ method in the ___ class.

  • validate(); Model
  • group(); Model
  • validate(); Form
  • clean(); Field

Q4. A client wants their site to be able to load "Rick & Morty" episodes by number or by title—e.g., shows/3/3 or shows/picklerick. Which URL pattern do you recommend?

  • A
url(r'shows/<int:season>/<int:episode>/', views.episode_number),
url(r'shows/<slug:episode_name>/', views.episode_name)
  • B
path('shows/<int:season>/<int:episode>/', views.episode_number),
path('shows/<slug:episode_name>/', views.episode_name)
  • C
path('shows/<int:season>/<int:episode>', views.episode_number),
path('shows/<slug:episode_name>/', views.episode_number)
  • D
url(r'^show/(?P<season>[0-9]+)/(?P<episode>[0-9]+)/$', views.episode_number),
url(r'^show/(?P<episode_name>[\w-]+)/', views.episode_name

Q5. How do you determine at startup time if a piece of middleware should be used?

  • Raise MiddlewareNotUsed in the init function of your middleware.
  • Implement the not_used method in your middleware class.
  • List the middleware beneath an entry of django.middleware.IgnoredMiddleware.
  • Write code to remove the middleware from the settings in [app]/init.py.

Q6. How do you turn off Django’s automatic HTML escaping for part of a web page?

  • Place that section between paragraph tags containing the autoescape=off switch.
  • Wrap that section between { percentage mark autoescape off percentage mark} and {percentage mark endautoescape percentage mark} tags.
  • Wrap that section between {percentage mark autoescapeoff percentage mark} and {percentage mark endautoescapeoff percentage mark} tags.
  • You don't need to do anything—autoescaping is off by default.

Q7. Which step would NOT help you troubleshoot the error "django-admin: command not found"?

  • Check that the bin folder inside your Django directory is on your system path.
  • Make sure you have activated the virtual environment you have set up containing Django.
  • Check that you have installed Django.
  • Make sure that you have created a Django project.

Q8. Every time a user is saved, their quiz_score needs to be recalculated. Where might be an ideal place to add this logic?

  • template
  • model
  • database
  • view

Q9. What is the correct way to begin a class called "Rainbow" in Python?

  • Rainbow {}
  • export Rainbow:
  • class Rainbow:
  • def Rainbow:

Q10. You have inherited a Django project and need to get it running locally. It comes with a requirements.txt file containing all its dependencies. Which command should you use?

  • django-admin startproject requirements.txt
  • python install -r requirements.txt
  • pip install -r requirements.txt
  • pip install Django

Q11. Which best practice is NOT relevant to migrations?

  • To make sure that your migrations are up to date, you should run updatemigrations before running your tests.
  • You should back up your production database before running a migration.
  • Your migration code should be under source control.
  • If a project has a lot of data, you should test against a staging copy before running the migration on production.

Q12. What will this URL pattern match? url(r'^$', views.hello)

  • a string beginning with the letter Ra string beginning with the letter R
  • an empty string at the server root
  • a string containing ^ and $a string containing ^ and $
  • an empty string anywhere in the URLan empty string anywhere in the URL

Q13. What is the typical order of an HTTP request/response cycle in Django?

  • URL > view > template
  • form > model > view
  • template > view > model
  • URL > template > view > model

Q14. Django's class-based generic views provide which classes that implement common web development tasks?

  • concrete
  • thread-safe
  • abstract
  • dynamic

Q15. Which skills do you need to maintain a set of Django templates?

  • template syntax
  • HTML and template syntax
  • Python, HTML, and template syntax
  • Python and template syntax

Q16. How would you define the relationship between a star and a constellation in a Django model?

  • A
class Star(models.Model):
name = models.CharField(max_length=100)
class Constellation(models.Model):
stars = models.ManyToManyField(Star)
  • B
class Star(models.Model):
constellation = models.ForeignKey(Constellation, on_delete=models.CASCADE)
class Constellation(models.Model):
stars = models.ForeignKey(Star, on_delete=models.CASCADE)
  • C
class Star(models.Model):
name = models.CharField(max_length=100)
class Constellation(models.Model):
stars = models.OneToManyField(Star)
  • D
class Star(models.Model):
constellation = models.ManyToManyField(Constellation)
class Constellation(models.Model):
name = models.CharField(max_length=100)

Q17. Which is NOT a valid step in configuring your Django 2.x instance to serve up static files such as images or CSS?

  • In your urls file, add a pattern that includes the name of your static directory.
  • Create a directory named static inside your app directory.
  • Create a directory named after the app under the static directory, and place static files inside.
  • Use the template tag {percentage mark load static percentage mark}.

Q18. What is the correct way to make a variable available to all of your templates?

  • Set a session variable.
  • Use a global variable.
  • Add a dictionary to the template context.
  • Use RequestContext.

Q19. Should you create a custom user model for new projects?

  • No. Using a custom user model could break the admin interface and some third-party apps.
  • Yes. It is easier to make changes once it goes into production.
  • No. Django's built-in models.User class has been tried and tested—no point in reinventing the wheel.
  • Yes, as there is no other option.

Q20. You want to create a page that allows editing of two classes connected by a foreign key (e.g., a question and answer that reside in separate tables). What Django feature can you use?

  • actions
  • admin
  • mezcal
  • inlines

Q21. Why are QuerySets considered "lazy"?

  • The results of a QuerySet are not ordered.
  • QuerySets do not create any database activity until they are evaluated.
  • QuerySets do not load objects into memory until they are needed.
  • Using QuerySets, you cannot execute more complex queries.

Q22. You receive a MultiValueDictKeyError when trying to access a request parameter with the following code: request.GET['search_term']. Which solution will NOT help you in this scenario?

  • Switch to using POST instead of GET as the request method.
  • Make sure the input field in your form is also named "search_term".
  • Use MultiValueDict's GET method instead of hitting the dictionary directly like this: request.GET.get('search_term', '').
  • Check if the search_term parameter is present in the request before attempting to access it.

Q23. Which function of Django's Form class will render a form's fields as a series of

tags?

  • show_fields()
  • as_p()
  • as_table()
  • fields()

Q24. You have found a bug in Django and you want to submit a patch. Which is the correct procedure?

  • Fork the Django repository GitHub.
  • Submit a pull request.
  • all of these answers.
  • Run Django's test suite.

Q25. Django supplies sensible default values for settings. In which Python module can you find these settings?

  • django.utils.default_settings.py
  • django.utils.global_settings.py
  • django.conf.default_settings.py
  • django.conf.global_settings.py

Q26. Which variable name is best according to PEP 8 guidelines?

  • numFingers
  • number-of-Fingers
  • number_of_fingers
  • finger_num

Q27. A project has accumulated 500 migrations. Which course of action would you pursue?

  • Manually merge your migration files to reduce the number
  • Don't worry about the number
  • Try to minimize the number of migrations
  • Use squashmigrations to reduce the number

Q28. What does an F() object allow you when dealing with models?

  • perform db operations without fetching a model object
  • define db transaction isolation levels
  • use aggregate functions more easily
  • build reusable QuerySets

Q29. Which is not a Django field type for holding integers?

  • SmallIntegerField
  • NegativeIntegerField
  • BigAutoField
  • PositiveIntegerField

Q30. Which will show the currently installed version?

  • print (django.version)
  • import django django.getVersion()
  • import django django.get_version()
  • python -c django --version

Q31. You should use the http method ___ to read data and ___ to update or create data

  • READ; WRITE
  • GET; POST
  • POST; GET
  • GET; PATCH

Q32. When should you employ the POST method over GET for submitting data?

  • when efficiency is important
  • when you want the data to be cached
  • when you want to use your browser to help with debugging
  • when the data in the form may be sensitive

Q33. When to use the Django sites framework?

  • if your single installation powers more than one site
  • if you need to serve static as well as dynamic content
  • if you want your app have a fully qualified domain name
  • if you are expecting more than 10.000 users

Q34. Which infrastructure do you need:

title=models.charfield(max_length=100, validators=[validate_spelling])

  • inizialized array called validators
  • a validators file containing a function called validate_spelling imported at the top of model
  • a validators file containing a function called validate imported at the top of model
  • spelling package imported at the top of model

Q35. What decorator is used to require that a view accepts only the get and head methods?

  • require_safe()
  • require_put()
  • require_post()
  • require_get()

Q36. How would you define the relation between a book and an author - book has only one author.

class Author (models.model):
book=models.foreignkey(Book,on_delete=models.cascade)
class Book(models.model):
name=models.charfield(max_length=100)
  • A
class Author (models.model):
name=models.charfield(max_length=100)
class Book(models.model):
author=models.foreignkey(Author,on_delete=models.cascade)
  • B
class Author (models.model):
name=models.charfield(max_length=100)
class Book(models.model):
author=models.foreignkey(Author)
  • C
class Author (models.model):
name=models.charfield(max_length=100)
class Book(models.model):
author=models.foreignkey(Author,on_delete=models.cascade)
  • D
class Author (models.model):
name=models.charfield(max_length=100)
class Book(models.model):
author=Author.name

Q37. What is a callable that takes a value and raises an error if the value fails?

  • validator
  • deodorizer
  • mediator
  • regular expression

Q38. To secure an API endpoint, making it accessible to registered users only, you can replace the rest_framework.permissions.allowAny value in the default_permissions section of your settings.py to

  • rest_framework.permissions.IsAdminUser
  • rest_framework.permissions.IsAuthenticated
  • rest_framework.permissions.IsAuthorized
  • rest_framework.permissions.IsRegistered

Q39. Which command would you use to apply a migration?

  • makemigration
  • update_db
  • applymigration
  • migrate

Q40. Which type of class allows QuerySets and model instances to be converted to native Python data types for use in APIs?

  • objectwriters
  • serializers
  • picklers
  • viewsets

Q41. How should the code end?

{ percentage if spark >= 50 percentage }
Lots of spark
{percentage elif spark == 42 percentage}
  • { percentage else percentage}
  • {percentage endif percentage}
  • Nothing needed
  • {percentage end percentage}

Q42. Which code block will create a serializer?

from rest_framework import serializers
from .models import Planet
  • A
class PlanetSerializer(serializers.ModelSerializer):
class Meta:
model=Planet
fields=('name','position', 'mass', 'rings')
  • B
from rest_framework import serializers
from .models import Planet
class PlanetSerializer():
class Meta:
fields=('name','position', 'mass', 'rings')
model=Planet
  • C
from django.db import serializers
from .models import Planet
class PlanetSerializer(serializers.ModelSerializer):
fields=('name','position', 'mass', 'rings')
model=Sandwich
  • D
from django.db import serializers
from .models import Planet
class PlanetSerializer(serializers.ModelSerializer):
class Meta:
fields=('name')
model=Planet

Q43. Which class allows you to automatically create a Serializer class with fields and validators that correspond to your model's fields?

  • ModelSerializer
  • Model
  • DataSerializer
  • ModelToSerializer

Q44. Which command to access the built-in admin tool for the first time?

  • django-admin setup
  • django-admin runserver
  • python manage.py createuser
  • python manage.py createsuperuser

Q45. Virtual environments are for managing dependencies. Which granularity works best?

  • you should set up a new virtualenv for each Django project
  • They should not be used
  • Use the same venv for all your Django work
  • Use a new venv for each Django app

Q46. What executes various Django commands such as running a webserver or creating an app?

  • migrate.py
  • wsgi.py
  • manage.py
  • runserver

Q47. What do Django best practice suggest should be "fat"?

  • models
  • controllers
  • programmers
  • clients

Q48. Which is not part of Django's design philosophy?

  • Loose Coupling
  • Less Code
  • Fast Development
  • Implicit over explicit

Q49. What is the result of this template code?

{{"live long and prosper"|truncatewords:3}}

  • live long and ...
  • live long and
  • a compilation error
  • liv

Q50. When does this code load data into memory?

1 sandwiches = Sandwich.objects.filter(is_vegan=True)
2 for sandwich in sandwiches:
3   print(sandwich.name + " - " + sandwich.spice_level)
  • line 1
  • It depends on how many results return by query.
  • It depends on cache.
  • line 2

Q51. You are building a web application using a React front end and a Django back end. For what will you need to provision?**

  • an NGINX web server
  • a NoSQL database
  • a larger hard drive
  • CORS middleware

Q52. To expose an existing model via an API endpoint, what do you need to implement?**

  • an HTTP request
  • a JSON object
  • a query
  • a serializer

Q53. How would you stop Django from performing database table creation or deletion operations via migrations for a particular model?

  • Run the migrate command with --exclude=[model_name].
  • Move the model definition from models.py into its own file.
  • Set managed=False inside the model.
  • Don't run the migrate command.

Q54. what method can you use to check if form data has changed when using a form instance?

  • has_changed()
  • its_changed()
  • has_updated()
  • None of This

Q55. What is WSGI?

  • a server
  • an interface specifications
  • a Python module
  • a framework

Reference link:- https://wsgi.tutorial.codepoint.net/intro

Q56. Which generic view should be used for displaying the titles of all Django Reinhardt's songs?

  • DetailView
  • TittleView
  • SongView
  • ListView

Q57. Which statement is most accurate, regarding using the default SQLite database on your local/development machine but Postgres in production

  • There's less chance of introducing bugs since SQLite already works out the box
  • It's fine, you just need to keep both instances synchronized
  • It's a bad idea and could lead to issues down the road
  • It's the most efficient way to build a project

Q58. Why might you want to write a custom model Manager?

  • to perform database queries
  • to set up a database for testing
  • to modify the initial QuerySet that the Manager returns
  • to filter the results that a database query returns

Q59. In Django, what are used to customize the data that is sent to the templates?

  • models
  • views
  • forms
  • serializers

Q60. To complete the conditional, what should this block of code end with?

% if sparles >= 50 %
  Lots of sparkles!
% elif sparkles == 42 %
  The answer to life, the universe, and everything!
  • % endif %
  • Nothing else is needed.
  • % end%
  • % else %

Q61. When should you employ the POST method over the GET method for submitting data from a form?

  • when the data in the form may be sensitive
  • when you want the data to be cached
  • when you want to use your browser to help with debugging
  • when efficiency is important

Q62. What is a callable that takes a value and raises an error if the value fails to meet some criteria?

  • mediator
  • validator
  • regular expression
  • deodorizer

Q63. You are uploading a file to Django from a form and you want to save the received file as a field on a model object. You can simply assign the file object from**_to a field of type__**in the model.

  • request.META; FileField
  • request.FILES; BLOBField
  • request.FILES; FileField
  • request.META.Files; CLOBField

Q64. What python module might be used to store the current state of a Django model in a file?

  • pickle
  • struct
  • marshal
  • serialize

Q65. To add a new app to an existing Django project, you must edit the _ section of the _ file.

  • ALLOWED_HOSTS; settings.py
  • APPS; manage.py
  • INSTALLED_APPS; settings.py
  • TEMPLATES; urls.py

Q66. Which is not a third-party package commonly used for authentication?

  • django-guardian
  • django-rest-auth
  • authtoken
  • django-rest-framework-jwt

Q67. Which function in the django.urls package can help you avoid hardcoding URLS by generating a URL given the name of a view?

  • get_script_prefix()
  • redirect()
  • reverse()
  • resolve()

Q68. Which is Fictional HTTP request method?

  • POST
  • PUT
  • PAUSE
  • PATCH

Q69. Which helper function is not provided as a part of django.shortcuts package? ref-

  • render_to_request()
  • render()
  • redirect()
  • get_object_or_404()

Reference

Q70. Which is a nonstandard place to store templates?

  • at the root level of a project
  • inside the application
  • in the database
  • on Github

Q71. If you left the 8080 off the command python manage.py runserver 8080 what port would Django use as default?

  • 8080
  • 80
  • 8000
  • It would fail to start

Q72. Which statement about Django apps is false?

  • A Django app is the top-level container for a web application powered by Django.
  • Django apps are small libraries designed to represent a single aspect of a project.
  • Each Django app should do one thing, and one thing alone.
  • A Django project is made up of many apps.

Q73. Which characters are illegal in template variable names?

  • underscores.
  • uppercase letters.
  • punctuation marks .
  • numbers.

Reference

Q74. Which is not a valid closing template tag?

  • % endautoescape %
  • % endifempty %
  • % endcomment %
  • % endfilter %

Q75. When would you need to use the reverse_lazy utility function instead of reverse?

  • when you want to provide a reverse URL as a default value for a parameter in a function's signature
  • all of the these answers
  • when you want to provide a reverse URL as the url attribute of a class-based generic view
  • when you want to provide a URL to a decorator, such as the login_url argument for the permission_required() decorator

Q76. What is the purpose of the __init__.py file?

  • to extend the set of modules found in a package
  • to allow compiled modules from different releases and different versions of Python to coexist
  • to initialize project settings
  • to declare the directory contents as a Python module

Reference

Q77. What python package can be used to edit numbers into more readable form like "1200000" to "1.2 million"?

  • black
  • puffer
  • pitch
  • humanize

Q78. Where would you find the settings.py file?

  • [projectname]/settings.py
  • [projectname]/[projectname]/settings.py
  • [PYTHON_ROOT]/settings.py
  • [DJANGO_ROOT]/settings.py

Q79. What would you write to define the relationship between a book and an author--assuming a book has only one author-in a Django model?

  • A
class Author (models.Model):
  name = models. CharField (max_length=100)
class Book(models .Model):
  author = models. ForeignKey (Author, on_delete=models. CASCADE)
  • B
class Author (models.Model):
  name = models. CharField(max length=100)
class Book(models .Model):
  author = models. ForeignKey (Author)
  • C
class Author (models .Model):
  name = models.CharField (max_length=100)
class Book (models .Author) :
  author = Author. name
  • D
class Author (models. Model):
  book = models. ForeignKey (Book, on_delete=models.CASCADE)
class Book(models.Model):
  name = models. CharField (max length=100)

Q80. What method can you use to check if form data has been changed when using a Form instance?

  • changed_data()
  • has changed()
  • has_updated()
  • is_modified()

Q81. Which statement is most accurate, regarding using the default SQLite database on your local/development machine but Postgres in production?

  • It's the most efficient way to build a project
  • There's less chance of introducing bugs since SQLite already works out of the box
  • It's a bad idea and could lead to issues down the road
  • It's fine, you just need to keep both instances synchronized

Q82. How does Django handle URL routing?

  • by using classes
  • by using functiones
  • by using regular expressions
  • by using fixed path

Q83. What is the purpose of Django's middleware?

  • To define the database schema
  • To manage URL routing
  • To handle HTTP requests and responses globally
  • To create user interfaces

Reference

Q84. Which of the following is true about Django's Object-Relational Mapping (ORM)?

  • It's used to define URL routing in a Django application.
  • It allows you to query the database using Python code.
  • It's used to define the structure of HTML templates.
  • It's responsible for managing user authentication.

Q85. Which of the following is true about Django's "many-to-many" field in a model?

  • It's used to define a one-to-one relationship between two models.
  • It creates a foreign key relationship between two models.
  • It allows multiple objects to be associated with each other.
  • It enforces unique constraints on a field.

Q86. Django's class-based generic views provide which classes that implement common web development tasks?

  • concrete
  • thread-safe
  • abstract
  • dynamic

Q87. Which skills do you need to maintain a set of Django templates?

  • template syntax
  • HTML and template syntax
  • Python, HTML, and template syntax
  • Python and template syntax

Q88. Which is a nonstandard place to store templates?

  • at the root level of a project
  • inside the application
  • in the database
  • on Github

Q89. If you left the 8080 off the command python manage.py runserver 8080 what port would Django use as default?

  • 8080
  • 80
  • 8000
  • It would fail to start

Q90. What is the purpose of Django's Object-Relational Mapping (ORM)?

  • To define URL routing in a Django application.
  • To handle HTTP requests and responses globally.
  • To map Python objects to database tables and simplify database operations.
  • To create user interfaces.

Q91. In Django, what does the term "migration" refer to?

  • A change in URL routing configuration.
  • The process of propagating changes you make to your models (adding a field, deleting a model, etc.) into your database schema.
  • A way to define custom middleware.
  • The process of creating HTML templates for your application.

Q92. What is the purpose of Django's "context" in the context of rendering templates?

  • To pass data from your views to your templates so that the data can be rendered dynamically.
  • To define URL patterns for your application.
  • To manage HTTP requests and responses.
  • To create user interfaces.

Q93. What does the Django QuerySet class represent?

  • A Python class used for defining URL routing in Django.
  • A class for managing HTTP requests and responses.
  • A database query made by Django, represented in Python.
  • A class for defining HTML templates.

Q94. In Django, what is the purpose of the "collectstatic" management command?

  • To collect user data for analytics.
  • To collect database records from multiple sources.
  • To collect all static files (CSS, JavaScript, images) from each of your applications into a single location.
  • To collect logs for debugging purposes.

Q95. What is the Django Admin site used for?

  • To manage user authentication.
  • To define URL routing for Django applications.
  • To provide an automatically generated admin interface for your models.
  • To write and run database queries.

Q96. What does Django's "middleware" refer to?

  • A way to create user interfaces.
  • A database query in Django.
  • A way to process HTTP requests and responses globally before they reach the view or after they leave the view.
  • A way to configure URL routing in Django.

Q97. What is the primary purpose of Django's "migration files"?

  • To define and store changes to the database schema over time.
  • To manage static files like CSS and JavaScript.
  • To configure URL patterns.
  • To create HTML templates.

Q98. Which authentication system does Django provide out of the box?

  • OAuth 2.0
  • User authentication with built-in user models and views.
  • JWT (JSON Web Tokens)
  • SAML (Security Assertion Markup Language)

Q99. In Django, what does the "Model-View-Controller" (MVC) architectural pattern refer to?

  • A pattern for defining URL routing.
  • A pattern for creating HTML templates.
  • A pattern that divides the application into three interconnected components: Model, View, and Controller (Django often refers to it as MTV, Model-View-Template).
  • A pattern for user authentication.

Q100. What is the purpose of Django's "templates"?

  • To define database schema and model relationships.
  • To define the structure and layout of HTML pages to be served to the user.
  • To configure URL patterns for your application.
  • To store and serve static files like images and JavaScript.