2023 LinkedIn Skill Assessment Answers – Django

2023 LinkedIn Skill Assessment Answers – Django

2023 LinkedIn Skill Assessment Answers – 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 <p> 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 filed 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





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):
class Book(models.model):

  • A

class Author (models.model):
class Book(models.model):

  • B

class Author (models.model):
class Book(models.model):

  • C

class Author (models.model):
class Book(models.model):

  • D

class Author (models.model):
class Book(models.model):

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:
fields=('name','position', 'mass', 'rings')

  • B

from rest_framework import serializers
from .models import Planet
class PlanetSerializer():
class Meta:
fields=('name','position', 'mass', 'rings')

  • C

from django.db import serializers
from .models import Planet
class PlanetSerializer(serializers.ModelSerializer):
fields=('name','position', 'mass', 'rings')

  • D

from django.db import serializers
from .models import Planet
class PlanetSerializer(serializers.ModelSerializer):
class Meta:

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 …

  • 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 specification

  • a Python module

  • a framework

Q56. Which generic view should be used for displaying the tittles 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



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

  • render_to_request()

  • render()

  • redirect()

  • get_object_or_404()


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.


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


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

  • black

  • puffer

  • pitch

  • humanize

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