MAD2- List Of viva Questions for Practice
Questions Releated to VUE
1. What is vue?
2. What is a reactive framework?
3. What is memoization?
4. What is a rainbow table?
5. What is a v-cloak?
6. How can you access the server without using browser and Url?
7. Difference between v-if and v-show?
8.What are vue lifecycles and which all you used?
9.Explain how 'watch' works in vue and where you used it?
10.What are slots?
11.How to implement template inheritance functionality in Vue?
12.show me for-directive in vue code?
13.Routes in vue?
14.What are parent & child components?
15.Advantages of vue/react over javascript?
Questions Related to Backend Jobs
1. Difference between memoization and caching?
2. What is celery? Components of celery? Celery Beat?
3.Where did you implement caching?
4.Different btw memcached and redis cache?
5. What all celery jobs have you implemented explain?
6.How to shutdown celery task without using terminal?
7.what is memoization?
8.Explain the Crontab statement in the celery schedule?
Questions Related to DataBase
1. What was the default hashing algorithm in mad1?
2. What is sha26? Can it be decrypted back? How many hashing algorithms do you know?
3.If you want to change the database from sqlite to any other, what all changes should be made in the code?
4.How to index in sqlalchemy?
5.What is dataclass?
6.what is on delete cascade ?
7.Questions on SQL concepts JOINS, Subquery, Aggregate functions, Group by, Having?
8.Difference of using local storage and cookies?
9.Explain your models?
Questions on HTML
1. What is ajax?
2. Questions on frontend like what type of styling have you used?
Questions Related to Flask
1.Is flask open source?
2.Is flask use for large applications?
3.What is Api header?
4.How auth token sent to api?
5.What's CORS?(Cross Object Resource Sharing)
Other Questions
1.What is the need of virtual environment?
2. In network tab of inspect after logging in, go to the payload section password was visible, question was how to hide that ?
3. Implement a feature to send an email to user whenever a new show is released(BookMyShow App)?
4. What other things are you doing besides this degree? Why are you doing this degree?
5.what is exception class in python?
6.What are technologies used in the app?
7.What is cron job?
Authentication Related Questions
1.How login/ authentication used in your app?
2.Validation in the form?
3 RoleBasedAccessControl how it's implemented?
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Questions asked by Level3_12-
Q1- Viewed Models.py and asked what is parent
child relationship?
A parent-child relationship in models
typically refers to a one-to-many or many-to-one relationship between two tables in a
database. The parent table holds the primary data, while the child table contains related data and
often includes a foreign key that references the parent table.
Q2- Definitions of ORM, Rest, MVC, DOM:
ORM
(Object-Relational Mapping): A technique that allows you to query and
manipulate data from a database using an
object-oriented paradigm.
REST
(Representational State Transfer): An architectural style for designing
networked applications, relying on
stateless, client-server communication, typically over HTTP.
MVC (Model-View-Controller): A software
architectural pattern that separates an application into three interconnected components: Model
(data), View (UI), and Controller (business logic). DOM (Document Object Model): A programming
interface for web documents. It represents the
page so that programs can change the document structure, style, and
content.
Q3- What is mvc, show which part of your code
comes under model, and which one comes
under controller and view.
MVC
(Model-View-Controller):
Model: The part of
the code that handles data and business logic (e.g., models.py).
View: The UI part of
the code (e.g., HTML templates rendered with Jinja2).
Controller: The part of the code that handles
user input and interacts with the model to update the view (e.g., Flask routes in app.py).
Q4- What are Different types of requests?
The most common types are GET, POST, PUT,
DELETE, PATCH, OPTIONS, and HEAD. These
are HTTP methods used to perform operations in web applications.
Q5- Is it possible to send data thru Get
request?
Yes, data can be sent through a GET request,
typically via URL parameters (query strings).
However, it’s less secure compared to POST because the data is visible
in the URL. Q6- What is Get/post?
GET: Used to request data from a server. The
data is appended to the URL as query
parameters.
POST: Used to send data to the
server, typically for creating or updating resources. The data is sent in the body of the request.
Q7- What is template inheritance and why is
that used? , where template inheritance is used in your code?
Template
Inheritance: Allows you to create a base template (e.g., layout.html) that
other templates can extend. This
promotes code reuse and consistency across web pages. Usage in Code: It is used in Jinja2 templates
to manage common layouts and avoid code
duplication.
Q8- What are JS tags?
JS tags refer to <script> tags in HTML,
used to include JavaScript code in a web page.
Q9- What are Html ids and classes?
ID: A unique identifier for an HTML element,
used to style or manipulate that specific element. Class: A way to define a group of elements
that can share the same style or behavior.
Q10- Differentiate between id and name
attributes in form.
ID: Uniquely
identifies an element in the DOM. Useful for styling and scripting.
Name: Used to
reference form data after the form is submitted. It doesn’t have to be unique.
Q11- What are different types of css and what
is their precedence?
Types:
Inline CSS (applied
directly to an element using the style attribute)
Internal CSS
(defined within a <style> tag in the HTML file) External CSS (linked via a separate .css
file) Precedence: Inline > Internal
> External.
Q12- Order of inline, external, internal.
Correct Precedence: Inline > Internal >
External (based on specificity, inline styles override others).
Q13- How to call and handle JS function using
ids.
Call: Use
document.getElementById('id').method() in your JavaScript code to target
and manipulate the element with a
specific ID.
Q14- http and HTTPS n fullform,
which one is best? Which one is more secure: HTTP or HTTPS?
HTTP (Hypertext
Transfer Protocol)
HTTPS (Hypertext Transfer Protocol Secure):
HTTPS is more secure as it encrypts data,
providing secure communication over the network.
Q15- Client server vs distributed
architecture.
Client-Server: A
centralized architecture where clients request resources, and servers
provide them.
Distributed Architecture: Resources and tasks
are distributed across multiple servers, often in different locations.
Q16- What is Git n its uses, git is
distributed or client server?
Git: A distributed
version control system used for tracking changes in source code during software development.
Distributed: Git allows each developer to have
a complete copy of the repository.
Q17- How does the network security work
between client and server Explain the process.
Network security involves encryption (e.g.,
SSL/TLS), secure protocols (e.g., HTTPS), and
authentication mechanisms to protect data integrity, confidentiality,
and availability during communication
between client and server.
Q18- Show the database.
You would typically connect to the database
via an ORM tool like SQLAlchemy in Flask to
retrieve and display data.
Q19- What is the meaning of public and private
campaigns?
Public Campaigns:
Accessible by anyone, visible to the public.
Private Campaigns: Restricted access, visible
only to authorized users or groups.
Q20- How do we get an element of a particular
ID or class in CSS?
Use #id for IDs and .class for classes in your
CSS to style the respective elements.
Q21- What attribute do we use to start CSS in
inline, internal, or external CSS?
Inline: Use
the style attribute directly on HTML elements.
Internal: Use the <style> tag in the <head> section.
External: Link an external
stylesheet using the <link> tag.
Q22- What symbol is used before ID and class
in CSS? Where we should use id and where we
should prefer use of class?
ID: Use # before an
ID.
Class: Use . before
a class.
Use Cases: IDs should be used for unique
elements; classes should be used when you need to apply the same styles to multiple elements.
Q23- Is Git centralized or distributed?
Distributed: Git allows multiple developers to
work on the same project independently.
Q24- What other functions does Git have apart
from tracking?
Functions: Branching, merging, version
control, collaborative development, and history tracking.
Q25- What are GET and POST, and what are their
differences? Can we use GET to make
changes?
GET: Retrieves data
from the server, and should not be used to make changes.
POST: Sends data to the server, typically to
create or update resources. You should not use
GET to make changes due to security concerns.
Q26- Can we submit data using GET?
Yes, but it is not recommended for sensitive
data as it is visible in the URL.
Q27- What security measures does HTTPS use to
ensure security?
HTTPS uses SSL/TLS encryption, digital
certificates, and secure key exchange mechanisms to protect data.
Q28- What technology is used for templating?
Jinja2 is used for templating in Flask
applications.
Q29- Are class inheritance and template
inheritance the same?
No, class inheritance refers to
object-oriented programming, while template inheritance refers to reusing HTML structure in web development.
Q30- What are sessions and cookies, and where
are they stored?
Sessions:
Server-side storage for user data. A session ID is stored in a cookie on
the client-side.
Cookies: Client-side storage for small pieces
of data, often used for maintaining session state.
Q31- What are the advantages of using template
inheritance?
Advantages: Code reusability, maintainability,
and consistency across multiple web pages.
Q32- What is restful API.
A RESTful API is an application programming
interface that follows REST principles, allowing communication between clients and servers
using HTTP methods.
Q33- What is class and what is object.
Class: A
blueprint for creating objects in object-oriented programming. Object: An instance of a class that contains
data and methods.
Q34- What are the benefits of using bootstrap.
Benefits: Responsive design, pre-built
components, cross-browser compatibility, and ease of use.
Q35- Which templating system is used in your
code?
Jinja2 is used in Flask.
Q36- Define your database and models.
The database is structured to store
application data, with models defined using an ORM like SQLAlchemy to represent database tables and
their relationships.
Q37- How you connect your database to your
code?
In Flask, the database is connected using a
configuration setting that specifies the database URI, and the ORM (e.g., SQLAlchemy) manages
the connection.
Q38- Something about class in javascript.
A class in JavaScript is a blueprint for
creating objects with shared properties and methods, introduced in ES6.
Q39- In many applications we see that if we
login then we can perform tasks and have access
for a long time without getting logged out by itself, what do you think
is behind this functionality? How does
this work?
This functionality is managed by sessions or
tokens. Sessions maintain state on the server-side, while tokens (like JWT) are stored
client-side and used for authentication. The session or token persists across requests, allowing continuous
access until it expires or the user logs out.
*Questions for modifying code*-
Q40- Change the backend such that the username
of user is added in the uppercase only even
if the user provides input in mixed alphabets.
Q41- Change the frontend such that users can
only enter 10 letters as Username.
Q42- Change the color of navba8r.
Q43- He also asked me to perform some basic
operations like creating campaigns, editing and
deleting them.
Q44- Signup as sponsor and send ad_request.
Q45- Restrict the full name to 10 characters.
If the character count exceeds this limit, a warning should be shown on the client side.
Q46- Store the full name in all capital
letters.
