Top QA Interview Questions with Answers

SDLC (Software Development Life Cycle) — the life cycle of software.

Key stages: Planning, Analysis, Design, Implementation, Testing, Support.

Authentication — it is the process of confirming the identity of the user.
It answers the question: "Is the user who they claim to be?"

Authorization — it is the process of granting or denying access based on the user's rights and privileges.
It answers the question: "What is the user allowed to do?"

Equivalence Partitioning, Boundary Value Analysis, Pairwise Testing, Decision Table.

Here, it is appropriate to mention the Testing Pyramid.

Severity: Evaluates the technical impact of a bug on the system's functionality.

Priority: Evaluates the urgency and importance of fixing the bug from a business perspective.

A typo in the company name on the homepage.

Must know: GET, POST, PUT, DELETE, PATCH.
Optional: HEAD, OPTIONS, CONNECT, TRACE.

Details about each HTTP method.

Yes. There is no protocol-level restriction, and it depends solely on how the developer implements the endpoint.

Idempotent methods are those where calling them repeatedly with the same data set will yield the same result, with no side effects on the server.

Non-idempotent methods affect the server’s state, such as changing data in a database.

HTTP (HyperText Transfer Protocol): Data is transmitted in plaintext, without encryption. Anyone who intercepts the traffic between the browser and the server can potentially read the transmitted information.

HTTPS (HyperText Transfer Protocol Secure): Data is encrypted using SSL/TLS (Secure Sockets Layer / Transport Layer Security). Requires an SSL/TLS certificate to verify the authenticity of the resource.

{
    "name": "Котофей",
    "age": 5
}

In the XSD schema (XML Schema Definition) — a file with the .xsd format. The XSD schema defines the elements and attributes that can be used in an XML document, data types, and restrictions.

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="cat">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="name" type="xs:string"/>
        <xs:element name="age" type="xs:int"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
</xs:schema>

1. Open DevTools
2. Go to the Application tab Application
3. In the left panel, select Cookies
4. Click on the site’s URL
5. A table will appear with the names, values, and other attributes of the cookies

1. Open DevTools
2. Go to the tab Network
3. Send a request from the front end
4. Select the desired request from the list
5. Go to the tab Payload

1. Open DevTools
2. Go to the tab Network
3. Send a request from the front end
4. Select the desired request from the list
5. Go to the tab Response

Monolithic — all components of the system are combined into a single application.

Microservices — a set of independent applications, each performing a specific function, together making up the system.