What is the difference between ASP.NET Web Forms and
ASP.NET MVC?
ASP.NET Web Forms is a framework for building
web applications using a visual drag-and-drop model, while ASP.NET MVC
(Model-View-Controller) is an architectural pattern that separates application logic
into distinct components. MVC provides more control over the HTML output, follows a
more modern development approach, and allows for better testability and
maintainability.
How does ASP.NET handle session state management?
An API key is a unique identifier that
developers include in their API requests to authenticate and authorize their access
to the API. It acts as a security mechanism, allowing the API provider to track and
control access, monitor usage, and enforce rate limits or permissions.
How can you implement caching in ASP.NET to improve
performance?
ASP.NET provides caching mechanisms that allow
developers to store frequently accessed data or rendered HTML output in memory.
Options include output caching, fragment caching, and data caching. Caching can
significantly reduce server load, enhance application performance, and improve
scalability.
What are the different authentication modes available
in ASP.NET?
ASP.NET supports various authentication modes,
such as Forms Authentication, Windows Authentication, and OAuth-based authentication
(e.g., using external providers like Google or Facebook). Each mode has its own
advantages and is suitable for different application scenarios.
Explain the concept of ASP.NET routing.
ASP.NET routing is a mechanism that maps URLs
to specific controller actions or handlers. It allows for more user-friendly and
search engine optimized URLs by using custom URL patterns. Routing enables
developers to define URL patterns and parse incoming requests to determine the
appropriate action or handler to execute.
How would you optimize the performance of an ASP.NET
application?
The candidate should mention techniques like
minimizing database round-trips, optimizing SQL queries, using caching mechanisms,
implementing asynchronous programming, enabling compression and minification of
static assets, leveraging content delivery networks (CDNs), and utilizing
performance profiling tools to identify bottlenecks.
Suppose you encounter a critical bug in an ASP.NET
application that is affecting production. How would you handle it?
The candidate should mention steps like
reproducing the issue in a development environment, analyzing logs and error
messages, utilizing debugging tools and techniques, fixing the bug with proper
testing and validation, coordinating with stakeholders, deploying the fix, and
implementing preventive measures to avoid similar issues in the future.
Describe your approach to handling application
security in ASP.NET.
The candidate should discuss techniques like
input validation, utilizing parameterized queries or ORMs to prevent SQL injection
attacks, implementing secure authentication and authorization mechanisms, handling
cross-site scripting (XSS) and cross-site request forgery (CSRF) vulnerabilities,
enforcing HTTPS for secure communication, and regularly updating and patching
dependencies.
How would you handle data access in an ASP.NET
application?
ORMs for object-relational mapping, writing
efficient SQL queries, implementing stored procedures or views, ensuring proper
validation and sanitization of user input, implementing transaction management, and
considering caching or data replication for performance optimization.
Suppose you need to integrate a third-party API into
an ASP.NET application. What factors would you consider during the integration
process?
The candidate should mention factors like
understanding the API documentation and endpoints provided by the third-party,
assessing the required authentication mechanisms (e.g., API keys, OAuth), handling
data mapping and transformation, considering rate limits and usage quotas,
implementing proper error handling and monitoring for the integration.
Can you describe a complex ASP.NET project you worked
on? What challenges did you face, and how did you overcome them?
The candidate should provide an example of a
complex ASP.NET project they were involved in, describe the specific challenges
faced (e.g., scalability, integration with legacy systems), and explain the actions
they took to overcome those challenges. This question evaluates problem-solving
skills, adaptability, and technical expertise.
Tell us about a time when you had to collaborate with
a team of developers, designers, or stakeholders to deliver an ASP.NET project. How
did you contribute to the team's success?
The candidate should share an experience where
they collaborated with team members, participated in code reviews, communicated
effectively, resolved conflicts, and worked towards common project goals. They
should highlight their teamwork and communication skills.
How do you ensure the maintainability and readability
of your ASP.NET code?
The candidate should discuss their approach to
writing clean and modular code, following coding standards and best practices,
utilizing design patterns and SOLID principles, documenting their code, writing unit
tests, and refactoring code when necessary to improve maintainability and
readability.
Describe a situation where you had to troubleshoot and
resolve a performance issue in an ASP.NET application. How did you handle the
situation, and what was the outcome?
The candidate should describe a scenario where
they identified and resolved a performance issue in an ASP.NET application. They
should explain how they diagnosed the issue, optimized the code or configuration,
utilized profiling or monitoring tools, and measured the impact of the improvements
on the application's performance.
How do you stay up-to-date with the latest trends and
best practices in ASP.NET development?
The candidate should discuss their approach to
continuous learning, such as following ASP.NET-related blogs or newsletters,
attending conferences or webinars, participating in online communities or forums,
and experimenting with personal projects to explore new ASP.NET features or
technologies.
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