What is the primary purpose of output caching in ASP.NET?
A. To improve performance by storing the rendered output of web pages and reusing it for subsequent requests.
B. To manage user sessions.
C. To handle authentication and authorization.
D. To optimize database queries.
Answer: A
Which directive is used to enable output caching in an ASP.NET web page?
A. <%@ OutputCache %>
B. <%@ Cache %>
C. <%@ Page %>
D. <%@ CacheSettings %>
Answer: A
What does the Duration parameter specify in the output caching directive?
A. The number of seconds that the cached output should be stored before it is considered stale.
B. The size of the cache in megabytes.
C. The frequency of cache refresh.
D. The number of requests to cache.
Answer: A
How does the VaryByParam attribute affect output caching?
A. It determines how the cache varies based on the query string or form parameters.
B. It specifies the expiration time of the cache.
C. It controls the size of the cache.
D. It defines the location of the cache.
Answer: A
What is the effect of setting the VaryByHeader attribute in output caching?
A. It makes the cache vary based on HTTP headers sent by the client.
B. It controls the expiration time of the cache.
C. It manages cache location.
D. It specifies the duration of cache storage.
Answer: A
Which of the following is a valid value for the VaryByParam attribute?
A. None, All, or a specific parameter name.
B. True or False.
C. Cache, NoCache.
D. Public, Private.
Answer: A
What is the default value of the VaryByParam attribute if not specified?
A. None
B. All
C. Default
D. True
Answer: A
How can you implement output caching for a specific section of a web page rather than the entire page?
A. By using the OutputCache directive within an UpdatePanel control or by applying caching programmatically in code.
B. By using the Cache object.
C. By configuring settings in the web.config file.
D. By using the Session object.
Answer: A
What is the impact of setting the Location attribute in the output caching directive?
A. It determines where the cache is stored, such as on the server or client-side.
B. It controls the duration of the cache.
C. It specifies the type of cache (e.g., memory or disk).
D. It determines the number of cached items.
Answer: A
Which caching mechanism stores data in memory and is suitable for high-performance scenarios?
A. In-memory caching
B. Disk-based caching
C. Database caching
D. Cloud-based caching
Answer: A
How does output caching affect the scalability of an ASP.NET application?
A. It improves scalability by reducing the load on the server and database through cached responses.
B. It requires additional server resources.
C. It complicates application deployment.
D. It eliminates the need for load balancing.
Answer: A
In which scenarios should output caching be avoided?
A. When the content is highly dynamic and changes frequently.
B. When the content is static and rarely changes.
C. For pages with complex data that benefits from caching.
D. For frequently accessed pages that are CPU-intensive.
Answer: A
How can you control the output cache programmatically in ASP.NET?
A. By using the HttpRuntime.Cache object or HttpCachePolicy class.
B. By configuring settings in web.config.
C. By applying caching directives in the page markup.
D. By using the Session object.
Answer: A
Which attribute of the OutputCache directive controls whether the cached content should be stored on the client-side or server-side?
A. Location
B. Duration
C. VaryByParam
D. VaryByHeader
Answer: A
How can output caching improve the performance of web applications with complex data queries?
A. By storing the results of expensive data queries in cache, reducing the need for repeated database access.
B. By simplifying the database schema.
C. By increasing the number of concurrent database connections.
D. By reducing the number of database queries.
Answer: A
What does the VaryByCustom attribute allow you to specify in the OutputCache directive?
A. Custom variations of cached content based on user-defined criteria or custom logic.
B. The default caching location.
C. The size of the cache.
D. The expiration policy of cached items.
Answer: A
How can you use output caching to cache the result of an HTTP request for a specific URL?
A. By configuring caching rules in the web.config file or using the OutputCache directive with URL parameters.
B. By setting caching policies in IIS.
C. By using server-side caching frameworks only.
D. By caching database query results directly.
Answer: A
What is the role of HttpCachePolicy class in managing output caching?
A. It provides methods and properties to control and manipulate caching policies programmatically.
B. It stores cached items in memory.
C. It manages the session state.
D. It handles authentication and authorization.
Answer: A
What effect does the NoStore parameter have in output caching?
A. It prevents the page or data from being cached by the server or client.
B. It increases the duration of cached items.
C. It ensures that the cache is stored on the server.
D. It allows the cache to be shared among multiple users.
Answer: A
How does output caching interact with AJAX requests in ASP.NET?
A. AJAX requests can also be cached, but caching behavior might need to be managed differently based on request headers.
B. AJAX requests bypass the output caching mechanism.
C. AJAX requests automatically use in-memory caching.
D. AJAX requests do not affect the caching of web pages.
Answer: A
Which HTTP caching directive can be used to prevent caching of dynamic content in the browser?
A. Cache-Control: no-cache
B. Expires
C. Pragma: no-cache
D. Cache-Control: max-age
Answer: A
What is the significance of the VaryByCustom attribute in the context of custom caching logic?
A. It allows the cache to vary based on custom logic defined in the VaryByCustom method of the CachePolicy class.
B. It sets the cache expiration time.
C. It determines the size of the cache.
D. It defines the caching location.
Answer: A
Which attribute specifies how the cache varies based on the user’s language or culture?
A. VaryByCustom
B. VaryByParam
C. VaryByHeader
D. Location
Answer: A
How can you clear cached data programmatically in ASP.NET?
A. By using methods provided by the Cache or MemoryCache class to remove specific cached items.
B. By restarting the application pool.
C. By configuring cache expiration settings.
D. By deleting cached files from the disk.
Answer: A
What is the purpose of the OutputCache attribute in ASP.NET MVC?
A. To cache the output of an action method to improve performance and reduce server load.
B. To manage user sessions.
C. To handle routing and URL management.
D. To manage authentication and authorization.
Answer: A
How does output caching impact the delivery of content to users?
A. It reduces the time to deliver content by serving cached responses instead of generating them anew.
B. It increases the time to deliver content due to additional processing.
C. It changes the content delivered to users.
D. It requires users to log in again.
Answer: A
What should be considered when caching user-specific data?
A. Ensure that the cache key is unique to each user to avoid serving incorrect data.
B. Cache all data without differentiation.
C. Use a single cache key for all users.
D. Avoid caching user-specific data.
Answer: A
What is the result of setting the SlidingExpiration property in output caching?
A. The cache entry is refreshed based on the time of last access, extending its lifetime.
B. The cache entry is removed immediately after a request.
C. The cache entry expires at a fixed time interval.
D. The cache entry is not affected by expiration settings.
Answer: A
How does output caching handle requests that are not in the cache?
A. It generates a fresh response and stores it in the cache for future requests.
B. It returns an error to the client.
C. It redirects to a different URL.
D. It ignores the request.
Answer: A
Which attribute allows you to cache data based on the HTTP method (GET, POST)?
A. VaryByHeader
B. VaryByParam
C. VaryByCustom
D. Duration
Answer: A
What does setting CacheLocation to Server in the OutputCache directive imply?
A. The cache is stored on the server side rather than the client side.
B. The cache is stored on the client side.
C. The cache is shared among multiple servers.
D. The cache is stored in the cloud.
Answer: A
What is a common use case for output caching in an ASP.NET application?
A. Caching the results of frequently accessed but rarely changed data to reduce load on the database.
B. Caching user login credentials.
C. Caching real-time data from external APIs.
D. Caching dynamic content that changes frequently.
Answer: A
How does output caching affect the freshness of content?
A. Cached content may become stale and may not reflect the most recent changes unless explicitly refreshed.
B. Cached content is always up-to-date.
C. Output caching ensures content freshness by default.
D. Output caching disables content updates.
Answer: A
What is the role of the VaryByCustom method in custom caching scenarios?
A. It allows defining custom logic to determine how the cache varies based on specific criteria.
B. It sets the default cache expiration.
C. It specifies the size of the cache.
D. It controls the caching location.
Answer: A
Which caching strategy should be used for highly dynamic pages that cannot be cached effectively?
A. Dynamic caching techniques such as cache dependencies or partial caching.
B. Full-page output caching.
C. Disk-based caching.
D. In-memory caching.
Answer: A
What is the effect of using OutputCache in an MVC action method?
A. It caches the HTML output of the action method to improve performance and reduce server processing time.
B. It stores user session data.
C. It manages authentication and authorization for the action method.
D. It changes the action method’s routing behavior.
Answer: A
How can you cache partial content of a page in ASP.NET Web Forms?
A. By using the OutputCache directive on user controls or specific regions of the page.
B. By caching the entire page only.
C. By using server-side session state.
D. By applying caching in the web.config file.
Answer: A
What does the VaryByCustom attribute allow you to do in output caching?
A. Create custom cache variations based on logic implemented in a custom method.
B. Control the duration of cache storage.
C. Define the size of the cache.
D. Specify the caching location.
Answer: A
How can you ensure that output caching does not cause stale content to be served?
A. By setting appropriate expiration policies and using cache dependencies.
B. By avoiding the use of output caching.
C. By frequently clearing the cache manually.
D. By using only in-memory caching.
Answer: A
Which attribute in the OutputCache directive is used to specify the cache duration?
A. Duration
B. VaryByParam
C. Location
D. VaryByHeader
Answer: A
How does output caching impact server load and performance?
A. It reduces server load and improves performance by serving cached responses instead of processing requests repeatedly.
B. It increases server load due to additional caching overhead.
C. It has no impact on server performance.
D. It requires additional hardware resources.
Answer: A
What does the VaryByHeader attribute allow you to specify in the OutputCache directive?
A. It allows the cache to vary based on specific HTTP headers.
B. It sets the cache expiration time.
C. It determines the cache location.
D. It controls the cache size.
Answer: A