Publicis Sapient Senior Associate Technology L1 Interview Questions, Process, and Tips

Memory management is the process of managing computer memory to allocate and deallocate memory resources.

• Memory management involves allocating memory to processes that need it and deallocating memory that is no longer needed.

• It also involves managing memory fragmentation and ensuring efficient use of memory.

• Examples of memory management techniques include paging, segmentation, and virtual memory.

• Memory leaks can occur ...read more

Memory management in .NET

• Garbage Collector manages memory by freeing up unused objects

• Memory is allocated on the heap and managed by the CLR

• Finalizers are used to release unmanaged resources

• Memory leaks can occur if objects are not properly disposed

• Value types are stored on the stack and are automatically managed

Garbage collector identifies objects to pick based on their reachability.

• Garbage collector starts from a set of root objects and identifies all objects that are reachable from them.

• Objects that are not reachable are considered garbage and are eligible for collection.

• Reachability is determined by following object references from root objects.

• Objects that are referenced by other reachable objects are also considered reac...read more

Prevent memory leaks by properly managing memory allocation and deallocation.

• Use smart pointers instead of raw pointers.

• Avoid circular references.

• Free memory when it is no longer needed.

• Use tools like valgrind to detect memory leaks.

• Avoid global variables.

• Use RAII (Resource Acquisition Is Initialization) technique.

• Avoid using malloc and free directly.

• Use a garbage collector if appropriate.

A dictionary stores data in key-value pairs.

• Each key is unique and maps to a specific value.

• Keys are used to retrieve values from the dictionary.

• Data can be added, removed, or updated in the dictionary.

• Examples include Python's dict and Java's HashMap.

SQL indexes are stored in the database's file system.

• Indexes are stored in the same filegroup as the table or in a separate filegroup.

• They can be stored in the same physical file as the table or in a separate file.

• Indexes can also be stored in memory, such as in the buffer pool.

• The location of the index storage can affect performance.

• Examples of index storage options include clustered, nonclustered, and full-text index

Bundling in MVC is needed to improve performance by reducing the number of HTTP requests.

• Bundling combines multiple files into a single file to reduce the number of HTTP requests.

• This improves performance by reducing the time it takes to load a page.

• Bundling also allows for minification, which reduces the size of the files being sent to the client.

• Examples of files that can be bundled include CSS, JavaScript, and image