Platform Engineer Lead Interview Questions and Answers

Memory leaks can be found and fixed using various tools and techniques.

• Use memory profiling tools like Valgrind, LeakSanitizer, or AddressSanitizer to detect memory leaks.

• Analyze the code to identify the root cause of the memory leak and fix it.

• Ensure that all allocated memory is properly deallocated and avoid unnecessary memory allocations.

• Use smart pointers and garbage collection techniques to manage memory automatically.

• Regularly monitor and test the application to prevent...read more

VMWare provides full virtualization while Docker provides containerization.

• VMWare creates a virtual machine with its own operating system and resources, while Docker shares the host OS and resources.

• VMWare requires more resources and is slower to start up than Docker.

• Docker allows for faster deployment and scaling of applications.

• VMWare is better suited for running multiple operating systems on a single machine, while Docker is better for running multiple instances of the sam...read more

Circular buffer program with producer and consumer scenario, detecting overflow and stopping producer.

• Implement a circular buffer with a fixed size and two pointers for producer and consumer

• Use semaphores to synchronize access to the buffer

• When the buffer is full, stop the producer until the consumer reads from the buffer

• When the buffer is empty, stop the consumer until the producer writes to the buffer

• Use mutex locks to prevent race conditions

• Implement error handling for ove...read more

Kubernetes offers better scalability, flexibility, and community support than Docker Swarm.

• Kubernetes has a larger and more active community, providing better support and resources

• Kubernetes offers more advanced features for scaling and managing containerized applications

• Kubernetes has better flexibility in terms of deployment options and integrations with other tools

• Docker Swarm is simpler to set up and use for smaller deployments

• Kubernetes is better suited for larger, more ...read more

Program to delete a node in a singly linked list

• Find the node to be deleted and its previous node

• Update the previous node's next pointer to skip the node to be deleted

• Free the memory occupied by the node to be deleted

System call is a request made by a program to the operating system for performing a specific task.

• System call provides an interface between the user program and the operating system.

• It allows user programs to request services from the operating system.

• Examples of system calls include read, write, open, close, fork, exec, etc.

• System call is initiated by a software interrupt or trap instruction.

• The operating system performs the requested task and returns the result to the user ...read more

Secure boot flow in Intel and NXP

• Intel uses a firmware-based approach to secure boot, where the firmware verifies the digital signature of the bootloader and OS kernel before loading them

• NXP uses a hardware-based approach to secure boot, where the boot ROM verifies the digital signature of the bootloader and OS kernel before loading them

• Both Intel and NXP use Trusted Platform Module (TPM) to store and verify the digital signature of the bootloader and OS kernel

• Secure boot ens...read more