Platform Engineer Lead

Platform Engineer Lead Interview Questions and Answers

Updated 15 Oct 2022

Q1. Memory leaks how do you find them and fix them?

Ans.

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

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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

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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

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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

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Ans.

Expression to clear nth bit in a number

Ans.

Program to delete a node in a singly linked list

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Ans.

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

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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