#Core

14 questions

• How do you work with the file system in Node?Node.js#coreJunior›
• How do you create a basic HTTP server in Node?Node.js#coreJunior›
• What are Buffers in Node.js?Node.js#coreJunior›
• Why use the path module instead of string concatenation?Node.js#coreJunior›
• What is a Pod and why is it the smallest deployable unit in Kubernetes?Kubernetes#coreJunior›
• What are the OSI and TCP/IP models?Networking#coreJunior›
• What is the difference between TCP and UDP?Networking#coreJunior›
• How does the TCP handshake, teardown, and flow control work?Networking#coreMiddle›
• How do IP addressing, subnets, CIDR, and NAT work?Networking#coreMiddle›
• What is an operating system and what does it do?Operating Systems#coreJunior›
• What is the difference between a process and a thread?Operating Systems#coreJunior›
• What is a system call, and what are user mode and kernel mode?Operating Systems#coreJunior›
• What are the main IPC mechanisms, and when do you use each?Operating Systems#coreMiddle›
• How do filesystems work: inodes, journaling, and the page cache?Operating Systems#coreSenior›