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Networking Interview Q&A for Cloud and DevOps
1. What is a subnet?
Answer: A subnet is a logical subdivision of an IP network that allows an organization to manage and segment its network for improved security and traffic efficiency.
2. What is a firewall?
Answer: A firewall is a network security device or software that monitors and filters incoming and outgoing network traffic based on security rules to block unauthorized access.
3. What is NAT (Network Address Translation)?
Answer: NAT translates private IP addresses to a public IP address, allowing multiple devices to access the internet using a single public IP while keeping internal addresses hidden.
4. What is DNS (Domain Name System)?
Answer: DNS is a system that translates domain names (like example.com) into IP addresses so browsers can load the correct resources.
5. What is a VPN (Virtual Private Network)?
Answer: A VPN establishes a secure, encrypted connection over the internet, which protects data from interception and provides privacy, especially on public networks.
