TCP (Transmission Control Protocol) is connection-oriented and ensures reliable, ordered delivery of data through a "three-way handshake". UDP (User Datagram Protocol) is connectionless and faster but does not guarantee delivery, making it ideal for streaming or gaming. What is Subnetting and why is it used?
A Switch operates at Layer 2 (Data Link) and connects devices within a single local network (LAN) using MAC addresses. A Router operates at Layer 3 (Network) and connects different networks together, such as a LAN to the internet, using IP addresses to determine the best path for data. How do TCP and UDP differ?
Administrators must adopt a "defense-in-depth" approach to secure networks. A Switch operates at Layer 2 (Data Link)
For a portable study guide, you can find various Network Administrator Interview Questions and Answers PDFs available for download on platforms like Naukri, Scribd , and InterviewBit . Core Technical Questions & Answers
Interview Questions and Answers for a Network Administrator - Indeed The layers are: Physical (Layer 1)
Preparing for a network administrator interview requires a blend of deep technical knowledge, practical troubleshooting experience, and the ability to explain complex systems to non-technical stakeholders. To help you succeed, this guide outlines the most common questions across different expertise levels.
These questions test your fundamental understanding of how data moves across a network. Data Link (Layer 2)
The OSI (Open Systems Interconnection) model is a seven-layer framework used to standardize network communications. The layers are: Physical (Layer 1), Data Link (Layer 2), Network (Layer 3), Transport (Layer 4), Session (Layer 5), Presentation (Layer 6), and Application (Layer 7). What is the difference between a Switch and a Router?