Layer 3 — Cisco CCNA (200-301) Practice Questions
Layer 3 of the OSI model, the Network layer, is responsible for logical addressing and routing packets between different networks using IP addresses. Routers operate at layer 3 and use routing tables populated by static configuration or dynamic routing protocols to forward traffic toward its destination. The CCNA exam places heavy emphasis on layer 3 concepts including IPv4 and IPv6 addressing, subnetting, routing protocol behavior, and inter-VLAN routing. Understanding what happens at layer 3 is essential for designing, configuring, and troubleshooting any routed network.
Free questions on layer 3
Which of the following address types is used at Layer 3 of the OSI model?
Free question · easy · full answer + explanation
More layer 3 questions in the full bank
- What is the primary purpose of a router in network infrastructure? Unlock answer & explanation →
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