Layer 2 — Cisco CCNA (200-301) Practice Questions
Layer 2 refers to the data link layer of the OSI model, where switches and bridges operate by reading MAC addresses to forward or filter Ethernet frames within the same broadcast domain. The CCNA 200-301 exam dedicates significant coverage to Layer 2 concepts including switching operations, VLAN configuration, trunking with 802.1Q, and Spanning Tree Protocol. You must understand how a switch builds and maintains its MAC address table, how frames are flooded when a destination is unknown, and how VLANs segment Layer 2 broadcast domains. Layer 2 troubleshooting, including identifying loops, misconfigured trunks, and incorrect VLAN assignments, is a consistent focus of exam scenarios.
Free questions on layer 2
What is the primary function of the Data Link Layer (Layer 2) in the OSI model?
Free question · easy · full answer + explanation
More layer 2 questions in the full bank
- What is the function of ARP (Address Resolution Protocol)? Unlock answer & explanation →
- What is the default priority value for a Spanning Tree port? Unlock answer & explanation →
- Which layer does a switch primarily operate at? Unlock answer & explanation →