Layer 2 — CompTIA Network+ (N10-009) Practice Questions
Layer 2, the Data Link layer of the OSI model, is responsible for node-to-node delivery of frames within the same network segment, using MAC addresses to identify source and destination devices. The Network+ exam places significant emphasis on Layer 2 technologies including Ethernet framing, switching operations, MAC address tables, VLANs, Spanning Tree Protocol (STP), and trunk links. Candidates must understand how switches learn MAC addresses, forward or flood frames, and prevent broadcast storms through STP, as well as how Layer 2 security threats such as MAC flooding and VLAN hopping are carried out and mitigated. Layer 2 concepts are foundational to both the infrastructure and security domains of the N10-009 exam.
Free questions on layer 2
What is the purpose of a VLAN?
Free question · easy · full answer + explanation
More layer 2 questions in the full bank
- What is the purpose of spanning tree protocol? Unlock answer & explanation →
- What is RSTP (Rapid Spanning Tree Protocol)? Unlock answer & explanation →
- What is a MAC address used for? Unlock answer & explanation →