Osi Model — CompTIA Network+ (N10-009) Practice Questions
The OSI model is a seven-layer conceptual framework that standardizes how network communication functions are divided and implemented, from physical signaling at Layer 1 through application-level protocols at Layer 7. The Network+ exam uses the OSI model extensively as a reference for troubleshooting, protocol classification, and understanding how devices such as switches, routers, and firewalls operate at specific layers. Mastery of the OSI model is fundamental to answering both conceptual and scenario-based questions across the entire exam.
Free questions on osi model
Which security protocol encrypts network traffic at Layer 3?
Free question · medium · full answer + explanation
Which OSI layer is responsible for routing and logical addressing?
Free question · easy · full answer + explanation
Which OSI model layer is responsible for establishing, maintaining, and terminating connections?
Free question · easy · full answer + explanation
Which device operates at both Layer 2 and Layer 3?
Free question · easy · full answer + explanation
More osi model questions in the full bank
- A company needs to transmit sensitive data across the internet securely. Which protocol should be used at the Application layer? Unlock answer & explanation →
- In TCP/IP, which layer is responsible for establishing end-to-end connections and managing data flow? Unlock answer & explanation →
- Which OSI layer is responsible for establishing, maintaining, and terminating communication sessions between applications? Unlock answer & explanation →