Data Link Layer — Cisco CCNA (200-301) Practice Questions
The data link layer is Layer 2 of the OSI model and is responsible for node-to-node delivery of frames within a single network segment, including error detection and media access control. For the CCNA exam, the most important data link layer technologies are Ethernet and Wi-Fi, along with the framing structures and addressing schemes each uses. Layer 2 devices such as switches use MAC addresses embedded in Ethernet frames to make forwarding decisions within a LAN, and the data link layer defines how devices compete for or share access to the physical medium. Understanding Layer 2 is prerequisite knowledge for topics like VLANs, STP, and EtherChannel, all of which are heavily tested on the 200-301 exam.
Free questions on data link layer
What is the primary function of the Data Link Layer (Layer 2) in the OSI model?
Free question · easy · full answer + explanation
More data link layer questions in the full bank
- Which layer does a switch primarily operate at? Unlock answer & explanation →
- Which protocol operates at Layer 2 of the OSI model? Unlock answer & explanation →
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