Important CCNA Interview Questions And Answers

This section will cover all the CCNA interview questions and answers you need to know.
A good CCNA interviewee should be able to answer these questions with ease:
1. What is a router and what does it do?
2. What are the four layers of the OSI model?
3. What is a default gateway?
4. Name two common types of WANs?
5. What are STP, EIGRP, OSPFv2, and OSPFv3?
6. What is a VLAN and how does it work?
7. How does Layer 2 switching differ from Layer 3 switching?+