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CCNA Cyber Ops SECFND 210-250 Official Cert Guide, First Edition by Stefano De Crescenzo, Joseph Muniz, Omar Santos

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Appendix A. Answers to the “Do I Know This Already?” Quizzes and Q&A Questions

Answers to the “Do I Know This Already?” Quizzes

Chapter 1

1. A. The transport layer is concerned with end-to-end communication and provides multiplexing through the use of sockets.

2. C. CSMA/CD allows stations to detect a collision. When that occurs, each station waits a random time, called the backoff time, before retransmitting.

3. A. Hubs and repeaters simply regenerate the signal and transmit to all ports.

4. A. A MAC address table includes information about the MAC address and the port where the frame should be forwarded.

5. A and B. A wireless LAN controller provides station authentication, QoS, security management. and other management services.

6. A. ...

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