Which model is used to describe how data communication occurs between hosts?

• Server-centric model

• Workgroup model

• Peer-to-peer model

• OSI reference model

Layer 1 is the Physical Layer. Which two layers are next in order?

• Physical then Data Link then Network

• Physical then Network then Data Link

• Physical then Session then Network

• Physical then Network then Session

Which layer in the OSI model do MAC addresses and switches use?

• Physical

• Data Link

• Network

• Transport

• Session

Which layer in the OSI model covers routing between networks?

• Physical

• Data Link

• Network

• Transport

• Session

Which layer in the OSI model deal with Ports?

• Physical

• Data Link

• Network

• Transport

• Session

Which of the following is most commonly used for downloading files (guaranteed delivery)?

• DCCP

• TCP

• UDP

• SCTP

Which of the following is most commonly used for streaming media (connectionless communication)?

• DCCP

• TCP

• UDP

• SCTP

Which layer in the OSI model covers HTTP, FTP, Telnet and DNS?

• Presentation

• Application

• Session

• Transport

Which layer in the OSI model creates, manages and monitors connections?

• Presentation

• Application

• Session

• Transport

Which type of port is used for HTTPS?

• Well-known ports

• Dynamic ports

• Registered ports

• Open ports