Computer Networking
Which layer of international standard organization's OSI model is responsible for creating and recognizing frame boundaries?

transport layer
physical layer
data link layer
network layer
None of these

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Computer Networking
You are working with a network that has the network ID 10.9.0.0 and contains 73 networks. In the next year, you will be adding an additional 27 branch offices to your company. For simplified management, you want to keep the most possible hosts per subnet. Which subnet mask should you management, you want to keep the most possible hosts per subnet. Which subnet mask should you use?

255.254.0.0
255.240.0.0
255.252.0.0
255.224.0.0
255.248.0.0

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