Computer Networking
Which of the following is true regarding VLANs?

You should not have more than 10 switches in the same VTP domain.
VTP is used to send VLAN information to switches in a configured VTP domain.
All VLANs are configured at the fastest switch and, by default, propagate this information to all other switches.
You must have at least two VLANs defined in every Cisco switched network.

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Computer Networking
X.21 is

a method of determining which device has access to the transmission medium at any time
None of these
network access standard for connecting stations to a circuit-switched network
a method access control technique for multiple-access transmission media
a very common bit-oriented data link protocol issued by ISO

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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
255.248.0.0
255.224.0.0
255.252.0.0

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