Computer Networking
You are working with a network that has the network ID 192.168.10.0. What subnet should you use that supports four subnets and a maximum number of hosts?

255.255.255.252
255.255.255.224
255.255.255.240
255.255.255.248
255.255.255.192

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Computer Networking
You connect a host to a switch port, but the new host cannot log into the server that is plugged into the same switch. What could the problem be?

The switch port the host is connected to is not configured to the correct VLAN membership.
The router is not configured for the new host.
The VTP configuration on the switch is not updated for the new host.
The host has an invalid MAC address.

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Computer Networking
The data-link layer, in reference to the OSI model, specifies

All of these
the interface between the X.25 network and packet mode device
None of these
the virtual circuit interface to packet-switched service
data link procedures that provide for the exchange of data via frames that can be sent and received

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Computer Networking
X.21 is

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

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