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Refer to the exhibit. Communication exists between PC1 and PC2; however PC1 cant communicate with either PC3 or PC4.
**What can be done to allow those hosts to communicate? **
Configure a trunking protocol in Switch SW1.
Change the IP addresses of PC3 and PC4, so they belong to the 192.168.10.0/25 network.
Add a second switch and configure trunking between both switches.
This problem could be solved with either: a Router-on-a-Stick in any case, or with SVI's if you have a Layer-3 Switch
Regardless of the Switch model, the preferred solution would be to use Switched-Vritual-Interfaces (SVI)
only adding a Router-on-a-Stick will allow inter VLAN communication.
Each VLAN is considered a separate broadcast domain so it must have its own subnet address. To add communication between different VLANs, a router or Layer 3 Switch is needed. More switches can be added into the design, but the inter-VLAN configuration would not be possible without a router or L3 Switch. Trunk links are needed to carry multiple VLANs between switches. / - - - - - {enhanced this question on 20151221/zgz} - - - NOTE: SVI's are now a CCNA Exam objective, if you don't have live equipment, some simulators don't support creating them, packettracer does. - - - For the exam, make sure you can configure both of them, once you practice a few times, they are both very easy
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