Computer Networking
Which of the following are benefits of VLANs?1. They increase the size of collision domains.2. They allow logical grouping of users by function.3. They can enhance network security.4. They increase the size of broadcast domains while decreasing the number of collision domains.5. They simplify switch administration.6. They increase the number of broadcast domains while decreasing the size of the broadcast domains.

1 and 5
2 and 4
2, 3 and 6
1, 3 and 5

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Computer Networking
The main difference between synchronous and asynchronous transmission is

the clocking is derived from the data in synchronous transmission
None of these
the pulse height is different.
the clocking is mixed with the data in asynchronous transmission
the bandwidth required is different

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