Before the widespread adoption of Layer-2 switches, networks used hubs to connect devices together. What were some the drawbacks to this? What kind of issues did Network Administratorsfrequently encounter in non-switched environments?

2. Describe the difference between managed and unmanaged switches. Is one type inherently better than theother? Give examples where each type would be used. Is cost a factor?

3. Consider what would happen if Layer 3 devices passed broadcasts. Broadcasts are like an intercom at nationwide department or grocery store. They should be at the local store, but imagine the chaos if every time someone got onto the intercom it was flooded through to all of the stores in that chain! Describe how this effect would impact modern IT infrastructures. Would there be any positive benefit to it?