CCNA Discovery 2, Chapter 3
3.3.6: To remain reliable, your network design should take into account the need for backup power and redundant connections. You should also plan your Layer 3 topology by keeping in mind the type of applications you choose. IP phones and cameras require an IP address, so your IP addressing scheme should allow for these devices in addition to your host. Days 20 and 18 further discuss Layer 3 IP addressing and design.
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