Cisco CCNA 200-301 Practice Question

The antennas' radiation patterns are not suitable for providing coverage across multiple floors. Standard omnidirectional antennas emit signals primarily in a horizontal direction, which means their vertical coverage is limited. This can result in weak signals on floors above or below the access point. To address this, antennas with different radiation patterns, such as downtilt or directional antennas, can be used to improve vertical coverage. While overlapping channels and external interference can degrade network performance, they would affect all users in the area rather than specifically those on the upper floors. Incorrect network identifiers (SSIDs) would prevent devices from connecting to the network at all, not just cause weak signals.