CWDP Outdoor and Mesh Networking Flashcards

A CWDP is designing a wireless bridge connecting two buildings 800 meters apart. Which antenna type is most appropriate for each end?

Answer: High-gain directional antennas (Yagi or parabolic dish) at both ends

High-gain directional antennas concentrate power along the point-to-point path, providing sufficient link budget over 800 meters.

What is the primary difference between a wireless bridge and a wireless mesh node?

Answer: A bridge connects two fixed points; a mesh node dynamically routes through multiple paths

Wireless bridges create fixed point-to-point or point-to-multipoint links, while mesh nodes dynamically discover and route through multiple paths.

In outdoor WLAN design, what is the purpose of calculating the link budget?

Answer: Verify that received signal strength will exceed the receiver's sensitivity threshold with adequate margin

Link budget analysis ensures that transmit power, gains, losses, and path loss result in adequate received signal at the far end.

Which WLAN standard introduced improvements specifically beneficial for outdoor mesh networks, including better multi-hop support?

Answer: IEEE 802.11s

IEEE 802.11s is the mesh networking amendment that defines peer discovery, security, and path selection for multi-hop Wi-Fi mesh.

A CWDP is designing a parking lot WLAN using outdoor APs. What IP67 rating indicates about the AP enclosure?

Answer: The enclosure is dust-tight and protected against immersion up to 1 meter for 30 minutes

IP67 means the enclosure is fully dust-tight (6) and can withstand water immersion up to 1 meter for 30 minutes (7).

What is the key benefit of using 802.11ax (Wi-Fi 6) APs in an outdoor high-density deployment such as a sports venue parking area?

Answer: OFDMA allows simultaneous transmission to multiple clients, improving efficiency in dense environments

OFDMA in Wi-Fi 6 subdivides channels into resource units, enabling parallel transmissions to multiple clients and improving dense-environment efficiency.