A network administrator is configuring a WLAN. Why would the administrator change the default DHCP IPv4 addresses on an AP?

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Question:
A network administrator is configuring a WLAN. Why would the administrator change the default DHCP IPv4 addresses on an AP?

to eliminate outsiders scanning for available SSIDs in the area
to reduce the risk of unauthorized APs being added to the network
to reduce outsiders intercepting data or accessing the wireless network by using a well-known address range
to reduce the risk of interference by external devices such as microwave ovens

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