### Instruction:

Extract the cause and effect entities from the following sentence:
Dynamic DNS: It is possible to dynamically send updates to the DNS server(s) whenever the situation of the internal network changes

### Assistant:

KEYWORD: whenever
VARIABLE: It
CONDITION: is possible to dynamically send updates to the DNS server(s)
CAUSE_1: the situation of the internal network changes
NOT_RELEVANT: Dynamic DNS:
EFFECT_1: It is possible to dynamically send updates to the DNS server(s)

