A host entering an IEEE $802\mathrm{.}11$ wireless network implements

when it receives a beacon frame from the AP and responds with an association request frame.

a$.$ passive scanning

b$.$ active scanning

c$.$ probe request

d$.$ association response

e$.$ association response

QUESTION $2$

the gateway router, MAC address GR$-$M$.$ In the IEEE $802\mathrm{.}3$ frame, the MAC address in the DESTINATION ADDRESS field is

$,$ and the MAC address in the SOURCE ADDRESS field is

a$.$ GR$-$M$,$ WH$-$A

b$.$ WH$-$A$,$ GR$-$M

c$.$ GR$-$M$,$ AP$-$M

d$.$ AP$-$M$,$ G$-$M

e$.$ WH$-$A$,$ G$-$M