What is difference between filter() and map() in Rx.js?

Question

Is it possible to block all Data traffic for a specific UE by sending Diameter-Rx AAR command to the PCRF?
If yes, can you indicate AVPs shall be present in the AAR?
May I suppose the following AVP list
- Subscription-Id Containing the targeted MSISDN/IMSI
- Framed-IP-Address or Framed-IPv6-Prefix (containing the IP-address allocated to the UE)
- Media-Component-description containing the following Sub AVP
- Media-Component-number Mandatory sub-AVP
- Flow-Status set to DISABLED

Answer 1

Filter - It emits only those items from an Observable that pass a predicate test
Map - It transforms the items emitted by an Observable by applying a function to each item