You are designing a network that includes IP QoS. Which two architectures could be used to ensure that IP QoS is implemented properly? (Choose two.)

RSVP is the signaling protocol for Integrated Services, not Differentiated Services; DiffServ has no signaling protocol and instead uses per-packet DSCP markings for classification.

Integrated Services (IntServ) uses RSVP as its signaling protocol to explicitly reserve bandwidth and resources on every router along an end-to-end path before data flows begin, providing guaranteed per-flow QoS.

Using information carried within each packet to make resource-allocation decisions is the defining characteristic of Differentiated Services, not Integrated Services; IntServ uses out-of-band RSVP signaling to pre-reserve resources.

Differentiated Services (DiffServ) relies on the DSCP bits embedded in each packet's IP header to classify traffic into behavior aggregates, allowing each router to make independent, per-hop forwarding and scheduling decisions without any prior reservation signaling.

Integrated Services uses RSVP - not DSCP - as its signaling protocol; DSCP is a packet-marking field used exclusively within the DiffServ architecture for per-hop behavior classification.