Nokia QoS study guide
Nokia QoS · Work through your exam, one topic at a time.
The Nokia QoS credential is a specialist certification for network engineers who design, configure, and operate quality-of-service treatment on Nokia IP and transport infrastructure. It suits candidates who already work with Nokia service provider or mission-critical networks - IP routing and switching, mobile transport, or fixed access - and who need to prove they can turn traffic classes into predictable, enforceable behaviour rather than just configure queues. The Nokia QoS study guide has 6 sections and about 2,083 words.
01QoS fundamentals and Nokia QoS architecture
This domain checks that you can separate the five QoS actions - classification, marking, policing, shaping and queuing/scheduling - and place each at the correct point in a Nokia DiffServ network. You must know what a trust boundary is and why the first trusted device sets DSCP/EXP.
348 words, about 2 min02QoS classification
This domain tests how Nokia IP routers inspect packets, assign forwarding class and profile, and how those decisions are expressed in SAP ingress and network QoS policies. SAP ingress QoS policy match criteria can include IP criteria (DSCP, IP 5-tuple), MAC criteria (802.1p, source/destination MAC), and default.
346 words, about 2 min03marking and queuing on Nokia IP routers
Nokia IP routers (SR OS on 7750 SR/7950 XRS) implement queuing with a fixed set of forwarding classes, a scheduler policy per port or per SAP, a slope policy for WRED, and a port scheduler for port-level bandwidth. This domain tests that architecture and the marking that feeds it.
381 words, about 2 min04QoS policy configuration and service-level enforcement
This domain tests how policies are actually attached and enforced: SAP ingress/egress policies, network QoS policies, scheduler and slope policies, port schedulers, and subscriber-level SLA enforcement. A SAP ingress QoS policy is applied to a SAP with sap-ingress <policy ; a SAP egress policy with sap-egress ; a network QoS policy to a network interface or SDP.
330 words, about 2 min05QoS in mobile and fixed transport networks
This domain tests QoS across Nokia mobile backhaul and fixed broadband access, where the transport must honour radio/access-layer priorities and timing. Mobile backhaul maps QCI/5QI to DSCP or MPLS EXP at the cell site.
350 words, about 2 min06QoS monitoring, assurance and troubleshooting
This domain tests how you prove QoS is working and isolate faults on Nokia routers and access nodes. Use operational commands: show qos sap-ingress , show qos network , show qos scheduler , show qos slope , show port , monitor port , show service sap statistics , show service sdp statistics .
328 words, about 2 min