Nokia NRS I study guide
Nokia NRS I · Work through your exam, one topic at a time.
NRS I is the entry-level credential in Nokia's Service Routing Certification (SRC) Program, which Nokia lists alongside its Data Center Fabric, NSP, Fixed Networks, Optical Network Certification (ONC), 5G RAN, and Bell Labs RAN exam programs. Nokia describes the SRC Program as covering "the NRS I, NRS II, and SRA certifications" and frames its certification programs generally as industry-recognized credentials that build technical expertise and enhance professional standing. The Nokia NRS I study guide has 5 sections and about 1,586 words.
01IP Routing Fundamentals
This domain tests the forwarding logic behind Nokia IP networks: IPv4/IPv6 addressing, longest-prefix lookup, route preference, ARP/ND, static and dynamic routing, and the separation between control plane and data plane. Questions usually ask you to predict the chosen route or next hop rather than merely define a protocol.
323 words, about 2 min02Switching and Aggregation
This domain covers Layer 2 forwarding and aggregation in Nokia IP networks: 802.1Q VLANs, access versus trunk ports, STP/RSTP/MSTP, LAG and MC-LAG, QinQ, and the Nokia service model used to aggregate customer traffic. An access port sends frames untagged for one VLAN; a trunk port carries multiple VLANs with 802.1Q tags.
333 words, about 2 min03IP Network Automation (Network Services Platform)
This domain tests automation with Nokia’s Network Services Platform (NSP): model-driven management, YANG models, NETCONF and gRPC, telemetry, templates, workflows, service intent, and closed-loop assurance. Expect questions about how an intent becomes device configuration and how drift is detected.
306 words, about 2 min04IP Network Security
This domain tests hardening and policy enforcement in Nokia IP networks: management-plane protection, AAA, ACLs and CPM filters, uRPF, remote triggered blackhole, 802.1X, MACsec, and IPsec. The emphasis is on applying policy in the correct direction and plane.
311 words, about 2 min05IP Networks within Data Center and Transport Connectivity
This domain covers data-center fabrics and transport connectivity: leaf-spine underlays, EVPN-VXLAN overlays, ECMP, anycast gateways, multihoming, SR Linux, and transport technologies such as segment routing and optical transport. Questions often test how an overlay depends on a stable underlay.
313 words, about 2 min