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Nokia NRS I Certification Actual Exam
Questions and Answers with Rationales
2026/2027 | Network Routing Specialist I |
Pass Guarantee
Q001: You are configuring a Nokia 7750 SR router running SR OS 22.10. Which
CLI context must you enter to configure an LDP-enabled interface for MPLS
transport?
Options:
A. configure service
B. configure router interface
C. configure router mpls ldp interface-parameters interface
D. configure router ldp interface
ANSWER: C
Q002: A Nokia SR OS router is participating in an OSPF Area 0 backbone. You
need to advertise a summary route for 10.10.0.0/16 through 10.10.255.0/16. Which
command correctly configures this summary route in OSPF?
Options:
A. configure router ospf area 0 summary 10.10.0.0/16
B. configure router ospf area 0 range 10.10.0.0/16 type summary
C. configure router ospf area 0 aggregate 10.10.0.0/16
D. configure router ospf area 0 range 10.10.0.0/16 advertise
ANSWER: D
Q003: In a Nokia MPLS network, you are troubleshooting an LSP that is down.
Which CLI command displays the LSP path, protected path status, and operational
state in a single output?
, 2
Options:
A. show router lsp
B. show router mpls path detail
C. show router mpls lsp extensive
D. show router mpls lsp path detail
ANSWER: C
Q004: You are configuring a BGP session on a Nokia 7750 SR with a peer IP of
192.168.1.1 in autonomous system 65001. Which command correctly establishes
the BGP peering relationship?
Options:
A. configure router bgp neighbor 192.168.1.1 remote-as 65001
B. configure service bgp group peer 192.168.1.1 as 65001
C. configure router bgp group remote-as 65001 neighbor 192.168.1.1
D. configure router bgp neighbor 192.168.1.1 local-address 192.168.1.2 peer-as
65001
ANSWER: D
Q005: A Nokia SR OS router is configured with IS-IS as the IGP. You need to
verify the SPF calculations and TED database entries for MPLS traffic
engineering. Which command provides this information?
Options:
A. show router isis spf-log
B. show router isis database
C. show router isis ted
D. show router isis adjacency
ANSWER: A
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Q006: You are implementing a VPLS service on Nokia SR OS. Which service
configuration correctly creates a VPLS instance with service ID 100 and adds
customer-facing SAP 1/1/1:100 to it?
Options:
A. configure service vpls 100 customer 1 create sap 1/1/1:100
B. configure service vpls 100 create customer 1 sap 1/1/1:100
C. configure service vpls 100 create sap 1/1/1:100
D. configure service vpls 100 create customer 1 sap 1/1/1:100 split-horizon
ANSWER: C
Q007: In a Nokia MPLS Layer 3 VPN, you need to configure an export policy to
attach a route target for VPN-A customers. Which policy statement correctly adds
RT 65001:100?
Options:
A. configure policy-options policy-statement VPN-A-export term 1 from
community add 65001:100
B. configure policy-options policy-statement VPN-A-export term 1 then
community add VPN-A-target
C. configure policy-options policy-statement VPN-A-export term 1 then
community add target:65001:100
D. configure policy-options policy-statement VPN-A-export term 1 from protocol
bgp then community add target:65001:100
ANSWER: C
Q008: A Nokia 7750 SR router shows a BGP neighbor in "Active" state for over 30
minutes. Which command helps identify the specific TCP connection failure
reason?
Options:
A. show router bgp neighbor 192.168.1.1 status
Nokia NRS I Certification Actual Exam
Questions and Answers with Rationales
2026/2027 | Network Routing Specialist I |
Pass Guarantee
Q001: You are configuring a Nokia 7750 SR router running SR OS 22.10. Which
CLI context must you enter to configure an LDP-enabled interface for MPLS
transport?
Options:
A. configure service
B. configure router interface
C. configure router mpls ldp interface-parameters interface
D. configure router ldp interface
ANSWER: C
Q002: A Nokia SR OS router is participating in an OSPF Area 0 backbone. You
need to advertise a summary route for 10.10.0.0/16 through 10.10.255.0/16. Which
command correctly configures this summary route in OSPF?
Options:
A. configure router ospf area 0 summary 10.10.0.0/16
B. configure router ospf area 0 range 10.10.0.0/16 type summary
C. configure router ospf area 0 aggregate 10.10.0.0/16
D. configure router ospf area 0 range 10.10.0.0/16 advertise
ANSWER: D
Q003: In a Nokia MPLS network, you are troubleshooting an LSP that is down.
Which CLI command displays the LSP path, protected path status, and operational
state in a single output?
, 2
Options:
A. show router lsp
B. show router mpls path detail
C. show router mpls lsp extensive
D. show router mpls lsp path detail
ANSWER: C
Q004: You are configuring a BGP session on a Nokia 7750 SR with a peer IP of
192.168.1.1 in autonomous system 65001. Which command correctly establishes
the BGP peering relationship?
Options:
A. configure router bgp neighbor 192.168.1.1 remote-as 65001
B. configure service bgp group peer 192.168.1.1 as 65001
C. configure router bgp group remote-as 65001 neighbor 192.168.1.1
D. configure router bgp neighbor 192.168.1.1 local-address 192.168.1.2 peer-as
65001
ANSWER: D
Q005: A Nokia SR OS router is configured with IS-IS as the IGP. You need to
verify the SPF calculations and TED database entries for MPLS traffic
engineering. Which command provides this information?
Options:
A. show router isis spf-log
B. show router isis database
C. show router isis ted
D. show router isis adjacency
ANSWER: A
, 3
Q006: You are implementing a VPLS service on Nokia SR OS. Which service
configuration correctly creates a VPLS instance with service ID 100 and adds
customer-facing SAP 1/1/1:100 to it?
Options:
A. configure service vpls 100 customer 1 create sap 1/1/1:100
B. configure service vpls 100 create customer 1 sap 1/1/1:100
C. configure service vpls 100 create sap 1/1/1:100
D. configure service vpls 100 create customer 1 sap 1/1/1:100 split-horizon
ANSWER: C
Q007: In a Nokia MPLS Layer 3 VPN, you need to configure an export policy to
attach a route target for VPN-A customers. Which policy statement correctly adds
RT 65001:100?
Options:
A. configure policy-options policy-statement VPN-A-export term 1 from
community add 65001:100
B. configure policy-options policy-statement VPN-A-export term 1 then
community add VPN-A-target
C. configure policy-options policy-statement VPN-A-export term 1 then
community add target:65001:100
D. configure policy-options policy-statement VPN-A-export term 1 from protocol
bgp then community add target:65001:100
ANSWER: C
Q008: A Nokia 7750 SR router shows a BGP neighbor in "Active" state for over 30
minutes. Which command helps identify the specific TCP connection failure
reason?
Options:
A. show router bgp neighbor 192.168.1.1 status
