NOKIA NRS I CERTIFICATION EXAM PREP | NETWORK ROUTING SPECIALIST I – ACTUAL
EXAM PRACTICE QUESTIONS AND 100% VERIFIED CORRECT ANSWERS | COMPLETE
EXAM PREP TESTBANK | GUARANTEED PASS | INSTANT DOWNLOAD PDF
CORE DOMAINS
1. IP Routing Fundamentals
2. Nokia SR OS Architecture and CLI
3. OSPF and IS-IS Routing Protocols
4. BGP Fundamentals and Policy Control
5. MPLS and Label Switching Concepts
6. Routing Security and Access Control
7. Network Troubleshooting and Diagnostics
8. QoS and Traffic Management
9. High Availability and Redundancy
TABLE OF CONTENTS
1. Introduction ........................................ 1
, 2. IP Routing Fundamentals ............................. 2
3. Nokia SR OS Architecture and CLI .................... 3
4. OSPF and IS-IS Routing Protocols .................... 4
5. BGP Fundamentals and Policy Control ................. 5
6. MPLS and Label Switching Concepts ................... 6
7. Routing Security and Access Control ................. 7
8. Network Troubleshooting and Diagnostics ............. 8
9. QoS and Traffic Management .......................... 9
10. High Availability and Redundancy ................... 10
11. Answer Key Summary ................................ 11
INTRODUCTION
The Nokia NRS I Certification Exam assesses foundational knowledge and practical skills
required for network routing professionals working with Nokia Service Router Operating
System (SR OS). This exam evaluates understanding of routing protocols, IP addressing,
MPLS, and network troubleshooting. Candidates must demonstrate the ability to
configure, verify, and maintain routing environments in real-world scenarios. The test
includes multiple-choice and scenario-based questions designed to measure both
,theoretical knowledge and applied decision-making. Emphasis is placed on operational
efficiency, protocol behavior, and best practices aligned with professional network
engineering standards.
SECTION 1: QUESTIONS 1–35
1. What is the primary purpose of a routing table?
A. Store MAC addresses
B. Map IP to MAC
🔴 C. Determine packet forwarding paths
D. Encrypt packets
🔵 Explanation: A routing table is used by routers to determine the best path to
forward packets.
2. Which protocol is used to resolve IP addresses to MAC addresses?
A. DNS
🔴 B. ARP
C. ICMP
D. BGP
🔵 Explanation: ARP maps IP addresses to MAC addresses in local networks.
, 3. What is the default administrative distance of OSPF?
A. 1
B. 90
🔴 C. 110
D. 120
🔵 Explanation: OSPF has a default administrative distance of 110.
4. Which command enters configuration mode in Nokia SR OS?
A. show config
🔴 B. configure
C. admin
D. enable
🔵 Explanation: "configure" is used to enter configuration mode in SR OS.
5. What is the purpose of loopback interfaces?
A. Forward traffic
🔴 B. Provide stable IP for routing
C. Encrypt data
D. Filter packets
🔵 Explanation: Loopbacks provide stable IP addresses used in routing protocols.
6. Which routing protocol uses link-state algorithm?
A. RIP
🔴 B. OSPF
EXAM PRACTICE QUESTIONS AND 100% VERIFIED CORRECT ANSWERS | COMPLETE
EXAM PREP TESTBANK | GUARANTEED PASS | INSTANT DOWNLOAD PDF
CORE DOMAINS
1. IP Routing Fundamentals
2. Nokia SR OS Architecture and CLI
3. OSPF and IS-IS Routing Protocols
4. BGP Fundamentals and Policy Control
5. MPLS and Label Switching Concepts
6. Routing Security and Access Control
7. Network Troubleshooting and Diagnostics
8. QoS and Traffic Management
9. High Availability and Redundancy
TABLE OF CONTENTS
1. Introduction ........................................ 1
, 2. IP Routing Fundamentals ............................. 2
3. Nokia SR OS Architecture and CLI .................... 3
4. OSPF and IS-IS Routing Protocols .................... 4
5. BGP Fundamentals and Policy Control ................. 5
6. MPLS and Label Switching Concepts ................... 6
7. Routing Security and Access Control ................. 7
8. Network Troubleshooting and Diagnostics ............. 8
9. QoS and Traffic Management .......................... 9
10. High Availability and Redundancy ................... 10
11. Answer Key Summary ................................ 11
INTRODUCTION
The Nokia NRS I Certification Exam assesses foundational knowledge and practical skills
required for network routing professionals working with Nokia Service Router Operating
System (SR OS). This exam evaluates understanding of routing protocols, IP addressing,
MPLS, and network troubleshooting. Candidates must demonstrate the ability to
configure, verify, and maintain routing environments in real-world scenarios. The test
includes multiple-choice and scenario-based questions designed to measure both
,theoretical knowledge and applied decision-making. Emphasis is placed on operational
efficiency, protocol behavior, and best practices aligned with professional network
engineering standards.
SECTION 1: QUESTIONS 1–35
1. What is the primary purpose of a routing table?
A. Store MAC addresses
B. Map IP to MAC
🔴 C. Determine packet forwarding paths
D. Encrypt packets
🔵 Explanation: A routing table is used by routers to determine the best path to
forward packets.
2. Which protocol is used to resolve IP addresses to MAC addresses?
A. DNS
🔴 B. ARP
C. ICMP
D. BGP
🔵 Explanation: ARP maps IP addresses to MAC addresses in local networks.
, 3. What is the default administrative distance of OSPF?
A. 1
B. 90
🔴 C. 110
D. 120
🔵 Explanation: OSPF has a default administrative distance of 110.
4. Which command enters configuration mode in Nokia SR OS?
A. show config
🔴 B. configure
C. admin
D. enable
🔵 Explanation: "configure" is used to enter configuration mode in SR OS.
5. What is the purpose of loopback interfaces?
A. Forward traffic
🔴 B. Provide stable IP for routing
C. Encrypt data
D. Filter packets
🔵 Explanation: Loopbacks provide stable IP addresses used in routing protocols.
6. Which routing protocol uses link-state algorithm?
A. RIP
🔴 B. OSPF
