Nokia NRS I Certification Exam Prep | Network Routing Specialist I | Verified Questions & Answers | Latest 2026/2027 Update

Nokia NRS I Certification Exam Prep | Network Routing Specialist I | Verified Questions & Answers | Latest 2026/2027 Update 3.1 Which of the following is NOT a type of Layer 2 network? a. Point-to-point network b. Circuit-based network c. Virtual private routed network d. Shared network - ANSWER -c. Virtual private routed network 3.2 Which of the following statements about SONET/SDH is FALSE? a. SONET/SDH is a Layer-1 technology. b. SDH is used primarily in North America. c. The basic SONET frame is the STS-1. d. An STS-1 frame is exactly one third of an STM-1 frame. - ANSWER -b. SDH is used primarily in North America. 3.3 Which Ethernet frame field is found in the Ethernet II frame header but NOT in the Ethernet 802.3 frame header? a. Preamble b. Start Frame Delimiter c. Source address d. Type - ANSWER -d. Type 3.4 Which address type is used to send frames to all devices in a Local Area Network? a. Anycast b. Multicast c. Broadcast d. Unicast - ANSWER -c. Broadcast 3.5 Which of the following is NOT a characteristic of a hub? a. It performs signal amplification. b. It replicates Ethernet frames across all ports except the receiving port. c. It inspects Layer 2 frame headers. d. It operates in half-duplex mode. - ANSWER -c. It inspects Layer 2 frame headers. 3.6 After all PCs in the below network have communicated with each other, which interface will switch D populate in its MAC FDB for PC1? a. 1/1/1 b. 1/1/2 c. 1/1/3 d. 1/1/4 e. 1/1/6 - ANSWER -d. 1/1/4 worthless question without pics... :P 3.7 What happens when a switch receives an Ethernet frame with an unknown source MAC address and a destination MAC address of ff:ff:ff:ff:ff:ff? a. The destination MAC address is saved in the MAC FDB, and the frame is discarded. b. The destination MAC address is saved in the MAC FDB, and the frame is flooded to all ports except the receiving port. c. The source MAC address is saved in the MAC FDB, and the frame is discarded. d. The source MAC address is saved in the MAC FDB, and the frame is flooded to all ports except the receiving port. - ANSWER -d. The source MAC address is saved in the MAC FDB, and the frame is flooded to all ports except the receiving port. 3.8 An Ethernet Local Area Network (LAN) consists of the components shown in the diagram. How many broadcast and collision domains are on this LAN? a. 2 broadcast domains, 7 collision domains b. 2 broadcast domains, 9 collision domains c. 3 broadcast domains, 7 collision domains d. 3 broadcast domains, 9 collision domains e. 7 broadcast domains, 9 collision domains - ANSWER -e. 7 broadcast domains, 9 collision domains worthless without picture! 3.9 Which of the following statements about LAG is FALSE? a. It aggregates physical links between devices. b. It improves performance by increasing bandwidth between devices. c. It provides point-to-point redundancy between devices. d. It supports auto-negotiation on ports in the LAG. - ANSWER -d. It supports auto-negotiation on ports in the LAG. 3.10 Which of the following protocols is used to prevent loops in Ethernet networks? a. LAG b. STP c. ARP d. ICMP - ANSWER -b. STP 3.11 An 8-port Ethernet switch is configured with VLAN 100 on ports 1-4, and VLAN 200 on ports 5-8. What happens when the switch receives a frame with an unknown destination address on port 1? a. The switch will flood the frames on ports 1 to 4. b. The switch will flood the frames on ports 2 to 4. c. The switch will flood the frames on ports 5 to 8. d. The switch will flood the frames on ports 2 to 8. - ANSWER -b. The switch will flood the frames on ports 2 to 4.