Nokia Network Routing Specialist I (NRS I)
Certification Exam 2026 | All Questions
and Correct Answers | Graded A+ |
Verified Answers
Which of the following is NOT a characteristic of a hub? a. It can interconnect
hosts located in the same local area network. b. It replicates Ethernet frames
across all ports except the receiving port. c. It inspects layer-2 frame headers. d.
Devices connected to it must operate in half-duplex mode. ---------CORRECT
ANSWER-----------------c. It inspects layer-2 frame headers
Which address type is used to send frames to all devices in a Local Area Network?
a. Anycast b. Multicast c. Broadcast d. Unicast ---------CORRECT ANSWER-------------
----c. Broadcast
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. ---------
CORRECT ANSWER-----------------d. The source MAC address is saved in the MAC
FDB, and the frame is flooded to all ports except the receiving port
, Which TCP/IP layer is responsible for path determination and end-to-end
forwarding of datagrams? a. The Application layer b. The Transport layer c. The
Internet layer d. The Link layer ---------CORRECT ANSWER-----------------c. The
Internet layer
What information is part of the encapsulation done at the Link layer? a. Source
and destination MAC addresses b. Source and destination IP addresses c. Source
and destination port numbers d. Source and destination email addresses ---------
CORRECT ANSWER-----------------a. Source and destination MAC addresses
Which of the following is NOT a function of the control plane in a router? a. To
exchange control messages with other routers b. To collaborate with other
routers to find the best way to forward data packets c. To populate the routing
table and the tunnel table d. To forward data packets towards their destination ---
------CORRECT ANSWER-----------------d. To forward data packets towards their
destination
Which of the following shows a typical data packet flow when egressing a Nokia
7750 SR? a. SF/CPM -> MDA -> IOM -> SFP b. SF/CPM -> SFP -> IOM -> MDA c.
SF/CPM -> IOM -> MDA -> SFP d. MDA -> IOM -> SF/CPM -> SFP ---------CORRECT
ANSWER-----------------c. SF/CPM -> IOM -> MDA -> SFP
Which of the following about MD-CLI is FALSE? a. MD-CLI allows atomic
transactions. b. Multiple users may edit the global candidate configuration
Certification Exam 2026 | All Questions
and Correct Answers | Graded A+ |
Verified Answers
Which of the following is NOT a characteristic of a hub? a. It can interconnect
hosts located in the same local area network. b. It replicates Ethernet frames
across all ports except the receiving port. c. It inspects layer-2 frame headers. d.
Devices connected to it must operate in half-duplex mode. ---------CORRECT
ANSWER-----------------c. It inspects layer-2 frame headers
Which address type is used to send frames to all devices in a Local Area Network?
a. Anycast b. Multicast c. Broadcast d. Unicast ---------CORRECT ANSWER-------------
----c. Broadcast
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. ---------
CORRECT ANSWER-----------------d. The source MAC address is saved in the MAC
FDB, and the frame is flooded to all ports except the receiving port
, Which TCP/IP layer is responsible for path determination and end-to-end
forwarding of datagrams? a. The Application layer b. The Transport layer c. The
Internet layer d. The Link layer ---------CORRECT ANSWER-----------------c. The
Internet layer
What information is part of the encapsulation done at the Link layer? a. Source
and destination MAC addresses b. Source and destination IP addresses c. Source
and destination port numbers d. Source and destination email addresses ---------
CORRECT ANSWER-----------------a. Source and destination MAC addresses
Which of the following is NOT a function of the control plane in a router? a. To
exchange control messages with other routers b. To collaborate with other
routers to find the best way to forward data packets c. To populate the routing
table and the tunnel table d. To forward data packets towards their destination ---
------CORRECT ANSWER-----------------d. To forward data packets towards their
destination
Which of the following shows a typical data packet flow when egressing a Nokia
7750 SR? a. SF/CPM -> MDA -> IOM -> SFP b. SF/CPM -> SFP -> IOM -> MDA c.
SF/CPM -> IOM -> MDA -> SFP d. MDA -> IOM -> SF/CPM -> SFP ---------CORRECT
ANSWER-----------------c. SF/CPM -> IOM -> MDA -> SFP
Which of the following about MD-CLI is FALSE? a. MD-CLI allows atomic
transactions. b. Multiple users may edit the global candidate configuration
