Vendor: Nokia
Exam Code: 4A0-101
Exam Name: Nokia Interior Routing Protocols
Certification: Nokia Certifications
Total Questions: 315 Q&A
Updated on: Jun 17, 2026
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Which of the following types of networks are supported on an Alcatel-Lucent 7750 SR for OSPF? Choose two answers.
A. Broadcast
B. Non-broadcast multi-access
C. Point-to-point
D. Point-to-multipoint
Click on the exhibit.

The numbers beside the links are the metrics for that link.
Given the diagram, what path will traffic follow from router R2 to router R8, and from router R8 to router R2, if IS-IS is the routing protocol?
A. Router R2 to router R8 will follow (R2-R3-R5-R7-R8). Router R8 to R2 will follow (R8- R7-R5-R3-R2)
B. Router R2 to router R8 will follow (R2-R3-R4-R6-R7-R8). Router R8 to R2 will follow (R8-R7-R6-R4R3-R2)
C. Router R2 to router R8 will follow (R2-R3-R5-R7-R8). Router R8 to R2 will follow (R8- R7-R6-R4-R3R2)
D. Router R2 to router R8 will follow (R2-R3-R4-R6-R7-R8) Router R8 to R2 will follow (R8-R7-R5-R3-R2)
How is the DR selected when an OSPF router is added to a broadcast network?
A. The current DR is selected, if there is one. Otherwise, the router with the lowest priority is the DR. If priorities are the same, the DR is chosen based on the lowest RID.
B. The current DR is selected, if there is one. Otherwise, the router with the highest priority is the DR. If priorities are the same, the DR is chosen based on the highest RID.
C. The router with the lowest priority is the DR. If priorities are the same, the current DR is selected. Otherwise the DR is chosen based on the lowest RID.
D. The router with the highest priority is the DR. If priorities are the same, the current DR is selected. Otherwise the DR is chosen based on the highest RID.
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