NSE7 Advanced Networking and SD-WAN Practice Question
A FortiGate is acting as an ABR between OSPF area 0 and area 1. The administrator needs to redistribute a static route into OSPF so that it appears as an inter-area route (Type 3 LSA). Which three steps are required? (Choose THREE.)
⚠ Common exam trap
Candidates often think a route map or metric type change is needed to produce Type 3 LSAs, but in reality, Type 3 LSAs are generated automatically by the ABR from redistributed routes when OSPF is properly enabled on interfaces, not from external route manipulation.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Verify the OSPF process has network statements covering all interfaces
For OSPF to generate Type 3 LSAs from redistributed routes, the ABR must have OSPF enabled on its interfaces via network statements. Without these statements, the ABR cannot form adjacencies or propagate LSAs between areas, which is essential for inter-area route advertisement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Disable route summarization on the ABR
Why it's wrong here
Summarization is optional, not required.
- ✗
Configure a route map to set the metric type to Type 1
Why it's wrong here
Type 1 is not required; Type 3 is default for inter-area.
- ✓
Verify the OSPF process has network statements covering all interfaces
Why this is correct
Necessary for OSPF adjacency and LSA propagation.
- ✓
Configure 'redistribute static' under OSPF on the ABR
Why this is correct
Enables redistribution of static routes.
- ✓
Ensure the static route is present in the routing table
Why this is correct
Redistribution requires the route to exist.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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