350-501 Networking Practice Question
A service provider is designing an OSPF network with multiple areas. Which two area types prevent Type 5 LSAs from being flooded? (Choose two.)
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
✓
Stub area
Stub and NSSA areas both block Type 5 LSAs; totally stubby also blocks Type 3/4.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Standard area
Why it's wrong here
Standard area allows Type 5 LSAs.
- ✓
Stub area
Why this is correct
Stub areas block Type 5 LSAs.
- ✗
Totally stubby area
Why it's wrong here
Totally stubby also blocks Type 3/4, but the question asks for two that block Type 5; stub and NSSA are correct.
- ✗
Backbone area
Why it's wrong here
Area 0 carries all LSAs.
- ✓
NSSA
Why this is correct
NSSA also blocks Type 5 LSAs.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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