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350-501 Networking Practice Question

An SP is designing an OSPF network with a totally stubby area to reduce the LSA database. Which LSA types are blocked by default in a totally stubby area?

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

Type 3, Type 4, and Type 5

Totally stubby area blocks Type 4 (ASBR Summary) and Type 5 (External) LSAs, and also Type 3 (Summary) LSAs except for the default route.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Type 3 and Type 5 only

    Why it's wrong here

    Type 4 is also blocked.

  • Type 5 only

    Why it's wrong here

    It blocks more than Type 5.

  • Type 3, Type 4, and Type 5

    Why this is correct

    Totally stubby blocks all inter-area (Type 3) except default, and all external (Type 4/5).

  • Type 4 and Type 5 only

    Why it's wrong here

    It also blocks Type 3 except default.

Visual reference

R1 R2 R3 R4 10 100 10 100 OSPF picks R1→R2→R4 (cost 20) over R1→R3→R4 (cost 200)

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This 350-501 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-501 exam.