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Juniper Exam JN0-351 Topic 7 Question 17 Discussion

Actual exam question for Juniper's JN0-351 exam
Question #: 17
Topic #: 7
[All JN0-351 Questions]

Which statement about aggregate routes is correct?

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Suggested Answer: B, C

Option B is correct.Flooding is a mechanism used in Layer 2 bridging where the switch sends incoming packets to all its ports except for the port where the packet originated1.This is done when the switch doesn't know the destination MAC address or when the packet is a broadcast or multicast1.

Option C is correct.Learning is another mechanism used in Layer 2 bridging where the switch learns the source MAC addresses of incoming packets and associates them with the port on which they were received23.This information is stored in a MAC address table, also known as a bridge table23.

Option A is incorrect.Blocking is a state in Spanning Tree Protocol (STP) used to prevent loops in a network2.It's not a mechanism used in building and maintaining a Layer 2 bridge table2.

Option D is incorrect.Listening is also a state in Spanning Tree Protocol (STP) where the switch listens for BPDUs to make sure no loops occur in the network before transitioning to the learning state2.It's not a mechanism used in building and maintaining a Layer 2 bridge table2.


by Josphine at Apr 28, 2024, 05:46 AM

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Glennis
2 days ago
I'm not sure, but I think aggregate routes are always preferred over more specific routes.
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Grover
4 days ago
I agree with Cristina, aggregate routes are used for advertising summarized network prefixes.
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Pansy
5 days ago
I'm pretty sure B is wrong. Aggregate routes are not automatically generated for all subnets in a routing table.
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Cristina
5 days ago
I think the correct statement about aggregate routes is D.
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Tu
10 days ago
I think D is the correct answer. Aggregate routes are used to advertise summarized network prefixes, which helps to reduce the size of routing tables.
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