A service provider has a redundant network with two switches connected by two links. One link is the root port, and the other is an alternate port. Due to a unidirectional link failure, BPDUs stop arriving on the alternate port. The alternate port, which should remain blocked, incorrectly transitions to forwarding, causing a loop. The administrator wants to prevent this from happening. What should be configured on the alternate port?

Enable BPDU guard on the alternate port.

Configure the alternate port as an edge port.

Enable loop guard on the alternate port.

Enable root guard on the alternate port.

What is the primary purpose of BPDU guard on a Juniper switch port?

To prevent the port from forwarding traffic when BPDUs stop

To prevent the port from becoming a root port

To limit the rate of BPDUs sent on the port

To disable the port if it receives a BPDU

Which statement correctly describes the behavior of BPDU guard on a Juniper switch?

It disables the port when a BPDU is received.

It prevents the port from sending BPDUs.

It ignores BPDUs received on the port.

It automatically re-enables the port after a timeout.

What is the purpose of loop guard in spanning-tree protocol?

To limit the rate of BPDUs on a port

To prevent a port from becoming a root port

To disable a port when a BPDU is received

To prevent alternate or root ports from transitioning to forwarding when BPDUs stop

Juniper NetworksCertified Specialist, Service Provider Routing and Switching (JNCIS-SP)

Domain 6Objective 5

Spanning-Tree Security JN0-364 Practice Questions (Page 1)

Part of the Spanning-Tree Protocols domain, which makes up ~8% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~3–5 in this domain), expect 1–1 from this objective — we provide 15 practice questions to prepare you well beyond it. (estimate)

15questions here

3free pages

7concepts

Questions 1–5

1application · medium
A service provider has a redundant network with two switches connected by two links. One link is the root port, and the other is an alternate port. Due to a unidirectional link failure, BPDUs stop arriving on the alternate port. The alternate port, which should remain blocked, incorrectly transitions to forwarding, causing a loop. The administrator wants to prevent this from happening. What should be configured on the alternate port?
Select an answer first
2foundation · easy
What is the primary purpose of BPDU guard on a Juniper switch port?
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3foundation · easy
Which statement correctly describes the behavior of BPDU guard on a Juniper switch?
Select an answer first
4foundation · easy
What is the purpose of loop guard in spanning-tree protocol?
Select an answer first
5foundation · easy
Which feature is commonly used to mitigate MAC address flooding attacks?
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Spanning-Tree Security JN0-364 Practice Questions (Page 1)

Questions 1–5

What is the primary purpose of BPDU guard on a Juniper switch port?

Which statement correctly describes the behavior of BPDU guard on a Juniper switch?

What is the purpose of loop guard in spanning-tree protocol?

Which feature is commonly used to mitigate MAC address flooding attacks?

Keep studying — Spanning-Tree Protocols