A network administrator is analyzing BPDUs captured on a switch port. The BPDU contains the following fields: Protocol ID = 0, Version = 0, Type = 0, Flags = 0x00, Root ID = 32768/00:11:22:33:44:55, Root Path Cost = 0, Bridge ID = 32768/00:11:22:33:44:55, Port ID = 0x8001, Message Age = 0, Max Age = 20, Hello Time = 2, Forward Delay = 15. What type of BPDU is this?

A topology change notification (TCN) BPDU.

A configuration BPDU sent by the root bridge.

An inferior BPDU that would be ignored by the receiving switch.

A superior BPDU that would trigger root protection.

A log message on a Junos device indicates that interface ge-0/0/2 is in a 'root-inconsistent' state. What is the most likely cause?

The interface received a superior BPDU while root protection was enabled

The interface is experiencing a hardware failure

The interface stopped receiving BPDUs while loop protection was enabled

The interface is configured as an edge port and received a BPDU

Which problem does loop protection specifically address?

A port that stops receiving BPDUs but continues to forward traffic, potentially causing a loop

A port that receives a superior BPDU and becomes a root port

A port that is manually configured as a root port

A port that receives too many BPDUs and becomes congested

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

Domain 6Objective 7

BPDU, Loop and Root Protection JN0-364 Practice Questions (Page 2)

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 13 practice questions to prepare you well beyond it. (estimate)

13questions here

3free pages

6concepts

Questions 6–10

6foundation · easy
What state does a port enter when loop protection is enabled and the port stops receiving BPDUs?
Select an answer first
7application · medium
A network administrator is analyzing BPDUs captured on a switch port. The BPDU contains the following fields: Protocol ID = 0, Version = 0, Type = 0, Flags = 0x00, Root ID = 32768/00:11:22:33:44:55, Root Path Cost = 0, Bridge ID = 32768/00:11:22:33:44:55, Port ID = 0x8001, Message Age = 0, Max Age = 20, Hello Time = 2, Forward Delay = 15. What type of BPDU is this?
Select an answer first
8foundation · easy
Which field in a Configuration BPDU is used by a bridge to determine whether a received BPDU is superior to its own?
Select an answer first
9foundation · easy
A log message on a Junos device indicates that interface ge-0/0/2 is in a 'root-inconsistent' state. What is the most likely cause?
Select an answer first
10foundation · easy
Which problem does loop protection specifically address?
Select an answer first

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BPDU, Loop and Root Protection JN0-364 Practice Questions (Page 2)

Questions 6–10

What state does a port enter when loop protection is enabled and the port stops receiving BPDUs?

Which field in a Configuration BPDU is used by a bridge to determine whether a received BPDU is superior to its own?

A log message on a Junos device indicates that interface ge-0/0/2 is in a 'root-inconsistent' state. What is the most likely cause?

Which problem does loop protection specifically address?

Keep studying — Spanning-Tree Protocols