Which BPDU type is used by a root bridge to advertise the spanning-tree parameters, such as the root bridge ID and path cost, to all other switches in the network?

Rapid Spanning Tree Protocol (RSTP) BPDU

Topology Change Notification (TCN) BPDU

Bridge Protocol Data Unit (BPDU) with the TCN flag set

Which type of BPDU is sent by a switch to announce a change in the active topology, such as a link failure or a port transitioning to forwarding?

Bridge Protocol Data Unit (BPDU) with the TCN flag set

Rapid Spanning Tree Protocol (RSTP) BPDU

Topology Change Notification (TCN) BPDU

A network engineer is designing a network with Juniper switches running RSTP. The network has a redundant topology with multiple paths. The engineer is concerned about the time it takes for the network to converge after a link failure. The engineer wants to ensure that convergence is as fast as possible while maintaining loop-free operation. Which statement correctly describes the role of BPDU timers in RSTP convergence?

RSTP relies on the forward delay timer for port state transitions, and reducing it speeds up convergence.

The hello timer must be reduced to 1 second to achieve fast convergence.

The max age timer is used to determine when a BPDU is stale, and reducing it speeds up convergence.

RSTP uses a proposal-agreement handshake to rapidly transition ports to forwarding, and the timers are used as fallback mechanisms.

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

Domain 6Objective 3

Bridge Protocol Data Units (BPDUs) JN0-364 Practice Questions (Page 3)

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

14questions here

3free pages

6concepts

Questions 11–14

11foundation · easy
Which BPDU type is used by a root bridge to advertise the spanning-tree parameters, such as the root bridge ID and path cost, to all other switches in the network?
Select an answer first
12foundation · easy
Which type of BPDU is sent by a switch to announce a change in the active topology, such as a link failure or a port transitioning to forwarding?
Select an answer first
13expert · hard
A network engineer is designing a network with Juniper switches running RSTP. The network has a redundant topology with multiple paths. The engineer is concerned about the time it takes for the network to converge after a link failure. The engineer wants to ensure that convergence is as fast as possible while maintaining loop-free operation. Which statement correctly describes the role of BPDU timers in RSTP convergence?
Select an answer first
14foundation · easy
Which feature is used on ports that connect to devices that do not participate in spanning tree, such as hosts or printers, to prevent them from sending or receiving BPDUs?
Select an answer first

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Bridge Protocol Data Units (BPDUs) JN0-364 Practice Questions (Page 3)

Questions 11–14

Which BPDU type is used by a root bridge to advertise the spanning-tree parameters, such as the root bridge ID and path cost, to all other switches in the network?

Which type of BPDU is sent by a switch to announce a change in the active topology, such as a link failure or a port transitioning to forwarding?

Which feature is used on ports that connect to devices that do not participate in spanning tree, such as hosts or printers, to prevent them from sending or receiving BPDUs?

Keep studying — Spanning-Tree Protocols