An administrator has configured root guard on a port that connects to a downstream switch. The downstream switch is misconfigured with a lower bridge priority than the current root. What will happen to the port on the upstream switch?

The port will transition to a root-inconsistent state and block traffic.

The port will remain forwarding but ignore the superior BPDU.

The port will become the new root port and the downstream switch will become the root.

The port will be error-disabled and require manual intervention.

A switch port is configured with PortFast and BPDU guard. An unauthorized switch is connected to this port and sends a BPDU. What will happen to the port?

The port will transition to a root-inconsistent state and block traffic.

The port will be placed in an error-disabled state and will not forward traffic until manually re-enabled or configured to auto-recover.

The port will ignore the BPDU and continue forwarding.

The port will become a root port and the unauthorized switch will become the root.

A network engineer is reviewing the spanning tree status of a switch. The output shows that port Gi0/1 is in the 'discarding' state and has a role of 'altn'. What does this indicate?

Gi0/1 is a root port that is not forwarding yet.

Gi0/1 is an alternate port that provides a redundant path to the root bridge.

Gi0/1 is a designated port that is temporarily disabled.

Gi0/1 is a backup port for the same segment.

What does root guard do when it receives a superior BPDU on a port?

It changes the port to a designated port

It ignores the BPDU and keeps the port forwarding

It immediately shuts down the port

It places the port in a root-inconsistent state, blocking the port

CiscoCertified Network Associate (CCNA)

Domain 2Objective 5

2.5 Interpret Basic Operations of Rapid PVST+ Spanning Tree Protocol 200-301 Practice Questions (Page 4)

Part of the Network Access domain, which accounts for 20% of the 200-301 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~10–16 in this domain), expect 1–2 from this objective — we provide 36 practice questions to prepare you well beyond it. (estimate)

36questions here

8free pages

9concepts

20%of the exam

Questions 16–20

16application · medium
An administrator has configured root guard on a port that connects to a downstream switch. The downstream switch is misconfigured with a lower bridge priority than the current root. What will happen to the port on the upstream switch?
Select an answer first
17application · medium
A switch port is configured with PortFast and BPDU guard. An unauthorized switch is connected to this port and sends a BPDU. What will happen to the port?
Select an answer first
18application · medium
A network engineer is reviewing the spanning tree status of a switch. The output shows that port Gi0/1 is in the 'discarding' state and has a role of 'altn'. What does this indicate?
Select an answer first
19foundation · easy
What state does a port enter when loop guard detects that BPDUs have stopped arriving on a root or alternate port?
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20foundation · easy
What does root guard do when it receives a superior BPDU on a port?
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