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Quick Answer
The answer is RSTP’s three unique characteristics: its proposal/agreement handshake, alternate and backup port roles, and edge ports that transition directly to forwarding. Unlike STP’s reliance on timer-based convergence, RSTP uses a rapid handshake between bridges to immediately confirm a loop-free topology, while alternate and backup ports provide instant failover paths in discarding state, ready to forward without delay. On the CCNA 200-301 v2 exam, this topic tests your ability to distinguish protocol mechanics—a common trap is confusing shared features like root bridge priority or the three timers (Hello, Max Age, Forward Delay) as unique to RSTP, when both protocols use them. Remember the mnemonic “PEA” for RSTP’s differences: Proposal/agreement, Edge ports, and Alternate/backup roles.
CCNA Switching and Network Access Practice Question
This 200-301 practice question tests your understanding of switching and network access. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which three of the following are unique characteristics of RSTP (802.1w) compared to traditional STP (802.1D)? (Choose three.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
RSTP provides faster convergence by actively negotiating port roles using proposal/agreement handshakes.
RSTP (802.1w) differs from traditional STP (802.1D) in three key ways: 1) It uses a proposal/agreement handshake to achieve rapid convergence without waiting for timers. 2) It introduces alternate and backup port roles—alternate ports provide a path to the root bridge via another switch, and backup ports provide a redundant path on the same segment; both are discarding but ready to transition. 3) Edge ports (connected only to end hosts) move directly to the forwarding state, bypassing listening and learning. The incorrect options fail as differences: - Option C (root bridge with lower priority) is true for both STP and RSTP, so it is not a distinguishing characteristic. - Option E (only three timers) is also true for both; RSTP uses the same three timers (Hello, Max Age, Forward Delay). - Option F (eliminates BPDUs) is false—RSTP still uses BPDUs but with the Type field set to 2 and includes a flags byte for proposal/agreement.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that RSTP eliminates the root bridge election or changes the bridge priority requirement, when in fact the root bridge selection process is identical to 802.1D.
Detailed technical explanation
How to think about this question
Under the hood, RSTP's proposal/agreement handshake works by having a designated port send a proposal message, and the receiving switch immediately synchronizes its ports by placing all non-edge ports into a discarding state before sending an agreement back. This eliminates the need for the listening and learning states, which in STP can take up to 30 seconds (2x forward delay). In real-world scenarios, this is critical for networks with time-sensitive applications like VoIP or industrial automation, where sub-second failover is required.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
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FAQ
Questions learners often ask
What does this 200-301 question test?
Switching and Network Access — This question tests Switching and Network Access — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: RSTP provides faster convergence by actively negotiating port roles using proposal/agreement handshakes. — RSTP (802.1w) differs from traditional STP (802.1D) in three key ways: 1) It uses a proposal/agreement handshake to achieve rapid convergence without waiting for timers. 2) It introduces alternate and backup port roles—alternate ports provide a path to the root bridge via another switch, and backup ports provide a redundant path on the same segment; both are discarding but ready to transition. 3) Edge ports (connected only to end hosts) move directly to the forwarding state, bypassing listening and learning. The incorrect options fail as differences: - Option C (root bridge with lower priority) is true for both STP and RSTP, so it is not a distinguishing characteristic. - Option E (only three timers) is also true for both; RSTP uses the same three timers (Hello, Max Age, Forward Delay). - Option F (eliminates BPDUs) is false—RSTP still uses BPDUs but with the Type field set to 2 and includes a flags byte for proposal/agreement.
What should I do if I get this 200-301 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This 200-301 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 200-301 exam.
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