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Question 257 of 1,052
mediummulti selectObjective-mapped
CCNA Practice Question: Which TWO statements correctly describe…
This 200-301 practice question tests your understanding of which two statements correctly describe…. 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 TWO statements correctly describe EtherChannel configuration and verification with LACP?
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
✓
LACP uses the modes 'active' and 'passive' to negotiate an EtherChannel.
This question tests understanding of LACP EtherChannel modes and show commands. The correct answers identify that LACP uses active/passive modes and that 'show etherchannel summary' displays port-channel status (SU, SD, etc.). The incorrect options confuse PAgP with LACP, misstate mode compatibility, or misdescribe verification output.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
LACP uses the modes 'active' and 'passive' to negotiate an EtherChannel.
- ✗
LACP uses the modes 'desirable' and 'auto' to negotiate an EtherChannel.
- ✓
The command 'show etherchannel summary' displays the status of each port-channel as SU (in use) or SD (shutdown).
Why this is correct
In the output of 'show etherchannel summary', the first column shows the port-channel status: 'SU' means Layer 2 port-channel is in use and up, 'SD' means the port-channel is administratively down.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
The command 'show etherchannel summary' displays the status of each port-channel as UP or DOWN.
Why it's wrong here
The 'show etherchannel summary' command uses two-letter codes like SU (Layer 2 up), SD (shutdown), etc. It does not display 'UP' or 'DOWN' in plain text.
- ✗
LACP 'active' mode can only form an EtherChannel with another interface in 'active' mode.
Why it's wrong here
LACP 'active' mode can form an EtherChannel with either 'active' or 'passive' mode. If both sides are passive, the channel will not form because neither initiates negotiation.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
✓LACP uses the modes 'active' and 'passive' to negotiate an EtherChannel.Correct answer▾
Why this is correct
LACP defines 'active' (initiates negotiation) and 'passive' (responds to negotiation) modes. At least one side must be active to form a channel.
✗LACP uses the modes 'desirable' and 'auto' to negotiate an EtherChannel.Wrong answer — click to see why▾
Why this is wrong here
This option confuses PAgP modes with LACP modes. PAgP uses 'desirable' (initiates) and 'auto' (responds).
✗The command 'show etherchannel summary' displays the status of each port-channel as UP or DOWN.Wrong answer — click to see why▾
Why this is wrong here
This option inaccurately describes the output format. The correct status codes are two-letter abbreviations (e.g., SU, SD, SP, etc.).
✗LACP 'active' mode can only form an EtherChannel with another interface in 'active' mode.Wrong answer — click to see why▾
Why this is wrong here
This statement is too restrictive. Active mode can pair with passive mode as well; both active also works. Only passive-passive fails.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Trap categories for this question
Command / output trap
The 'show etherchannel summary' command uses two-letter codes like SU (Layer 2 up), SD (shutdown), etc. It does not display 'UP' or 'DOWN' in plain text.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 200-301 NAT questions on configuration and troubleshooting.
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FAQ
Questions learners often ask
What does this 200-301 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: LACP uses the modes 'active' and 'passive' to negotiate an EtherChannel. — This question tests understanding of LACP EtherChannel modes and show commands. The correct answers identify that LACP uses active/passive modes and that 'show etherchannel summary' displays port-channel status (SU, SD, etc.). The incorrect options confuse PAgP with LACP, misstate mode compatibility, or misdescribe verification output.
What should I do if I get this 200-301 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 200-301 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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