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This page has 5 Show Command Output Questions scenario questions for the 200-901 exam, each with detailed explanations and wrong-answer analysis.

How should I approach 200-901 scenario questions?

Read the full scenario before looking at the answer options. Identify the constraint or requirement in the scenario, then eliminate options that are generally true but wrong for this specific case. Scenario questions reward careful reading over pattern matching.

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Show Command Output Questions

Practise Cisco DevNet Associate 200-901 practice questions — original exam-style scenarios covering every exam domain, with detailed explanations, wrong-answer analysis, and common exam traps.

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Scenario guide

How to approach show command output questions

These questions present the output of IOS show commands — show ip route, show interfaces, show ip ospf neighbor, show vlan brief — and ask you to interpret what they reveal about the network state. Reading IOS output accurately is one of the highest-value skills on the CCNA.

Quick answer

Show Command Output Questions questions test whether you can apply the concept in context, not just recognise a definition.

How the topic appears in realistic exam-style scenarios.

Which detail in the question changes the correct answer.

How to eliminate plausible but wrong options.

How to connect the question back to the wider exam objective.

Practice scenarios

Question 1mediummultiple choice

Read the full Ansible explanation →

A network automation engineer is using Ansible to manage Cisco IOS devices. The playbook includes a task that executes a 'show version' command and registers the output. The engineer then wants to parse the output to extract the IOS version. Which approach should be used?

A
Use the 'cisco.ios.ios_command' module and parse the output with regex
Why wrong: Incorrect: While possible, 'ios_facts' is the recommended approach.
B
Use the 'cisco.ios.ios_command' module and the 'parse' option
Why wrong: Incorrect: The 'parse' option is not available in 'ios_command'.
C
Use the 'cisco.ios.ios_config' module to retrieve the version
Why wrong: Incorrect: 'ios_config' is for configuration, not show commands.
D
Use the 'cisco.ios.ios_facts' module to get structured facts
Correct: 'ios_facts' returns structured data including the IOS version.

Full breakdown with real-world context →

Question 2mediummultiple choice

Study the full Python automation breakdown →

A developer is designing a Python script to parse the output of 'show ip interface brief' from a Cisco IOS device. The output is stored in a string variable. The developer wants to extract only the interfaces that are up/up. The current code uses regular expressions but often fails because the interface names contain special characters (e.g., GigabitEthernet1/0/1). Which approach should the developer use to reliably parse the output?

A
Use the 're' module with a more complex pattern that escapes special characters
Why wrong: While possible, regex is brittle and hard to maintain; structured output is preferred.
B
Use split on whitespace and check column values
Why wrong: This may work for simple lines but fails if interface names contain spaces or if column alignment changes.
C
Use a structured data format like JSON or YAML if available from the device
Structured output is consistent, machine-readable, and immune to formatting changes.
D
Use a CSV parser with a custom delimiter
Why wrong: The output is not CSV; there is no consistent delimiter.

Full breakdown with real-world context →

Question 3easymultiple choice

Study the full Python automation breakdown →

Refer to the exhibit. A developer is parsing the output of 'show ip route' using Python. Which regular expression would extract the prefix '10.0.1.0/24'?

Exhibit

R1# show ip route
Codes: L - local, C - connected, S - static, R - RIP, O - OSPF, B - BGP
       D - EIGRP, EX - EIGRP external, N - NAPT
Gateway of last resort is 10.0.0.1
     10.0.0.0/8 is variably subnetted, 2 subnets
C       10.0.0.0/24 is directly connected, GigabitEthernet0/0
S       10.0.1.0/24 [1/0] via 10.0.0.2

A
r'^S\s+(\d+\/\d+)'
Why wrong: Only captures network and mask without dots, e.g., '10/24'.
B
r'^S.*(\d+\.\d+\.\d+\.\d+)'
Why wrong: Captures IP without subnet mask, and .* may skip prefix.
C
r'S\s+(\S+)'
Why wrong: Lacks start anchor and may match other lines with 'S'.
D
r'^S\s+(\d+\.\d+\.\d+\.\d+/\d+)'
Correctly anchors at line start and captures prefix.

Full breakdown with real-world context →

Question 4easymultiple choice

Review the full subnetting walkthrough →

You are troubleshooting connectivity for a remote branch office. The branch router (BR) connects to the head office router (HQ) via a point-to-point T1 link. The HQ router is also connected to the internet via a separate interface. Users at the branch can access the internet but cannot reach servers at the head office (subnet 10.10.10.0/24). You run 'show ip route' on BR and see a default route pointing to HQ's IP address, but no specific route for 10.10.10.0/24. The HQ router has a connected route for that subnet. On HQ, you see that the interface towards BR is up/up, and you can ping the BR's interface IP. What is the most likely cause of the issue?

A
The HQ router does not have a route for the branch's local subnet.
Without a return route, traffic from branch to HQ can leave but replies are dropped.
B
An ACL on the HQ router is blocking traffic from the branch subnet.
Why wrong: There is no indication of ACL blocks; the issue is more fundamental.
C
The default route on BR is not pointing to the correct next-hop.
Why wrong: If internet works, the default route is correct for outgoing traffic.
D
The T1 link is experiencing errors causing packet loss.
Why wrong: Internet connectivity works, so the link is functional.

Full breakdown with real-world context →

Question 5hardmultiple choice

Open the full VLAN trunking answer →

A network automation engineer is using a Python script with the requests library to configure VLAN 100 on a Cisco Catalyst 9300 switch via the REST API. The script sends a PUT request to https://switch-ip/restconf/data/Cisco-IOS-XE-native:native/vlan. The response returns a 201 Created, but subsequent checks show VLAN 100 is not present in the running configuration. The switch's management interface is in VLAN 99 with IP 10.10.99.10/24, and the engineer's workstation is on a different subnet (10.10.88.0/24). The switch has the following relevant configuration: ip default-gateway 10.10.99.1, and a route for 10.10.88.0/24 via 10.10.99.1. The engineer also verified that the REST API credentials are correct and that the switch's HTTP server is enabled. Which action should the engineer take to resolve the issue?

A
Resend the PUT request with the VLAN configuration nested under 'Cisco-IOS-XE-native:native/vlan' in YANG format.
Why wrong: The request structure appears correct as a 201 was returned. Resending would not fix the missing commit.
B
Reboot the switch to force the candidate configuration to become active.
Why wrong: Rebooting is an extreme measure and would not commit candidate changes; it might even discard uncommitted configurations.
C
Send a commit operation to the RESTCONF API using the 'cisco-ia:commit' RPC to apply the candidate datastore changes.
On Cisco IOS-XE devices, configuration changes via RESTCONF are staged in the candidate datastore and must be explicitly committed. This is the likely missing step.
D
Check the MTU on the switch's management interface to ensure it can accept the configuration payload.
Why wrong: MTU issues would likely cause a failed or dropped request, not a successful 201 response with no configuration change.

Full breakdown with real-world context →

These 200-901 practice questions are part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style 200-901 questions with detailed explanations, topic-based practice, mock exams, readiness tracking, and study analytics.

Show Command Output Questions

How to approach show command output questions

Quick answer

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Practice scenarios

A network automation engineer is using Ansible to manage Cisco IOS devices. The playbook includes a task that executes a 'show version' command and registers the output. The engineer then wants to parse the output to extract the IOS version. Which approach should be used?

Refer to the exhibit. A developer is parsing the output of 'show ip route' using Python. Which regular expression would extract the prefix '10.0.1.0/24'?

Exhibit