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Which Command Should the Administrator Use Practice 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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200-901
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Cisco
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Scenario guide

How to approach which command should the administrator use practice questions

Practise command-choice questions where the task is to identify the correct verification, configuration or troubleshooting command.

Quick answer

Which Command Should the Administrator Use Practice 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.

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Practice set

Practice scenarios

Question 1easymultiple choice
Review the full routing breakdown →

A network engineer is troubleshooting connectivity issues and wants to verify the path that packets take from a source to a destination IP address. Which OSI layer is primarily responsible for packet forwarding and routing?

Question 2hardmultiple choice
Full question →

A network engineer configures an HTTP/2 server. Which feature of HTTP/2 reduces overhead by compressing headers using HPACK?

Question 3easymultiple choice
Full question →

A developer needs to send a diagnostic request to a network device to verify if it supports a specific MIB object. Which protocol and operation should be used?

Question 4easymultiple choice
Open the full VLAN trunking answer →

A network engineer is configuring a new switch and needs to ensure that frames from VLAN 10 and VLAN 20 are isolated on the same trunk link to another switch. Which IEEE standard should be configured on the trunk interfaces?

Question 5hardmultiple choice
Review the full subnetting walkthrough →

An engineer is troubleshooting packet loss between two hosts on different subnets. The traceroute shows that packets reach the first hop router but then stop. The router's ARP table shows an incomplete entry for the next-hop IP address. What is the most likely cause?

Question 6mediumdrag order
Review the full OSPF breakdown →

Drag and drop the steps to configure OSPF on a Cisco router into the correct order.

Drag steps to the numbered slots on the right, or tap a step then tap a slot.

Steps
Order
1Step 1
2Step 2
3Step 3
4Step 4
5Step 5
Question 7mediummultiple choice
Read the full REST/YANG explanation →

A developer is writing a script that uses a REST API to configure network devices via NETCONF. Which layer of the SDN architecture does NETCONF belong to?

Question 8mediummultiple choice
Open the full VLAN trunking answer →

A network administrator configures a switch port to belong to VLAN 10. Which OSI layer is primarily involved in VLAN tagging?

Question 9easymultiple choice
Open the full VLAN trunking answer →

A network engineer is troubleshooting a connectivity issue between two hosts in different VLANs on the same switch. The hosts are in VLAN 10 and VLAN 20, respectively. The switch has an SVI for each VLAN and IP routing is enabled. Which command should be used to verify that the switch is forwarding traffic between the VLANs?

Question 10mediummultiple choice
Open the full VLAN trunking answer →

Refer to the exhibit. A switch has the VLAN configuration shown. If a device is connected to interface Gi0/3 and another to Gi0/5, can they communicate if the switch is not configured with any inter-VLAN routing?

Exhibit

Refer to the exhibit.
```
Switch# show vlan brief

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Gi0/1, Gi0/2
10   Engineering                      active    Gi0/3, Gi0/4
20   Marketing                        active    Gi0/5, Gi0/6
1002 fddi-default                     act/unsup
1003 token-ring-default               act/unsup
1004 fddinet-default                  act/unsup
1005 trnet-default                    act/unsup
```
Question 11hardmultiple choice
Open the full BGP breakdown →

A company has a three-tier data center architecture with access, aggregation, and core layers. The network team is migrating to a leaf-spine architecture to support increasing east-west traffic. The current network uses STP for loop prevention, and the team wants to eliminate STP in the new design. They plan to use VXLAN overlays with BGP EVPN for control plane. During a pilot deployment, the team notices that some legacy servers that rely on traditional VLANs are not reachable across the new fabric. The servers are connected to access switches that are part of the leaf layer. The access switches are configured as VXLAN tunnel endpoints (VTEPs) but the legacy servers are still using traditional VLANs. The team needs to ensure connectivity between the legacy VLAN-based servers and the new VXLAN-based network. What is the best approach to integrate these legacy servers without changing their configuration?

Question 12hardmultiple choice
Study the full Python automation breakdown →

Refer to the exhibit. A Python script uses the YANG model to configure the interface. After applying this JSON payload via a PATCH request, what is the expected operational state of the interface?

Exhibit

Refer to the exhibit.

{
  "ietf-interfaces:interface": {
    "name": "GigabitEthernet0/1",
    "description": "Link to Core",
    "type": "iana-if-type:ethernetCsmacd",
    "enabled": false,
    "ietf-ip:ipv4": {
      "address": [
        {
          "ip": "10.10.10.1",
          "netmask": "255.255.255.0"
        }
      ]
    }
  }
}
Question 13hardmultiple choice
Read the full DNS explanation →

Which DNS record type is used to verify domain ownership for email security protocols like SPF and DKIM?

Question 14mediumdrag order
Read the full REST/YANG explanation →

Drag and drop the steps to configure a Cisco IOS device for NETCONF access into the correct order.

Drag steps to the numbered slots on the right, or tap a step then tap a slot.

Steps
Order
1Step 1
2Step 2
3Step 3
4Step 4
5Step 5
Question 15easymultiple choice
Read the full REST/YANG explanation →

Refer to the exhibit. An engineer uses NETCONF to configure an interface. After applying this configuration, the interface is administratively up. However, the interface does not pass traffic. What is the most likely cause?

Exhibit

Refer to the exhibit.

{
  "ietf-interfaces:interface": {
    "name": "GigabitEthernet0/1",
    "description": "Configured via NETCONF",
    "type": "iana-if-type:ethernetCsmacd",
    "enabled": true,
    "ietf-ip:ipv4": {
      "address": [
        {
          "ip": "192.0.2.1",
          "netmask": "255.255.255.0"
        }
      ]
    }
  }
}

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