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Refer to the Exhibit 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 refer to the exhibit practice questions

Practise exhibit-style questions that ask you to read a topology, table, command output or diagram before choosing the best answer.

Quick answer

Exhibit-style questions test whether you can read a topology, command output, diagram or table before choosing the best answer.

How to extract the relevant detail from an exhibit.

How topology, command output or routing information affects the answer.

How to avoid answering from memory before reading the evidence.

How to map the exhibit back to the exam objective.

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Practice set

Practice scenarios

Question 1hardmultiple choice
Study the full QoS explanation →

Refer to the exhibit. A network engineer applies this JSON-based QoS policy to a Cisco device using NETCONF/YANG. Which statement best describes the expected behavior for traffic from 10.0.0.0/24 with DSCP EF?

Exhibit

Refer to the exhibit.

{
  "policy": {
    "name": "QoS-Policy",
    "match": {
      "dscp": "EF",
      "source_ip": "10.0.0.0/24"
    },
    "action": {
      "set_dscp": "AF41",
      "police": {
        "cir": "100000000",
        "bc": "10000000",
        "conform_action": "transmit",
        "exceed_action": "drop"
      }
    }
  }
}
Question 2hardmultiple choice
Read the full REST/YANG explanation →

Refer to the exhibit. A developer sends a PUT request to the RESTCONF endpoint with the above JSON payload. The device already has interface GigabitEthernet1/0/1 configured with IP address 10.10.10.1/24. What is the expected outcome?

Exhibit

Refer to the exhibit.

{
  "Cisco-IOS-XE-native:interface": {
    "GigabitEthernet": [
      {
        "name": "1/0/1",
        "description": "Link to Core",
        "ip": {
          "address": {
            "primary": {
              "address": "10.10.10.1",
              "mask": "255.255.255.0"
            }
          }
        }
      }
    ]
  }
}
Question 3hardmultiple choice
Read the full VPN explanation →

Refer to the exhibit. A service engineer runs a 'check-sync' action on the NSO service 'vpn1'. The result shows 'out-of-sync' for device 'pe1'. What does this indicate?

Exhibit

Refer to the exhibit.

! NSO configuration snippet
services {
  l3vpn vpn1 {
    endpoint ce1 {
      device [pe1 pe2]
      interface GigabitEthernet0/0/1
      ip-address 10.0.0.1/30
    }
    endpoint ce2 {
      device pe3
      interface GigabitEthernet0/0/2
      ip-address 10.0.0.5/30
    }
  }
}
Question 4mediummultiple choice
Open the full VLAN trunking answer →

Refer to the exhibit. A Python script using RESTCONF sends a GET request to retrieve the interface configuration. The response is shown. What is the VLAN assigned to GigabitEthernet1/0/1?

Exhibit

Refer to the exhibit.

{
  "Cisco-IOS-XE-native:interface": {
    "GigabitEthernet": [
      {
        "name": "1/0/1",
        "description": "Server port",
        "ip": {
          "address": {
            "primary": {
              "address": "192.168.1.1",
              "mask": "255.255.255.0"
            }
          }
        },
        "switchport": {
          "access": {
            "vlan": 10
          },
          "mode": "access"
        }
      }
    ]
  }
}
Question 5hardmultiple choice
Open the full VLAN trunking answer →

During a network migration, an engineer needs to replace a legacy core switch with a new one without disrupting the existing STP topology. The new switch supports RSTP and will be connected via two trunk links. Which configuration should be applied to the new switch to prevent it from becoming the root bridge?

Question 6mediummultiple choice
Study the full Python automation breakdown →

Refer to the exhibit. A Python script uses the Cisco IOS-XE RESTCONF API to retrieve the device configuration. The returned JSON is shown. What must be done to enable the GigabitEthernet0/1 interface using the API?

Exhibit

Refer to the exhibit.
```
{
  "hostname": "Router1",
  "interfaces": [
    {
      "name": "GigabitEthernet0/0",
      "ip": "10.1.1.1",
      "mask": "255.255.255.0",
      "enabled": true
    },
    {
      "name": "GigabitEthernet0/1",
      "ip": "192.168.1.1",
      "mask": "255.255.255.0",
      "enabled": false
    }
  ]
}
```
Question 7hardmultiple choice
Full question →

Refer to the exhibit. A developer is building a Docker image for a Node.js application. The Dockerfile contains: ``` FROM node:14 WORKDIR /usr/src/app COPY package*.json ./ RUN npm install COPY . . CMD ["node", "app.js"] ``` When building, the error shown occurs. What is the most likely cause?

Exhibit

Refer to the exhibit.
```
Error: EACCES: permission denied, mkdir '/usr/src/app/node_modules/.cache'
    at Object.mkdirSync (fs.js:753:3)
    at ...
```
Question 8easymultiple choice
Read the full Ansible explanation →

Refer to the exhibit. An Ansible playbook targeting a Cisco IOS device fails with this error. What is the most likely cause?

Exhibit

Refer to the exhibit.

Error: 'Failed to authenticate to device 192.168.1.100:22'
Question 9mediummultiple choice
Read the full DHCP explanation →

Refer to the exhibit. An automation script expects the interface IP address to be configured via DHCP. Based on the output, what is the current configuration source for the IP address?

Exhibit

Refer to the exhibit.

R1#show run | section interface GigabitEthernet0/1
interface GigabitEthernet0/1
 ip address 192.168.1.1 255.255.255.0
 duplex auto
 speed auto
!
R1#show ip interface GigabitEthernet0/1
GigabitEthernet0/1 is up, line protocol is up
  Internet address is 192.168.1.1/24
  Broadcast address is 255.255.255.255
  Address determined by non-volatile memory
  MTU is 1500 bytes
  Helper address is not set
  Directed broadcast forwarding is disabled
  Outgoing access list is not set
  Inbound  access list is not set
Question 10hardmultiple 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 11easymultiple 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"
        }
      ]
    }
  }
}
Question 12hardmultiple choice
Open the full VLAN trunking answer →

Refer to the exhibit. A switch is configured with the shown trunk port. After connecting the uplink, the switch logs show repeated 'errdisable' state transitions on this port. The core switch is configured with the same allowed VLAN list. Which configuration change is most likely to resolve the issue?

Exhibit

Refer to the exhibit.

"""
interface GigabitEthernet0/1
 description Uplink to Core
 switchport mode trunk
 switchport trunk allowed vlan 10,20,30
 spanning-tree portfast trunk
"""
Question 13easymultiple choice
Full question →

Refer to the exhibit. An engineer applied this configuration to a Cisco switch port connected to an application server. The server runs a critical business application that should not be disrupted. However, after applying the configuration, the port goes into errdisable state. What is the most likely cause?

Exhibit

Refer to the exhibit.
```
interface GigabitEthernet1/0/1
 description CONNECTION TO APP SERVER
 switchport access vlan 10
 switchport mode access
 spanning-tree portfast
 spanning-tree bpduguard enable
```
Question 14mediummultiple choice
Full question →

A network engineer is designing a data center network with leaf-spine topology. The requirement is to minimize latency and maximize bandwidth for east-west traffic. Which type of links should be used between leaf and spine switches?

Question 15mediummultiple choice
Full question →

Refer to the exhibit. A network engineer runs a script that queries the Cisco DNA Center site health API. The response shows Branch1 with a healthScore of 10. What is the most likely action to improve Branch1's health?

Exhibit

Refer to the exhibit.
GET /dna/intent/api/v1/site-health HTTP/1.1
Host: 10.1.1.1
Accept: application/json
X-Auth-Token: <token>

HTTP/1.1 200 OK
Content-Type: application/json

{
  "response": [
    {
      "siteName": "Branch1",
      "healthScore": 10,
      "numberOfClients": 25
    },
    {
      "siteName": "HQ",
      "healthScore": 90,
      "numberOfClients": 150
    }
  ],
  "version": "2.1.1"
}

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