A network engineer prepares a script to configure a loopback interface with IP address 172.16.15.12/32. To comply with the company security policies, 'Content-type': 'application/yang- data+json' is added to the script. Connection to the network devices must be secured. Which code snippet must the network engineer use to meet this requirement? A. B. C. D.

Question

Accepted Answer

D. "ietf-interfaces:interface": {
  "name": "Loopback0",
  "type": "iana-if-type:softwareLoopback",
  "enabled": true,
  "address_ipv4": {
    "ip": "172.16.15.12",
    "netmask": "255.255.255.255"
  },
  "ietf-ip:ipv6": { }
} This snippet correctly uses the `ietf-interfaces:interface` container and sets the interface name, type, and enabled status. Crucially, for IPv4, it uses `address_ipv4` as a single JSON object (not an array) to define the IP address and specifies the `netmask` as `255.255.255.255`, which correctly represents a /32 subnet as required by the `ietf-ip` YANG module for IPv4 interface configuration. The `ietf-ip:ipv6` container is correctly included as an empty object for IPv6 configuration.

Answer

A. "ietf-interfaces:interface": {
  "name": "Loopback0",
  "type": "iana-if-type:softwareLoopback",
  "enabled": true,
  "address_ipv4": [
    {
      "ip": "172.16.15.12",
      "netmask": "255.255.255.255"
    }
  ],
  "address_ipv6": [null]
} The `address_ipv4` is defined as an array `[...]` containing an object, which is not the standard or most common representation in `ietf-ip` for a single IPv4 address on an interface; it should typically be a single object. Also, `address_ipv6` is an array containing `null`, which is an unconventional and potentially incorrect way to indicate no IPv6 address.

Answer

B. "interface": "ietf-loopback" {
  "name": "Loopback0",
  "enabled": true,
  "address": "ipv4"
  [
    {
      "ip": "172.16.15.12",
      "netmask": "255.255.255.255"
    }
  ],
  "address_ipv6": { }
} The root element `interface` without a namespace and `ietf-loopback` as a separate key are syntactically incorrect for standard YANG-to-JSON mapping. The `address` key with 'ipv4' and an array `[...]` is also non-standard.

Answer

C. "ietf-interfaces:interface": {
  "name": "Loopback0",
  "type": "iana-if-type:softwareLoopback",
  "enabled": true,
  "address_ipv4": [
    {
      "ip": "172.16.15.12",
      "netmask": "0.0.0.0"
    }
  ],
  "address_ipv6": { }
} The `netmask` `0.0.0.0` is incorrect for a `/32` IP address; a `/32` netmask is `255.255.255.255`. Using `0.0.0.0` would imply a default route or a different subnet.

A network engineer prepares a script to configure a loopback interface with IP address 172.16.15.12/32. To comply with the company security policies, 'Content-type': 'application/yang- data+json' is a

Question

Options

How the community answered

Why each option

Topics

Community Discussion