What is the default SNMP permission level on Junos devices?

'read' is often used interchangeably with 'read-only' in general networking, but in Junos, the specific keyword for default read access is `read-only`.

`read-write` access allows both viewing and modifying device configuration or state via SNMP, which is not the default for security reasons.

By default, when an SNMP community string is configured on a Junos device without explicitly specifying a permission level, it is assigned `read-only` access. This security-conscious default prevents unauthorized write operations to the device's configuration or state via SNMP.

`write` access alone is not a standard SNMP permission level and is less granular than `read-write`.