====== 4.2.1.4 Network Platforms ======
[[dido:public:ra:1.4_req:1_func:platform| Return to Platforms ]]

A DIDO, by definition, is a collection of [[dido:public:ra:xapend:xapend.a_glossary:n:netnode | networked nodes]]. Traditionally, the network is assumed to be [[dido:public:ra:xapend:xapend.a_glossary:e:ethernet]] with nodes connected over [[dido:public:ra:xapend:xapend.a_glossary:l:lan]] and/or a [[dido:public:ra:xapend:xapend.a_glossary:w:wan]] using a [[dido:public:ra:xapend:xapend.a_glossary:n:netdev]].

The connections can either be:
  * [[dido:public:ra:xapend:xapend.a_glossary:w:wired]] using \\
    • [[dido:public:ra:xapend:xapend.a_glossary:n:netcabling]] \\
    • [[dido:public:ra:xapend:xapend.a_glossary:u:usb]]
  * [[dido:public:ra:xapend:xapend.a_glossary:w:wireless]] using [[dido:public:ra:xapend:xapend.a_glossary:w:wifi]]

**Note:** for Private, permissioned DIDOs, there may be explicit bans on wireless or even USB connections.

However, there is a lot of growth and development using other wireless connections other than Ethernet or USB. For example: 

  * [[dido:public:ra:xapend:xapend.a_glossary:b:bluetooth]]
  * [[dido:public:ra:xapend:xapend.a_glossary:z:zigbee]]
  * [[dido:public:ra:xapend:xapend.a_glossary:n:nfc]]

Consequently, it is important to identify the kinds of connections that are required to support the DIDO. Some examples are:
 
  * Many contactless payments systems use [[dido:public:ra:xapend:xapend.a_glossary:r:rfid]] and NFC
  * Many supply chains use RFID
  * Many smart home efforts use WiFi and zigbee
  * Many automobiles use Bluetooth to connect phones, make queries, play music, etc.

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