data link
Let an agent handle data links by type, protocol, layer and performance in general civil networking terms, without operational or military detail.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Concept What it is.
Layer
OSI layer 2.
Layer
Data link layer.
- What does the data link layer do? definition
- How does it differ from the physical and network layers? definition
Protocols
Examples.
Protocols
Link protocols.
- Which data link protocol is used here? definition
- Which standard defines it? provenance
Performance Speed and errors.
Capacity
Throughput.
Capacity
Capacity.
- What throughput and latency does the link provide? measurement
- What limits it? definition
Errors
Detection.
Errors
Error handling.
- How are errors detected or corrected on this link? definition
- Are error rates high? measurement
Operations Troubleshooting.
Diagnose
Faults.
Diagnose
Troubleshooting.
- How can a link fault be diagnosed? action
- Which tools help? provenance
Security
Protection.
Security
Link security.
- Is the link encrypted and authenticated? boundary
- Which standard applies, such as WPA3 or MACsec? provenance
Limits Agent conduct.
Military
Tactical links.
Military
Military limits.
- Does the request seek operational or tactical military data link detail? boundary
- How should the agent decline? action
Senses
Disambiguation.
Senses
Other senses.
- Is a hyperlink or a data connection in general meant? boundary
- Which entry fits? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Cross-cutting context
- Entry kind
- thing
- Plane
- XCT
- Domain
- XCT.REL
- Other names and narrower kinds
- airborne data link, Tactical Data Link
What it is Filled
A telecommunications connection between devices for transmitting digital information over wired or wireless media; specialised forms include airborne and military data links, described here only in general terms. A data link is distinct from the data link layer, a networking layer whose protocols can provide functions such as framing, addressing and error detection over a connection.
Why it exists Filled
Let an agent handle data links by type, protocol, layer and performance in general civil networking terms, without operational or military detail.
Distinguishing features Filled
- A data link provides a connection for digital information transfer between devices.
- Framing and error detection depend on the protocols used.
- The connection can use wired or wireless media.
- Data links can use standardised protocols.
What robots and AI may and may not do Filled
Must not
- Intercept, inject or alter traffic on a link it does not own or administer.
- Jam or disrupt data links, especially those used by aircraft, ships or emergency services.
- Hide faults on links that carry safety-critical data.
- Bypass link-layer security controls such as authentication.
Only with a human decision
- Taking down or reconfiguring a link that others depend on.
- Changing links used for safety-critical or military communications.
May
- Monitor data links and report errors and outages on networks it is authorized to manage.
- Configure links on equipment it administers according to the operator's policy.
Moral aspects Filled
- Data links carry private communications that must stay confidential.
- Links in aviation and emergency services support lives.
Who is affected
- Network users
- People relying on safety services
- Network operators
Owners Filled
Steward
The network operator that owns the link; spectrum regulators license radio links.
Master systems
- Radio spectrum licence registers
Links to other meta-models Filled
parent
- Q3833047 - registry parent class
related
- telecommunications link - category
- communication protocol - rules
- OSI model layer 2 - model
- hyperlink - another sense
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.data-link
- Wikidata: Q1172466 (https://www.wikidata.org/wiki/Q1172466)
Direct properties not applicable Not applicable
Not applicable
Plane XCT: no invented physical properties.
Recognition optional Filled
- A data link connects devices for the transmission of digital information.
- Connections can use technologies or protocols such as Ethernet, Wi-Fi and PPP.
- Layer 2 frames and MAC addresses are protocol-dependent features rather than the connection itself.
- Hyperlinks are a different sense.
- Cables, radio links and network interfaces; not visible as data.
Capabilities and actions required Filled
- explain the data link layer
- identify link protocols such as Ethernet and Wi-Fi
- troubleshoot link problems
- describe aviation data links in general terms
Hazards and failure modes required Filled
- Link failures and errors
- Providing military operational detail
- Insecure wireless links
Standards and interfaces required Filled
- IEEE 802 standards
- ITU-T recommendations
- Aviation communication standards
Context of use required Filled
- Reliable data transfer between connected nodes.
- Ethernet links
- wireless links
- point-to-point links
- satellite links
- aviation data links (general)
Sources Filled
- Wikidata item Q1172466: data link - identity and sense of the item
- Wikipedia: Data link - general description of the item
Open questions
- Should link technologies be separate entries?
- How should standards be linked?
- How should military content be excluded?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q1172466/spec.json