IEEE 802.3u
E425715
IEEE 802.3u is the Ethernet standard that defines Fast Ethernet, increasing network speeds to 100 Mbps over twisted-pair and fiber-optic cabling.
All labels observed (1)
| Label | Occurrences |
|---|---|
| IEEE 802.3u canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T4260433 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: IEEE 802.3u Context triple: [Fast Ethernet, alsoKnownAs, IEEE 802.3u]
-
A.
IEEE 802.3ab
IEEE 802.3ab is an Ethernet networking standard that defines 1000BASE-T Gigabit Ethernet over Category 5 (and better) twisted-pair copper cabling.
-
B.
IEEE 802.3j
IEEE 802.3j is an amendment to the IEEE 802.3 Ethernet standard that defines fiber-optic physical layer specifications for 10 Mbps Ethernet.
-
C.
IEEE 802.3z
IEEE 802.3z is a networking standard that defines Gigabit Ethernet over fiber-optic and short-run copper cabling.
-
D.
100BASE‑TX
100BASE‑TX is a Fast Ethernet standard that delivers 100 Mbps data transmission over twisted-pair copper cabling, commonly used in local area networks.
-
E.
IEEE 802.3ck
IEEE 802.3ck is an Ethernet physical layer standard that defines 100G, 200G, and 400G electrical interfaces over copper channels for high-speed data center and networking applications.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: IEEE 802.3u Target entity description: IEEE 802.3u is the Ethernet standard that defines Fast Ethernet, increasing network speeds to 100 Mbps over twisted-pair and fiber-optic cabling.
-
A.
IEEE 802.3ab
IEEE 802.3ab is an Ethernet networking standard that defines 1000BASE-T Gigabit Ethernet over Category 5 (and better) twisted-pair copper cabling.
-
B.
IEEE 802.3j
IEEE 802.3j is an amendment to the IEEE 802.3 Ethernet standard that defines fiber-optic physical layer specifications for 10 Mbps Ethernet.
-
C.
IEEE 802.3z
IEEE 802.3z is a networking standard that defines Gigabit Ethernet over fiber-optic and short-run copper cabling.
-
D.
100BASE‑TX
100BASE‑TX is a Fast Ethernet standard that delivers 100 Mbps data transmission over twisted-pair copper cabling, commonly used in local area networks.
-
E.
IEEE 802.3ck
IEEE 802.3ck is an Ethernet physical layer standard that defines 100G, 200G, and 400G electrical interfaces over copper channels for high-speed data center and networking applications.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Ethernet standard
ⓘ
IEEE 802.3 amendment ⓘ |
| alsoKnownAs | Fast Ethernet standard ⓘ |
| applicationDomain |
campus networks
ⓘ
enterprise LANs ⓘ |
| autoNegotiationStandard |
IEEE 802.3u Clause 28
ⓘ
linked to:
IEEE 802.3 Clause 28
|
| backwardCompatibleWith | 10 Mbit/s Ethernet ⓘ |
| belongsToWorkingGroup | IEEE 802.3 Working Group ⓘ |
| dataRateIncreaseFactor | 10x over 10 Mbit/s Ethernet ⓘ |
| defines | Fast Ethernet ⓘ |
| definesAutoNegotiation | optional auto-negotiation mechanism ⓘ |
| definesLayer |
MAC sublayer of Data Link layer
ⓘ
Physical layer ⓘ |
| definesMaximumSegmentLength |
100 meters for 100BASE-TX
ⓘ
2 kilometers for 100BASE-FX in full-duplex ⓘ 412 meters for 100BASE-FX in half-duplex ⓘ |
| definesMediumType |
100BASE-FX over multimode fiber
ⓘ
100BASE-T4 over four pairs of UTP ⓘ 100BASE-TX over two pairs of UTP ⓘ |
| frameFormat | same MAC frame format as 10 Mbit/s Ethernet ⓘ |
| improvesOver | 10BASE-T ⓘ |
| influenced | development of 1000BASE-T (Gigabit Ethernet over copper) ⓘ |
| maintainsCompatibilityWith |
10BASE-T Ethernet
ⓘ
linked to:
10BASE-T
|
| maximumFrameSize | 1518 bytes without VLAN tagging ⓘ |
| minimumFrameSize | 64 bytes ⓘ |
| organizationDomain | computer networking ⓘ |
| partOf |
IEEE 802.3
ⓘ
linked to:
IEEE 802.3 Ethernet standard
|
| publishedBy | Institute of Electrical and Electronics Engineers ⓘ |
| region | international standard ⓘ |
| standardizes |
100 Mbit/s Ethernet over copper
ⓘ
100 Mbit/s Ethernet over fiber ⓘ |
| standardizesDataRate | 100 Mbit/s ⓘ |
| supportsDuplexMode |
full-duplex
ⓘ
half-duplex ⓘ |
| supportsLANType | wired local area networks ⓘ |
| supportsMedium |
100BASE-FX
ⓘ
100BASE-T4 ⓘ 100BASE-TX ⓘ |
| supportsOperation | CSMA/CD in half-duplex mode ⓘ |
| supportsTopology | star topology ⓘ |
| usesCableCategory | Category 5 UTP for 100BASE-TX ⓘ |
| usesConnectorType | RJ-45 for 100BASE-TX ⓘ |
| usesEncoding |
4B/5B line coding
ⓘ
MLT-3 signaling for 100BASE-TX ⓘ NRZI for 100BASE-FX ⓘ |
| usesPhysicalMedium |
fiber-optic cabling
ⓘ
twisted-pair copper cabling ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: IEEE 802.3u Description of subject: IEEE 802.3u is the Ethernet standard that defines Fast Ethernet, increasing network speeds to 100 Mbps over twisted-pair and fiber-optic cabling.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.