GSEC · Question #356
You work as a Network Administrator for Perfect World Inc. You are configuring a network that will include 1000BaseT network interface cards in servers and client computers. What is the maximum…
The correct answer is A. 100 meters. 1000BaseT (Gigabit Ethernet over twisted-pair copper cabling) follows the standard Ethernet twisted-pair segment length limit of 100 meters. This applies to Cat5e or Cat6 cabling under IEEE 802.3ab.
Question
You work as a Network Administrator for Perfect World Inc. You are configuring a network that will include 1000BaseT network interface cards in servers and client computers. What is the maximum segment length that a 1000BaseT network supports?
Options
- A100 meters
- B480 meters
- C1000 meters
- D10 meters
How the community answered
(29 responses)- A76% (22)
- B7% (2)
- C3% (1)
- D14% (4)
Why each option
1000BaseT (Gigabit Ethernet over twisted-pair copper cabling) follows the standard Ethernet twisted-pair segment length limit of 100 meters. This applies to Cat5e or Cat6 cabling under IEEE 802.3ab.
The IEEE 802.3ab standard defines 1000BaseT as Gigabit Ethernet over Category 5e or better unshielded twisted-pair cabling with a maximum segment length of 100 meters. This 100-meter limit is consistent with all twisted-pair Ethernet standards (10BaseT, 100BaseTX, 1000BaseT) and is enforced to maintain signal integrity and timing requirements.
480 meters is not a valid maximum segment length for any standard Ethernet twisted-pair specification.
1000 meters is associated with fiber-optic Ethernet standards such as 1000BaseLX, not copper twisted-pair 1000BaseT.
10 meters has no basis in 1000BaseT specifications and would be an impractically short segment length for a campus or enterprise network.
Concept tested: 1000BaseT maximum segment length per IEEE 802.3ab
Source: https://standards.ieee.org/ieee/802.3ab/1156/
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