1.5 Ethernet Standards

Question 1

What is the most common wired networking technology used today?

Answer 1

Ethernet is the most widely used standard for wired networking.

Transcript: “Ethernet is the most popular networking standard in the world.” (0:07–0:10)

Question 2

Who develops and maintains Ethernet standards?

Answer 2

The IEEE 802.3 committee is responsible for Ethernet standards.

• All types and standards of Ethernet
• Copper and fiber

Transcript: “Those standards are created by the IEEE 802.3 committee.” (0:47–0:54)

Question 3

What type of cabling does 1000BASE-T use and what is its speed?

Answer 3

1000BASE-T uses twisted-pair copper cabling and operates at 1 Gbps.

Transcript: “1000BASE-T… twisted-pair copper cabling… speed of 1 gigabit per second.” (1:08–1:17)

Question 4

What is 10GBASE-T and how does it compare to 1000BASE-T?

Answer 4

10GBASE-T is a 10 Gbps Ethernet standard that also uses twisted-pair copper.

Transcript: “10GBASE-T… twisted-pair copper cabling… 10 gigabits per second.” (1:19–1:27)

Question 5

What type of media does 1000BASE-SX use and what is its speed?

Answer 5

It uses fiber optics and operates at 1 Gbps.

Transcript: “1000BASE-SX… uses fiber optics… 1 gigabit per second.” (1:34–1:40)

Question 6

How can you interpret the speed from an Ethernet standard name like 1000BASE-T?

Answer 6

The number (e.g., 1000) usually indicates the speed in megabits per second.

• 1000 is commonly 1,000 megabits per second (or one gigabit/sec)
• 10G would be 10 gigabits per second

Transcript: “1000 refers to the 1,000 megabits per second…” (2:25–2:33)

Question 7

What does the “BASE” in Ethernet standard names signify?

Answer 7

“BASE” refers to baseband signaling, meaning a single frequency is used.

• Broadband uses many frequencies, sharing the medium

Transcript: “BASE… referring to… baseband… single frequency…” (2:44–2:50)

Question 8

How can the letters at the end of an Ethernet standard help identify the media type?

Answer 8

‘T’ usually means twisted-pair, ‘F’ can mean fiber, and ‘SX’ may indicate short-range fiber.

Transcript: “T… twisted-pair copper… F… fiber optics… SX… short wavelength…” (3:08–3:34)

Question 9

Can you always determine the full capabilities of an Ethernet standard by its name?

Answer 9

No. You must read the full IEEE standard to understand all technical details.

Transcript: “If you were interested in the details… you would need to read the entire standard…” (3:45–3:52)