Fiber Optic

Question 1

What are the four main components of a fiber-optic cable?

Answer 1

Core (glass or plastic)

Cladding (keeps signal centered)

Protective layer (prevents breakage)

Plastic sheath (outer protection)

Question 2

List 3 advantages of fiber-optic cabling.

Answer 2

Immune to EMI

Highly resistant to eavesdropping

Fastest transmission rates

Greater cable distances without repeaters

Question 3

List 3 disadvantages of fiber-optic cabling.

Answer 3

Expensive

Difficult to work with

Requires special training to attach connectors

Question 4

What is the core diameter of single-mode fiber?

Answer 4

Around 10 microns

Question 5

What is the core diameter of multi-mode fiber?

Answer 5

Around 50 to 100 microns

Question 6

Which fiber type supports longer distances?

Answer 6

Single-mode fiber

Question 7

Which fiber type uses multiple light rays?

Answer 7

Multi-mode fiber

Question 8

Which fiber type uses a single light ray?

Answer 8

Single-mode fiber

Question 9

What are the four fiber optic connector types?

Answer 9

ST

SC

LC

MT-RJ

Question 10

Describe the ST connector.

Answer 10

Used with single/multi-mode

Keyed, bayonet-style (twist-lock)

Requires polishing

Nickel-plated with ceramic ferrule

Question 11

Describe the SC connector.

Answer 11

Used with single/multi-mode

Push-on/pull-off with locking tab

Requires polishing

Ceramic ferrule

Question 12

Describe the LC connector.

Answer 12

Used with single/multi-mode

Plastic with locking tab (like RJ45)

Half size of other connectors

Ceramic ferrule

Single connector with two ends

Question 13

Describe the MT-RJ connector.

Answer 13

Used with single/multi-mode

Plastic with locking tab

Holds both cables in one end

Uses metal guide pins and ceramic ferrule