1.3 Summarize the types of cables and connectors and explain which is the appropriate type for a solution.

Question 1

A technician finishes running fiber optic cable across a large building to expand the internal network. The fiber connects to equipment in a rack with extremely limited space for a connector. Considering the situation and the types of available fiber connectors, which one will accomplish connectivity?

APC
UPC
LC
SC

Answer 1

A local connector (LC) is a small form factor version of the SC push-pull fiber optic connector. It is available in simplex and duplex versions. SFP+ use the LC form factor but run at speeds of 10Gb.

A subscriber connector (SC) is a push/pull connector used with fiber optic cabling.

Angled physical contact (APC) faces are angled for a tighter connection than other fiber connectors. These connectors are usually deployed when the fiber is being used to carry analog signaling, as in cable access TV (CATV) networks.

The ultra physical contact (UPC) fiber connector defines that the cable and connector are polished to the highest standard (a higher standard than with PC).

Question 2

An engineer is installing a new connection between two database stacks. The engineer is using copper cable and needs a connection speed of 40GbE with a distance of about 12 feet. Which medium should the engineer utilize for this link?

Unselected

Coaxial

10BASE-T

Twinaxial

10GBASE-LR

Answer 2

Twinax is for data center 10 GbE (unofficially referred to as 10GBASE-CR) and 40 GbE (40GBASE-CR4) interconnections of up to about 5 meters for passive cable types and 10 meters for active cable types.

Coaxial/RG-6 is an 18 AWG cable with 75-ohm impedance typically used as drop cable for Cable Access TV (CATV) and broadband cable modems.

A 10GBASE-LR is rated for 10 km operation over single mode fiber.

Ethernet over Fiber uses the IEEE 802.3 10GBASE-LR and 10GBASE-ER specifications.

A 10BASE-T denotes an early implementation that works at 10 Mbps (10), uses a baseband signal (BASE), and runs over twisted pair copper cabling (-T).

Question 3

CAT3(ETHERNET)

Answer 3

10BASE-T
10 Mbps
100 meters/300 feet

Question 4

CAT5(Fast Ethernet)

Answer 4

100BASE-TX
100 Mbps
100 meters/300 feet

Question 5

CAT5e(Gigabit Ethernet)

Answer 5

1000BASE-T
1000 Mbps (1 Gbps)
100 meters/300 feet

Question 6

CAT6

Answer 6

1000BASE-T /10GBASE-T
1000 Mbps(1Gbs) /10 Gbps
100 meters /55 meters

Question 7

CAT 6a

Answer 7

10GBASE-T
10 Gbps
100 meters

Question 8

CAT7

Answer 8

10GBASE-T
10 Gbps
100 meters

Question 9

CAT8

Answer 9

40GBASE-T
40 Gbps
30 meters