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A+ Certification > 901-2 > Flashcards

901-2 Flashcards

1
Q

What is fiber cable

A

containing one or more optical fibers that are used to carry light.

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2
Q

What is a ST fiber connector

A

It has a bayonet mount and a long cylindrical 2.5 mm ceramic (usually) or polymer ferrule to hold the fiber.

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3
Q

What is a SC fiber connector

A

SC is a snap-in connector also with a 2.5 mm ferrule that is widely used for it’s excellent performance. It was the connector standardized in TIA-568-A, but was not widely used at first because it was twice as expensive as a ST.

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4
Q

What is a LC fiber connector

A

small form factor connector that uses a 1.25 mm ferrule, half the size of the SC.

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5
Q

What is RJ-11

A

A telephone interface that uses a cable of twisted wire pairs and a modular jack with two, four or six contacts. . Can hold six wires for up to three telephone lines

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6
Q

What is RJ-45

A

A common data networking interface that employs a cable of twisted wire pairs and an 8-pin modular jack.

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7
Q

What is the order of T568a

A

g | G | o | B | b | O | br | Br

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8
Q

What is the order of T568b

A

o | O | g | B | b | G | br | Br

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9
Q

What is a BNC connector

A

miniature quick connect/disconnect radio frequency connector used for coaxial cable. It features two bayonet lugs on the female connector; mating is fully achieved with a quarter turn of the coupling nut.

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10
Q

What is a F-connector

A

commonly used for “over the air” terrestrial television, cable television and universally for satellite television and cable modems

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11
Q

What are the characteristics of Single Mode fiber

A

commonly used for “over the air” terrestrial television, cable television and universally for satellite television and cable modems. single-mode fibers can have a higher bandwidth and longer distances

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12
Q

What are the characteristics of Multi-Mode Fiber

A

mostly used for communication over short distances, such as within a building or on a campus. Typical multi-mode links have data rates of 10 Mbit/s to 10 Gbit/s over link lengths of up to 600 meters (2000 feet).

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13
Q

What is STP

A

Sheilded Twisted Pair, protects industrial settings with high amounts of electromagnetic interference

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14
Q

What is UTP

A

Unshielded Twisted Pair, common cables

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15
Q

What are the characteristics of CAT3

A

carry data speeds of up to 10 megabits per second (mbps), used for longer runs, up to 300 feet (100 meters)

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16
Q

What are the characteristics of CAT5

A

can handle 10/100 Mbps speeds (Fast Ethernet) at up to 100 MHz bandwidth

17
Q

What are the characteristics of CAT5e

A

better at keeping signals on different circuits or channels from interfering with each other. A step above Cat 5, it can handle 1000 Mbps speeds (gigabit Ethernet) at 100 MHz.

18
Q

What are the characteristics of CAT6

A

up to 10 gigabit Ethernet at 250 MHz

19
Q

Why use plenum cables

A

To reduce fire hazard when running cable in walls and ceilings. It is jacketed with a fire-retardant plastic jacket

20
Q

What is the difference between a splitter, hub, and switch

A 
SPLITTER = Splitter will use 1 incoming to 2 outgoing or vice versa., no additional power required, 200 MB/s limit
HUBS = hubs repeat all of the network traffic that is sent to them. hogs bandwidth, slowing down the network
SWITCH = most expensive of the three, able to figure out which devices are trying to connect to each other and connect just those two
21
Q

What is the purpose of a coaxial cable

A

used for carrying lower-frequency signals, in that the dimensions of the cable are controlled to give a precise, constant conductor spacing, which is needed for it to function efficiently as a transmission line.

22
Q

What are disadvantages of coaxial cable

A

More expensive, and harder to work with

23
Q

What is IPv4

A

A connectionless protocol for use on packet-switched networks. It operates on a best effort delivery model, in that it does not guarantee delivery, nor does it assure proper sequencing or avoidance of duplicate delivery. These aspects, including data integrity, are addressed by an upper layer transport protocol, such as the Transmission Control Protocol (TCP).
- 32-bit addresses

24
Q

What is IPv6

A

Closely adhering to the design principles in IPv4
simplifies processing of packets in routers by placing the responsibility for packet fragmentation into the end points.
- Length of an IPv6 address is 128 bits

25
Q

What is the range of Class A IPv4?

A

0.0.0.0 to 127.255.255.255

26
Q

What is the range of Class B IPv4

A

128.0.0.0 to 191.255.255.255

27
Q

What is the range of Class C IPv4

A

192.0.0.0 to 223.255.255.255

28
Q

What is the range of Class D IPv4

A

224.0.0.0 to 239.255.255.255

A+ Certification (15 decks)

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