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Network+ test objectives > 2.1 > Flashcards

2.1 Flashcards

1
Q

What is UTP?

A

Unshielded Twisted Pair is the most common twisted pair cabling.

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2
Q

What is STP?

A

Shielded Twisted Pair: Additional shielding around a pair or overall cable protects against interference and requires to be grounded.

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3
Q

How to read twisted cables?

A

(Overall cable) / (individual pairs)TP (U:unshielded, S:Braided shielding, F:Foil shielding)
EX:S/FTP
EX:F/UTP

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4
Q

What is Platenum cable?

A

Plenum cable is a type of cable that is laid in the plenum spaces of buildings and doesn’t give off toxic fumes when it burns.

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5
Q

What is FEP cable?

A

Its a fire-rated cable used just like a low-smoke PVC.

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6
Q

What is PVC?

A

Traditional flexible cable jacket wires but when they burn they produce a lot of smoke.

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7
Q

What is Coax cable used for?

A

Not for long distances, and rather to be used in patches.

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8
Q

What is coax cable?

A

Coaxial cable is a type of cable that has an inner conductor surrounded by an insulating layer, surrounded by a conductive shielding.

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9
Q

What are RJ11 and RJ14 connectors?

A

RJ11 is a 6 position, 2 conductor which in short is called 6P2C. Like the land line phone. RJ14 is a 6P4C for dualy-line use. Both are copper connectors.

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10
Q

Whats RJ45 connector?

A

It’s an 8P8C copper connector.

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11
Q

What does RJ stand for?

A

Registered Jack

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12
Q

What’s a BNC?

A

It’s a coaxial cable connector which is bulky and hard to work with.

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13
Q

What are DB-9 and DB-25?

A

Two of copper D-sub connectors built for modem communications and is used mostly as a configuration port. Numbers stand for the number of pins on the connector.

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14
Q

What is F-type connector?

A

It’s a copper connector used for cable television and cable modem.

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15
Q

What are the differences between Fiber communication and copper?

A

Fiber uses light for transmission, it is very hard to tap, can be used for long distances and its immune to radio interference since there is no RF.

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16
Q

What are Fiber media types?

A
  1. Single-mode

2. Multimode

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17
Q

What are the characteristics of multimode fiber?

A
  1. Used for short range communication.

2. Inexpensive light source

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18
Q

What are the characteristics of single-mode fiber?

A
  1. Used for long-range communication (up to 100 km without processing)
  2. Uses expensive light source like laser beams.
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19
Q

What connectors are used for fiber media to control return loss?

A
  1. UPC

2. APC

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20
Q

What is return loss in fiber?

A

light reflected back to the source.

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21
Q

What do UPC and APC stand for?

A

UPC: Ultra-polished connectors
APC: Angle-polished connectors

22
Q

Whats the difference between APC and UPC?

A

UPC has high return loss while APC lowers the return loss

23
Q

What are some of the common fiber connector?

A
  1. ST
  2. SC
  3. LC
  4. MT-RJ
24
Q

Whats a ST connector?

A

(Straight Tip) uses a bayonet connector.

25
Q

Whats a SC connector?

A

(Subscriber Connector / Standard Connector / Square Connector) uses a simple push-in connector.

26
Q

What kind of fiber optic category are APC, UPC and MTRJ?

A

SC

27
Q

Whats a LC connector?

A

(Lucent Connector / Local Connector / Little Connector) just a little smaller than SC connectors.

28
Q

WHats a MTRJ connector?

A

(Mechanical Transfer Registered Jack / Media Termination-recommended jack)

29
Q

What are T568A and T568B?

A

They are 2 different pin assignments for 8P8C connectors.

30
Q

What are Straight-through cables?

A

(also called patch cables) they are the most common Ethernet cable which connects workstations to network devices.

31
Q

What is an Ethernet cross-over cable?

A

It is used to connect alike devices together (MDI to MDI, MDI-X to MDI-X)

32
Q

Whats auto-MDI-X?

A

It automatically decides to cross-over.

33
Q

Whats a Patch Panel?

A

A Patch Panel connects user devices of an office/group to the networking equipment in the networking room.

34
Q

Whats a 66 block?

A

It’s a wire-to wire patch panel for analog voice which patches the left side to the right side and needs a wire and punch-down tool.

35
Q

Whats 110 block?

A

It’s another wire-to-wire patch panel that replaced 66 block that patches Category 5 and 6 cables.

36
Q

What kind of patch panel are 66 block and 110 block?

A

Copper patch panel

37
Q

Whats a Fiber distribution panel?

A

It’s patch panel for permanent fiber installation which often includes a service loop.

38
Q

What a tranceiver?

A

A device that transmits and receives and provides a modular interface.

39
Q

Whats duplex transmitter?

A

It’s a fiber transceiver that uses two fibers to receive and transmit.

40
Q

What’s a Bi-Directional transceiver?

A

(also called BiDi) It’s a fiber transceiver in which traffic runs in both directions with a single fiber and reduces the number of fiber runs by half.

41
Q

Whats GBIC?

A

(Gigabit Interface Converter) It’s a transceiver most common on Gigabit and fibre channel networks (copper and fiber support) later replaced by SFP.

42
Q

Whats are SFP and SFP+?

A

(Small Form-factor Pluggable) (Enhance SFP) It’s a transceiver that can be used for fiber and Ethernet.

43
Q

What are the differences between SFP and SFP+?

A

Even though SFP+ is the same size as the SFP, it supports 16Gbit/s instead of 1Gbit/s. Also SFP is commonly used for 1Gbit/s fiber but SFP+ is mostly used with 10 Gigabit Ethernet.

44
Q

Whats QSFP/QFSP+?

A

(Quad SFP/SFP+) It’s a 4 channel SFP/SFP+ which means it combined 4 SFPs into a single transceiver and can also be BiDi. EX:
(4channelSFP=4x1Gbit/s=4Gbit/s)

45
Q

Whats the most popular technology and topology?

A

Ethernet.

46
Q

What kind of cabling does the Ethernet use?

A

Traditional used coaxial and the modern Ethernet uses Twisted pair copper or fiber.

47
Q

What are the characteristics of 100BASE-TX?

A

(Also called Fast Ethernet)

  1. Uses Cat 5 or better twisted pair copper wires
  2. Uses only 2 of the pairs inside the cable.
  3. Max distance: 100m
  4. Copper Ethernet
48
Q

What are the characteristics of 1000BASE-T?

A
  1. It runs on Cat5 or better twisted pair cables
  2. Uses all 4 of the pairs in the cable
  3. Copper Ethernet
49
Q

What are the characteristics of 1000BASE-SX?

A
  1. It’s a Gigabit Ethernet usually used over multimode fiber

2. Depending on the fiber type distance range is between 220m to 500m.

50
Q

What are the characteristics of 1000BASE-LX?

A
  1. Another Gigabit Ethernet over fiber.
  2. In multimode fiber goes to 550m
  3. In Single-mode fiber goes to 5 km
51
Q

What are the characteristics of 10GBASE-T?

A
  1. It’s a Copper Ethernet
  2. Cat6: 55m
  3. Cat6A: 100m
  4. Cat7: 100m

Network+ test objectives (29 decks)

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