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CompTIA A+ > Chapter 18: Essentials of Networking > Flashcards

Chapter 18: Essentials of Networking Flashcards

1
Q

Host Types

A

Local Host - the machine you are working on
Remote Host - any other machine on the network

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2
Q

2 types of platforms for Servers to run

A

1) Apache HTTP
2) Microsoft Internet Information Services (IIS)

Used to store files, can have specific functions like:

File server, mail server, video server, print server, etc

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3
Q

Client

A

A device that requests things from a remote host/server

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4
Q

Resource

A

Things shared across a network

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5
Q

3 Requirements for a Network

A

1) Defined and Standardized cabling, network cards, host connections
2) Addressing method for communication
3) Data sharing method

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6
Q

NIC

A

Network Interface Controllers, define and label the machines on the network

Also breaks files into “frames” for transmission

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7
Q

MAC

A

Media Access Control

Unique identifier, binary number but represented with a hexcode that uses 0-9, A-F

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8
Q

Frame components

A

Destination MAC, Source MAC, CRC (Cyclic Redundancy Check), Data

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9
Q

Ethernet Types/Speeds

A

10BASE-T: 10Mbps
100BASE-T: 100mbps
10000BASE-T: 1 Gbps (1000 Mbps)
10GBASE-t: 10 Gbps

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10
Q

Star Bus Topology

A

Central switch with hosts connected (hybrid topology)

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11
Q

Bus vs Switch

A

Bus is older tech, simple repeater, sends signal to all devices that are connect

Switch is smart, uses MAC to only send signals to desired destinations

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12
Q

Bandwidth (Hub vs Switch)

A

Hubs make devices all share the bandwidth, Switches give each device full bandwidth

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13
Q

Segment

A

Connection between a device and switch, max 100 m

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14
Q

UTP

A

Unshielded Twisted Pair - type of cable typically used in networking

uses pairs of cables
22-26 gauge copper
color coded
each individually wrapped while also in a sheath

Used in 100/1000BASE-T & 10GBASE-T Networks

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15
Q

CAT categories

A

CAT 1 - Phone cable, 4 pins
CAT 3 - 10Mbps ethernet
CAT 5 - 100Mbps ethernet
CAT 5e - 1Gbps; 2.5 Gbps @ 100m seg
CAT 6 - 10Gbps @ 55m seg
CAT 6a - 10Gbps @ 100m seg
CAT 6e - Means CAT 6 and CAT 6a

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16
Q

STP

A

Shielded Twisted Pair

Ethernet cabling that is shielded to prevent electromagnetic interference (EMI)

Works for direct burial, contexts with a lot of electrical noise (floor with tons of lights and equipment)

17
Q

Plenum

A

Intermediate spaces (ceilings, walls, floor) where cabling is run.

Requires special cable coating (NOT PVC) to protect against overheating, overheating PVC will spread toxic gas

18
Q

Jack types

A

RJ11 - telephone jack (supports 2 pairs of wires)
RJ45 - UTP (supports 4 pairs), wider than RJ11

19
Q

Jack Standards

A

T568A and T568B

20
Q

T568A Color Scheme

A

Pin -Color
1-W/G
2-G
3-W/O
4-Bl
5-W/Bl
6-O
7-W/Br
8-Br

21
Q
A
22
Q

Fiber Cables

A

Immune to electrical issues

62.5/125 gauge

2 strands of fiber (input/output)

Uses lasers

Require a fiber optic switch and a fiber network card

23
Q

Distance of Fiber

A

2,000 m distance

24
Q

2 types of fiber cables are?

A

Multi-Mode (LED): bounces all over cable, dissipates, shorter distances

Single-Mode (laser): fast and direct

25
Q

Types of Fiber Jacks

A

Straight Tip (ST)
Subscriber (Square shape) (SC)
Lucent (2 prong) (LC)

26
Q

Half-duplex

A

Type of data flow for fiber - means data flows in one direction

ST and SC connections therefore needed 2 cables per connection
Lucent doesn’t

27
Q

Coax

A

Shielded core, rated by impedence

75 ohms

RG-59 (thinner, less bandwidth) and RG-6

Use F-type connector

28
Q

Broadcast Domain

A

Group of computers connected by switches

29
Q

Ethernet over Power

A

Uses electrical system to send connectivity

30
Q

Structured Cabling

A

Allows for safety, organization, and flexibility for growth

1) Telecom Room (central cable location, switches/hubs/patch panels/racks)
2) Horizontal Cabling (runs in plenum)
3) Work Area (where the hosts are)

31
Q

Solid Core vs Stranded Core

A

Solid is brittle, but better conducting - good for runs

Stranded is flexible, but weaker conducting - good for patching

32
Q

Equipment Rack Facts

A

Racks are all 19” wide

RU is Rack Unit, height measurement for components

1RU = 1.75”
2RU = 3.5”
4RU=7”

33
Q

Patch Panels

A

Attach solid runs at the back, RJ45 ports at front (may also have other ports, like optical)

Allows solid core cable to be permanent, but still provides flexibility for changes

Attaches using Punch Down block

Will have a Cat rating, make sure they match

34
Q

ANSI/TIA 606

A

Port labeling methodology

35
Q

Steps for Crimping

A

1) Cut cable
2) Strip .5”
3) Wire into ports (follow 568A or B)
4) Insert crimp and press down
5) Secure the boot
6) Test the cable

36
Q

WAN

A

Wide Area Network
Devices or LANs connected with routers

37
Q
A

CompTIA A+ (11 decks)

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