4 august 2015 re meyers, ms.ed., ccai ccna discovery curriculum review networking for home and small...
TRANSCRIPT
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
CCNA Discovery Curriculum ReviewCCNA Discovery Curriculum Review
Networking for Home and Small BusinessesNetworking for Home and Small Businesses
Chapter 4:Chapter 4:
Connecting to the Internet Through an ISP
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
DisclaimerDisclaimer
This review is not a comprehensive learning model of the curriculum!It is intended for chapter pre-exam prep, or post exam
review.Using this presentation as your sole source of teaching or
learning will not provide all the information you need to be successful in the Cisco Networking Academy.
All materials, images, text, and content unless noted remains the licensed property of the Cisco Networking Academy.
Please report all errors as soon as possible to:[email protected]
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
ObjectivesObjectives
Explain “what is the Internet?” and how we connect to the Internet using an ISP
Explain how information is sent across the Internet through an ISP.
Describe and identify the components of an ISP Network Operations Center.
Identify the different types of cables and connectors for connecting the devices in a Network Operations Center.
Construct and terminate twisted pair cables and determine type of cable needed
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
ICG: Section 4.1ICG: Section 4.1
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
The Internet and How We Connect to It The Internet and How We Connect to It 4.1.14.1.1
The Internet is a network of networks that connects users in every country in the world. There are currently over one billion Internet users
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
The Internet and How We Connect to It The Internet and How We Connect to It 4.1.34.1.3
An ISP is a company that provides the connections and support to access the Internet.Point of Presence (POP) is the connection point
between the ISP's network to a local LAN
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
The Internet and How We Connect to It The Internet and How We Connect to It 4.1.34.1.3
Internet Backbone Very high-speed data links that interconnect ISP POPs
and ISPs to each other. These interconnections are part of the very large, high
capacity network
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
The Internet and How We Connect to ItThe Internet and How We Connect to It
Integrated Services RouterRouter, switch, wireless access point in one package
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
The Internet and How We Connect to It The Internet and How We Connect to It 4.1.44.1.4
ISP ServicesHome Service - slower connection speed, reduced web
space storage, and fewer email accounts.Business Class Service - more expensive, provides
faster connection speeds, additional web space, and additional e-mail accounts
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
The Internet and How We Connect to It The Internet and How We Connect to It 4.1.54.1.5
Asymmetric:Most commonly used for the
home.Download speeds are faster than
upload speeds.
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
ISP Levels of ServiceISP Levels of Service
Symmetric:Commonly used for business
or individuals hosting servers on the Internet.
It can carry large amounts of data in both directions at equal rates.
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
ICG: Section 4.2ICG: Section 4.2
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Sending Information Across the Internet Sending Information Across the Internet 4.2.14.2.1
For hosts to communicate on the Internet, they must be running Internet Protocol (IP) softwareNetwork connection (wired or wireless)IP AddressISP connectivity
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Sending Information Across the InternetSending Information Across the Internet
The IP PacketHas a header at the beginning containing the source and
destination IP addresses.Also contains control information that describes the
packet to network devices, such as routers
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Sending Information Across the Internet Sending Information Across the Internet 4.2.34.2.3
HOPEach router a packet travels through from source
to destination.
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Sending Information Across the Internet Sending Information Across the Internet 4.2.34.2.3
Traceroute Traces the route from source to destination. Displays each hop along the way and the time it takes for
each one
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
ICG: Section 4.3ICG: Section 4.3
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Sending Information Across the InternetSending Information Across the Internet
Internet cloudUsed to represent the Internet or any other complex
network, without showing the details of the connections.
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Sending Information Across the Internet Sending Information Across the Internet 4.3.24.3.2
Routers are not the only devices found in the Internet cloud
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Networking Devices in a NOCNetworking Devices in a NOC
Physical requirements of a home network versus an ISP
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
ICG: Section 4.4ICG: Section 4.4
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Networking Devices in a NOC Networking Devices in a NOC 4.4.14.4.1
There are two kinds of physical cableMetal (copper) using electrical signalsFiber using light signals.
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Networking Devices in a NOC Networking Devices in a NOC 4.4.1 - 24.4.1 - 2
Twisted PairUTP most common in
homes and schoolsAll Categories of data
grade UTP cable are terminated into an RJ-45 connector.
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Networking Devices in a NOC Networking Devices in a NOC 4.4.1 - 24.4.1 - 2
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Types of Cables and Connectors Used in NetworkingTypes of Cables and Connectors Used in Networking
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
ICG: Section 4.5ICG: Section 4.5
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Working with Twisted Pair Cabling Working with Twisted Pair Cabling 4.5.14.5.1
Cabling standards ensure reliable data transmissionsCable lengthsConnector typesPinouts
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Working with Twisted Pair Cabling Working with Twisted Pair Cabling 4.5.24.5.2
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Working with Twisted Pair Cabling Working with Twisted Pair Cabling 4.5.2,34.5.2,3
UTP Terminations
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Working with Twisted Pair Cabling Working with Twisted Pair Cabling 4.5.34.5.3
Patch panels and cables allow quick rearrangement of network connections
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Construct and Terminate Twisted Pair CablesConstruct and Terminate Twisted Pair Cables
Common Cable testing devices
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Working with Twisted Pair Cabling Working with Twisted Pair Cabling 4.5.3,64.5.3,6
UTP signal degradation cause by cable distance, low quality cables, and poor terminations.
Attenuation – drop in signal strength over distanceCrosstalk – adjacent wire noise
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
Working with Twisted Pair Cabling Working with Twisted Pair Cabling 4.5.4,64.5.4,6
Cable managementPrevents cable damageIsolates problems
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April 19, 2023 RE Meyers, Ms.Ed., CCAI
SummarySummary
The Internet is a worldwide collection of computer networks, accessed through ISPs.
Internet Protocol (IP) controls the structure and addressing of data packets for transport through the Internet cloud.
ISP Network Operations Centers (NOCs) utilize high-end, high-speed devices with redundancy.
Home networks feature multi-function devices which perform switching and routing.
Networks use physical cabling media which must conform to standards in construction and termination.
Cabling best practices are designed to reduce attenuation and crosstalk.
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April 19, 2023 RE Meyers, Ms.Ed., CCAI