Internet Service Providers 220-1001

Networking Concepts 220-1001

by Lisa Shea

​Internet Connections

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Businesses and homes depend on Internet access.

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Created by telecommunications companies and academic institutions.

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​Customer Connect Via a Point of Presence (POP). The ISP uses a backhaul link to connect each POP to their core network infrastructure.

Poll

The ISP uses a ___________ link to connect each POP to their core network infrastructure.

• Front End

• Local Loop

• Backhaul

• Last Mile

​Broadband Internet

• ​An "always on" connection.

• ​DSL uses high frequencies in a digital phone line.

• ​A filter separates DSL signal from voice traffic.

• ​DSL modem connects to a phone system (router/modem/ap).

• ​Phone line connects to the modem.

• ​If you see PPP over ATM or PPPoE it is referring to DSL.

Multiple Choice

What must be placed between the phone wall jack and the DSL modem to separate DSL signal from voice traffic?

• Access point

• Defibrillator

• Ethernet

• A Filter

​Fiber Optic Internet Access

• ​Higher Bandwidth, longer distance than copper.

• ​Telecommunication networks use fiber.

• ​Fiber to the home (FTTH) is becoming more common.

• ​Cable TV and Teleco0m providers can both offer fiber connection.

• ​Hybrid Fiber Coax (broadband cable) - Fiber core with coax to the customer.

• ​Cable modems are DOCSIS compliant: 38 Mbps originally.

• ​DOCSIS v3 allows multiplexed channels for higher bandwidth.

​Dial-Up Internet Access

• ​Uses plain old telephone lines (POTS)

• ​Not a different frequency like DSL.

• ​Line cannot be used for voice at the same time.

• ​Low Data transfer rates of 56 Kbps.

Multiple Choice

What is a main disadvantage of Dial up Internet?

• The line has static

• Slowness

• Fast speed

• Compression

​Remote and Rural Solutions

• ​Wired broadband may not be available.

  • ​Too far from provider.

  • ​Older buildings where wiring is not possible.

• ​Two options:

  • ​Satellite - Large coverage area, dish at customer aligned to ISP.

• ​Line of Sight (LOS) wireless internet service provider (WISP).

  • ​Line of site is two antennas with no obstructions between them.

  • ​Range of frequencies may be affected by 5G cell service.

Multiple Choice

A SOHO's connection to the internet through an antenna that sends and receives a microwave signal to the ISP's antenna. There can be no obstacles on the direct path between the two antennae. What type of connection is this?

• Fiber

• DSL

• Line-of site wireless

• Satellite

Multiple Choice

A healthcare organization provides mobile clinics throughout the world and needs to transfer patients' statistical data to a central database via the internet. Which network technology should you select to ensure network connectivity for any clinic located anywhere in the world, even remote areas?

• Satellite

• Cable modem

• ISDN

• DSL

​Cellular Radio Networks

• ​Wi-Fi bands have restricted range ~5 miles.

• ​Used by some IOT devices.

• ​Cellular radios operate in the 850 to 900 MHz frequency band in US.

• ​Transmitter connects cell phone to landline or mobile networks.

• ​Cellular radio wireless networking allows long range communications over smart devices.

Multiple Choice

What type cellular service uses a SIM card?

• CDMA

• GSM

• 4G

• 5G

Multiple Choice

Which of the following types of internet connection services can allow you to be truly mobile while maintaining your internet connection?

• Wi-Fi

• Satellite

• Mobile Hotspot

• Cellular