Characteristics of communication links Skills: none IT concepts: data transmission rate, latency, jitter, packet loss, medium This work is licensed under.

Slides:



Advertisements
Similar presentations
Fundamentals of Computer Networks ECE 478/578
Advertisements

Chapter 5 Networks. Learning Objectives After reading this chapter the reader should be able to: Understand the importance of networks in the field of.
Skills: none Concepts: mobile, home and organization connectivity, local versus wide area network, wired versus wireless, cell versus WiFi, terrestrial.
Getting on the Internet
Satellite connectivity Skills: none IT concepts: geostationary orbit, low-earth orbit, satellite footprint, applications, latency (ping time) This work.
Connection characteristics Skills: none IT concepts: wired and wireless connections, connection technologies, connection length and speed, units of measure.
Skills: none Concepts: Link characteristics -- technology, length, speed, latency, jitter and packet loss rate, units of measure for amount of data and.
Skills: none Concepts: host, TCP/IP communication software, TCP/IP layers, TCP/IP functions, TCP/IP protocols This work is licensed under a Creative Commons.
Skills: none Concepts: the quantity of data as measured in bits or bytes, prefixes for large numbers, abbreviation conventions, data ≠ information This.
Skills: none Concepts: local area network, router, inter network, the TCP/IP layered software “stack”, layer functions, layer protocols, dumb versus smart.
Skills: use ping Concepts: network transit time, command-line user interface vs. graphical user interface, prefixes for small quantities This work is licensed.
Skills: none Concepts: LAN, data link functions – moving data within a LAN and medium access, data link protocols – Ethernet and WiFi, why protocols standards.
Encoding images Skills: none IT concepts: an image representation code, the number of bits in a code, the amount of information in an image This work is.
The data link layer Skills: none IT concepts: LAN, medium access, Ethernet and WiFi protocols, why standards win This work is licensed under a Creative.
Audio recording Skills: microphone position and adjustment IT concepts: clipping, dynamic range This work is licensed under a Creative Commons Attribution-Noncommercial-
Cellular connectivity Skills: none IT concepts: cellular generations and their characteristics, speed and coverage variation This work is licensed under.
Audacity setup, installing the LAME MP3 encoder Skills: configure Audacity IT concepts: none This work is licensed under a Creative Commons Attribution-Noncommercial-
Creating a Blogger blog Skills: creating a blog IT concepts: none This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike.
Mobile and portable connectivity Skills: none IT concepts: mobile vs portable connectivity, connectivity options (WiFi, cellular and satellite), characteristics.
TCP/IP: the transport layer Skills: none IT concepts: layered protocols, transport layer functions, TCP and UDP protocols, isochronous applications This.
TCP/IP summary Skills: none IT concepts: review This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License.
An image processing session Skills: change view (zoom in or out), rotate, select a portion, crop, resize, change contrast, filter, compress IT concepts:
The TCP/IP communication layer stack Skills: none IT concepts: protocol layers, TCP/IP, OSI This work is licensed under a Creative Commons Attribution-Noncommercial-
Including images with the img tag Skills: using the img tag IT concepts: none This work is licensed under a Creative Commons Attribution-Noncommercial-
Home connectivity Skills: none IT concepts: local area network (LAN), LAN connectivity options, home-to-Internet connectivity options, wired and wireless.
Information loss in compression Skills: none IT concepts: lossy and lossless compression This work is licensed under a Creative Commons Attribution-Noncommercial-
Ping and traceroute demonstration Skills: Use Ping and Traceroute and Query the Whois database IT concepts: network transit time, router hops, IP registration.
We are going to learn about Internet connectivity, starting with connectivity in the home. (We will cover mobile, organization and backbone connectivity.
Organization connectivity Skills: none IT concepts: structure within an organization LAN, options for connection to the Internet This work is licensed.
Internet backbones today Skills: none IT concepts: good news (expanding rapidly, performance improving), bad news (uneven global capacity) This work is.
1 Pertemuan 4 Networking Fundamentals Matakuliah: M0284/Teknologi & Infrastruktur E-Business Tahun: 2005 Versi: >
NSFNet, the first Internet backbone Skills: none IT concepts: backbone network, history of networking This work is licensed under a Creative Commons Attribution-Noncommercial-
WiFi connectivity Skills: none IT concepts: LAN versus public coverage, WiFi evolution This work is licensed under a Creative Commons Attribution-Noncommercial-
The internet layer Skills: None IT concepts: layered protocols, the internet layer, IP protocol, router, dumb (“end-to- end,” “neutral”) networks This.
Image compression Skills: none IT concepts: effect of image compression This work is licensed under a Creative Commons Attribution-Noncommercial- Share.
Connectivity overview Skills: none IT concepts: home, organization, backbone and mobile connectivity, local area network, network topologies This work.
11 Networks The Great Information Exchange. 2 Networking Fundamentals Computer network: Two or more computers connected together Each is a Node Benefits.
Attributes of HTML tags Skills: none IT concepts: HTML tag, value, attribute This work is licensed under a Creative Commons Attribution-Noncommercial-
Including images in Web pages Skills: use the tag IT concepts: none This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike.
Data plus a code → information Skills: none IT concepts: text code This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike.
Copying Web images Skills: Copy a Web image, see the properties of a Web image IT concepts: none This work is licensed under a Creative Commons Attribution-Noncommercial-
Creating hyperlinks with the a tag Skills: using the a tag IT concepts: none This work is licensed under a Creative Commons Attribution-Noncommercial-
Voice applications Skills: none IT concepts: history of network speech, voice over IP, speech synthesis (text to speech), speech recognition (speech to.
The CalREN backbone Skills: none IT concepts: backbone topology, LAN backbone connection, backbone management, link traffic statistics, device status statistics.
Communicating with images This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License. Skills: none IT concepts:
Background survey This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License. Skills: none IT concepts: survey service,
A student’s first Web site – good news and bad news Skills: resize and compress images IT concepts: pixel, image processing operation, compression This.
4 August 2015 RE Meyers, Ms.Ed., CCAI CCNA Discovery Curriculum Review Networking for Home and Small Businesses Chapter 4: Connecting to the Internet Through.
X.25 Packet switched Network consisting of X.25 switches. X.25 is a connection oriented protocol (Virtual Circuits). End nodes are identified by an X.25.
Marco J. Luzuriaga Marni McSween-Farmer Ross J Ryan Annemarie Yoos.
Telecommunications and Networks Chapter 6 – Understanding Technology (Third Edition)
Chapter 4. After completion of this chapter, you should be able to: Explain “what is the Internet? And how we connect to the Internet using an ISP. Explain.
Skills: none Concepts: local area network, router, inter network, the TCP/IP layered software “stack”, layer functions, layer protocols, dumb versus smart.
Data Communication. 2 Data Communications Data communication system components: Message Message Information (data) to be communicated. Sender Sender Device.
Module 2: Information Technology Infrastructure
Networks and Networking TEST NEXT WEEK Chapter 6.
Introduction to Information Systems Lecture 06 Telecommunications and Networks Business Value of Networks Jaeki Song.
Telecommunications and Networks Chapter 8. Types of Signals Analog – a continuous waveform that passes through a communications medium Digital signal.
Data Communications and Networking CSCS 311 Lecture 4 Amjad Hussain Zahid.
3/20: Telecommunications & Networking What is telecommunications? The hardware: physical components of telecommunications, inc. channels Standards: agreements.
This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. Quick teaching topic: communication speed This three.
Presenters: Chris Gravatt Tina Vargas Tim Trettel Mallory De Kovessey.
Using a wiki This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License. Skills (application development): wiki.
Network Media. Copper, Optical, Fibre (Physical Layer Technologies) Introduction to Computer Networking.
CONNECTING TO THE INTERNET THROUGH ISP. WHAT IS INTERNET? The Internet is a worldwide collection of computer networks, cooperating with each other to.
Management Information Systems - Introduction. The telecommunication system Telecommunication System – consists of hardware and software that transmits.
Ping demonstration Skills: use ping
Networks – Data Transmission
Satellite connectivity
Chapter 7: Networking= Connecting Computing Devices
Presentation transcript:

Characteristics of communication links Skills: none IT concepts: data transmission rate, latency, jitter, packet loss, medium This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License.

Characteristics of communication links Internet concepts –Applications –Technology (connectivity) –Implications for Individuals Organizations Society Internet skills –Application development –Content creation Text Image Audio Video

Link characteristics 1.Speed 2.Latency 3.Jitter 4.Packet loss rate 5.Medium

Do you know the speed of the link between your home and your ISP? LAN router ISP router Home LAN The Internet

What is the unit of measure for data transmission speed? Measure ofExample unitsRate ratio DistanceInches, miles, light years Rate of movementMiles/hour, inches/year Distance/time WeightOunces, tons, grams Amount of dataBits, bytes, gigabytes Rate of data transmission ??

What is the unit of measure for data transmission speed? Measure ofExample unitsRate ratio DistanceInches, miles, light years Rate of movementMiles/hour, inches/year Distance/time WeightOunces, tons, grams Amount of dataBits, bytes, gigabytes Rate of data transmission Bits/second, bytes/second, gigabits/second Amount of data/time

PlanSpeed downSpeed upPrice Starter DSL1 Mbps384 Kbps$19.99 Power DSL3 Mbps768 Kbps$29.99 Turbo DSL7.1 Mbps768 Kbps$42.99 FIOS fast15 Mbps5 Mbps$49.99 FIOS faster25 Mbps15 Mbps$64.99 FIOS fastest50 Mbps20 Mbps$ Verizon Internet plans, November 2009 Note that speeds are “up to” these rates. Note the asymmetry in upload and download speed.

Prefixes for large quantities PrefixExactClose enoughName Kilo1,0241,000Thousand Mega1,024^21,000,000Million Giga1,024^31,000,000,000Billion Tera1,024^41,000,000,000,000Trillion Peta1,024^51,000,000,000,000,000Quadrillion After these prefixes come exa, zetta and yotta. The pattern continues -- each is 1,024 times the previous one.

Availability of 100 Mbps service in 2009 Follow this link for 100 Mbps cost.for 100 Mbps cost

Latency – the time for the first packet to arrive About half the ping (round trip) time

Jitter – variation in latency

Ping time and jitter from Los Angeles Distance (miles) P1 (ms) P2 (ms) P3 (ms) P4 (ms) Avg. (ms) Jitter (st dev) Santiago Chile5, Oxford England5,

Packet loss rate No packets lost -- packet loss is rare, but occurs

Packet loss rate from SLAC (Palo Alto, CA) Steady improvement everywhere but Africa All regions but Africa an parts of Asia are now under 1%

Current year data on Verizon backbone latency, packet loss rate and jitter

Transfer rate from SLAC (Palo Alto, CA)

Copper, twisted pair Copper, coaxial cable Fiber Terrestrial radio Satellite radio Link medium

We just covered five characteristics of a communication link. Do you recall what they were?