Skills: none Concepts: domain, domain name, host, IP address, domain registrar This work is licensed under a Creative Commons Attribution-Noncommercial-Share.

Slides:

Advertisements

Similar presentations

Skills: subscribe to a list server (listserv), send messages to a list and unsubscribe Concepts: list, server, subscription, client-server, community.

Advertisements

Data import and export Skills: none IT concepts: data import and export, common data format This work is licensed under a Creative Commons Attribution-Noncommercial-

DNS and HTTPs ACN Presentation. Domain Names We refer to computers on the Internet (Internet hosts), by names like: sharda.ac.in These are called domain.

IT skills: compose URLs, beware of phishing IT concepts: parts of a URL, secure http, shortened URL, phishing, malware, domain name, directory, file name,

Skills: none Concepts: Web client (browser), Web server, network connection, URL, mobile client, protocol This work is licensed under a Creative Commons.

Skills: none Concepts: log, IP address, URL, packet header and body, geo-location, anonymity, proxy server, advertising signals, hacking, social graph.

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: Text editor versus word processor, information, text file, code, ASCII This work is licensed under a Creative Commons Attribution-Noncommercial-Share.

Skills: none Concepts: data and program files, IP packet, packet header, packet body, IP address, host name This work is licensed under a Creative Commons.

Skills: none Concepts: Application program interface (API) This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

Creating hyperlinks with the tag Skills: using the tag IT concepts: tag, attribute This work is licensed under a Creative Commons Attribution-Noncommercial-Share.

Skills: none Concepts: two uses of the word “application,” networked vs. stand-alone, collaborative vs. personal productivity, synchronous vs. asynchronous,

Skills: none Concepts: layered protocols, the internet layer, IP protocol, router, dumb (“end-to-end,” “neutral”) networks This work is licensed under.

Skills: edit, display the history of, discuss, and track changes to a page, wiki technique tips Concepts: Wiki operations This work is licensed under a.

Course overview IT skills: none IT concepts: the scope of the course This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike.

Skills: Using Yahoo Groups, creating a new Yahoo Group Concepts: Internet service, threaded discussion, message archives This work is licensed under a.

Skills: be careful and thoughtful when posting content Concepts: you are responsible for what you write online This work is licensed under a Creative Commons.

Skills: none Concepts: protocol, hypertext transfer protocol, standard This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike.

Skills: create, modify and post to a blog Concepts: wire-frame diagram, independence of content and appearance, gadget or widget, Blogger menu structure.

Skills: include images in Web pages Concepts: tag, attribute, value, path (to a stored file) This work is licensed under a Creative Commons Attribution-Noncommercial-Share.

Skills: none Concepts: application program interface (API), platform, ecosystem, Internet infrastructure (cloud) services, application development cost.

Popular Web client and server programs This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. Skills: none IT.

Skills: none Concepts: wiki examples and definition, operations, the wiki motto, wiki motivation and history, client- server applications This work is.

Skills: compressing an image using Paint.net Concepts: none This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

Skills: selecting, cropping, resizing and sharpening an image, using the tool setting and status information in Paint.net Concepts: image size, information.

Skills: create a Twitter account, subscribe to (follow) the class Twitter feed, post tweets Concepts: subscription This work is licensed under a Creative.

Using the Google Docs word processor Skills: getting a Google account, creating a text document and sharing it on the Internet Concepts: stand-alone applications.

Skills: none Concepts: LAN, data link functions – moving data within a LAN and medium access, data link protocols – Ethernet and WiFi, why protocols standards.

Skills: learn to use the topic module presentations Concepts: none This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike.

Networked application programs Skills: none Concepts: networked versus stand-alone applications, client-server architecture, Web applications versus specialized.

Skills: create a narrated video of a PowerPoint presentation Concepts: none This work is licensed under a Creative Commons Attribution-Noncommercial-Share.

Skills: Concepts: layered protocols, transport layer functions, TCP and UDP protocols, isochronous applications This work is licensed under a Creative.

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.

Retrieving compound pages This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License. Skills: none IT concepts:

Mobile and portable connectivity Skills: none IT concepts: mobile vs portable connectivity, connectivity options (WiFi, cellular and satellite), characteristics.

The domain name system (DNS) Skills: none IT concepts: domain, domain name, host, IP address, domain registrar This work is licensed under a Creative Commons.

TCP/IP summary Skills: none IT concepts: review This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License.

Privacy – what do they know about you? This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. Skills: none IT.

IT skills: IT concepts: Web client (browser), Web server, network connection, URL, mobile client, peer-to- peer application This work is licensed under.

Including images with the img tag Skills: using the img tag IT concepts: none This work is licensed under a Creative Commons Attribution-Noncommercial-

IT skills: compose URLs IT concepts: parts of a URL, shortened URLs This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike.

Skills: none Concepts: application development in the batch processing, timesharing, personal computer and Internet eras This work is licensed under a.

Copying Web images (the right mouse button is your friend) Skills: Copy a Web image, see the properties of a Web image, use the right mouse button IT concepts:

Internet backbones today Skills: none IT concepts: good news (expanding rapidly, performance improving), bad news (uneven global capacity) This work is.

Privacy – what do they know about you? This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License. Skills: none.

Skills: none Concepts: application, network versus stand-alone application, client, server, application versus system program This work is licensed under.

Data plus a code → information Skills: none IT concepts: text code This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike.

What happens when you retrieve a Web page? This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License. Skills: none.

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-

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,

Domain Name Services And IP Addressing. Domain Name Services Domain name is a way to identify and locate computers connected to the Internet. No two organizations.

1 Revised: April 29, What is a Web Domain?  A HOSTNAME that identifies one or more IP addresses (web servers)  IP address (Internet Protocol)

9.1. The Internet Domain Names and IP addresses. Aims Be able to compare terms such as Domain names and IP addresses URL,URI and URN Internet Registries.

Skills: Use Google Plus communities Concepts: Computer mediated communities of common interest This work is licensed under a Creative Commons Attribution-Noncommercial-Share.

DNS: Domain Name System

Skills: finding IP addresses, domain names and organization (whois) information Concepts: host, IP address, domain name, command line interface, graphical.

Skills: deploy a server with applications Concepts: evolution of application development and deployment, virtual server This work is licensed under a Creative.

Chapter 29 Domain Name System (DNS) Allows users to reference computer names via symbolic names translates symbolic host names into associated IP addresses.

Skills: none Concepts: Third party login, motivation for third party login, filter bubble This work is licensed under a Creative Commons Attribution-Noncommercial-Share.

Skills: none Concepts: research versus product prototypes This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

Domain Name System (DNS)

Skills: Adding independent layers to images Concepts: Image layers This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike.

{ Domain Name System DNS & IP Address Protocols within the Internet Ecosystem. - Amanda Sparling, EMAC 6300.

Skills: none Concepts: client, server, service, upload, download, client-server application, Internet, hardware, software This work is licensed under a.

Using the Google Docs word processor Skills: familiarity with Google Docs, creating and sharing text document on the Internet Concepts: stand-alone applications.

Understand Names Resolution

List servers (listservs)

Retrieving compound pages

Presentation transcript:

Skills: none Concepts: domain, domain name, host, IP address, domain registrar This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. The domain name system

Where does this topic fit? Internet concepts – Applications – Technology (communication) – Implications Internet skills – Application development – Content creation – User skills

Internet hosts

IP addresses and domain names =

Domain name servers do the conversion DNS server DNS server

DNS server DNS server

The parts of a domain name The particular host is called som The organization that owns the name it is csudh This host is at an educational organization som.csudh.edu

How are these hosts related? bpastudio.csudh.edu sws.csudh.edu chemistry.stanford.edu

How are these hosts related? som.csudh.edu sws.csudh.edu chemistry.csudh.edu

A unique host som.csudh.edu

Some generic top-level domains.edu, educational.com, commercial.gov, government.org, non profit.net, networking organizations

Some country code top level domains.us, United States.mx, Mexico.cl, Chile.uk, United Kingdom.tv, Tuvalu

Some TLDs use a four-level hierarchy

rootcomorgneteduUCLAUSCCSUDHsommathwwwswslibrary…CSULB…tvus… The system is hierarchical

CSUDH name server Edu name server Root name server Name servers are decentralized ? ?

Summary We’ve seen that domains are groups of related computers. Domains have names. Individual hosts have unique, fully qualified domain names. The top level domains seldom change, but people are constantly registering new second-level domains. Domain name servers keep track of the correspondence between IP addresses and the corresponding domain names. Responsibility for maintain ing the lists of names and addresses is decentralized.

Self-study questions Are there more hosts in the.edu domain or the csudh.edu domain? Can two hosts have the same domain name? Can two hosts be in the same top level domain? Can two hosts be in the same second level domain? Is the.com domain name available for purchase? If so, how much would it cost? Why do you get an error message when you try to go to also returns an error message. Why?

Resources A DNS lookup web site (forward and backward): For most generic TLDs there are many registrars and a competitive registration market place: The registrar for.edu is a professional society called Educause: List of organizations responsible for registrars in the country code domains: