Outside the Box: Networks and The Internet
|
|
|
- Shanon Reeves
- 6 years ago
- Views:
Transcription
1 Outside the Box: Networks and The Internet Don Mason Associate Director Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Inside vs. Outside Inside the Box What the computer owner actually has possession of Computer s hard drive and other memory Documents Pictures Outlook s Internet Cache CD s and floppy disks ipods Cell Phones External Hard Drives Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 1
2 Inside the Box What the computer owner actually has possession of Outside the Box What is not stored on the owner s computer Online Accounts (Gmail and Yahoo) Internet Shopping Accounts Social Networking Accounts Backups of text messages Cell Site Location Data Using Pen/Trap for Internet DRAS information Subscriber account records Contents of Websites Outside the Box What is not stored on the owner s computer Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 2
3 Networks Network Setup Networks may take two forms: Wired each computer connects to a router with a cable Speeds of 100 Mbps Wireless computers connect through a signal that is broadcasted by a router Home wireless networks allow sharing of a connection as far as 750 feet Unauthorized access is much easier Speeds up to 54 Mbps Basic Network Router Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 3
4 Basic Network Router Server What is the Internet? A network of computers? A network of networks? It is a network of millions of networks World Wide Web Plus lots more. WWW is the most obvious part of the Internet, but it isn t all of it Each computer on the Internet uses TCP/IP to communicate The Internet World Wide Web (the Web) Instant messaging (IM) Webcam / Internet Telephone (VoIP) Peer-to-peer (P2P) networks Legacy Systems Usenet Newsgroups Telnet and File transfer (FTP) sites Internet Relay Chat (IRC) Bulletin boards Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 4
5 What Kinds of Computers Can Be on the Internet? Mainframes Laptops Vehicles Cell Phones Personal computers Internet Connectivity Home PCs Internet Service Provider (ISP) Telephone dialin line Network Cable modem connection High-speed data link DSL line Network Network Internet Connections At one time, dial-up was the predominant way to connect to the Internet. Today, dialup has been replaced so the user is constantly connected and receives higher speeds Dial-up 56 Kbps DSL 245 Kbps to 20 Mbps T-3 44 Mbps 3G 200 Kbps Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 5
6 Internet Connections Many businesses utilize the same connection types as home users, but often subscribe to a higher connection speed Larger businesses use a T1 or T3 connection Requires direct fiber optic connection May cost more than $10,000 per month Even faster networks are available Cost can exceed $5 million per month IP Addressing Each device on the Internet has a unique IP address, such as this one: Computers, servers, and even printers have an IP address Addresses are usually temporary In some cases, static addresses are assigned permanently IP Addressing If a network utilizes a router, there are two IP addresses involved Internal: each computer has an internal IP address that distinguishes the computers on the network External: the unique IP address assigned to the router by the ISP Data is received at the external IP address by the router, and then the router sends the information to the correct internally-addressed computer Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 6
7 IP Addressing Router Internal: External: Computer 1 Internal: External: Computer 3 Internal: External: Computer 2 Internal: External: Coffee Shop Internal: External: The Office Internal: External: Home External: Why Addressing Matters The Internet is a packet-switched network The component parts of a communication (i.e., the packets) sent to another host may travel by different paths Each packet makes one or more hops along the network on the way to its destination Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 7
8 TCP Packet Switching A B Sending File from Computer A to Computer B TCP Packet Switching A B File is broken into smaller pieces called packets TCP Packet Switching A B The packets are labeled with addressing information Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 8
9 TCP Packet Switching A B The packets are not sent through the same path. There are billions of paths they may take. TCP Packet Switching A B When the packets arrive, they must be put back together. The Path Home Computer Home Router 5 4 Internet Service Provider Website Host Internet Exchange Point Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 9
10 Domains & URLs Domain names are used to help a browser locate a website. For example: http :// Protocol Subdomain Domain Host Top- Level Domains & URLs Domain names provide information about the corresponding computer.com,.gov,.edu,.net,.int,.mil are generic top-level domains for types of organizations other top-level domains are geographybased (e.g.,.de for Germany,.fr for France, etc.) Domains & URLs Domain names often serve as an alias for an IP address. For some websites, the IP address is interchangeable with the domain name. For example, you can visit Google by entering either: Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 10
11 Why It Matters How Computers, Networks, and the Internet Work Immense amount of digital data created, transmitted, stored Some created by humans A lot necessarily created by machines in the background Digital Evidence User-created Text (documents, , chats, IM s) Address books Bookmarks Databases Images (photos, drawings, diagrams) Video and sound files Web pages Service provider account subscriber records Digital Evidence Computer-created Dialing, routing, addressing, signaling info headers Metadata Logs, logs, logs Browser cache, history, cookies Backup and registry files Configuration files Printer spool files Swap files and other transient data Surveillance tapes, recordings Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 11
12 Web Browsers A browser is a computer application that retrieves and displays content from the web This content may include web pages, videos, pictures, and more Popular browsers include Firefox, Internet Explorer, Chrome, and Safari Browser Functions Web browsers also collect a variety of information about a user s online actions and save this information on the computer History Cache / Temporary Internet Files Cookies Browser Functions History Records each page visited within the browser Tags each visit with a time and date Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 12
13 Browser Functions Internet History Browser Functions Cache (Temporary Internet Files) Stores data so that future requests for the same website can be served faster Cache is most obvious when you click the back button. The webpage appears almost immediately because the content is retrieved from your computer, not the server Cache may remain on a computer for weeks at a time or longer Browser Functions Cache (continued) Usually consists only of images and text May allow viewing of an entire website even if the computer is not connected to the Internet Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 13
14 Browser Functions Temporary Internet Files Folder Browser Functions Cookies Text stored by the browser May store a user s site viewing preferences or contents of their shopping cart Some will contain personal information such as a login name or address Cookies rarely, if ever, contain information like passwords or credit card numbers Browser Functions Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 14
15 The Internet: It s more than just Web 2.0 Interactive Internet communities Social networks Blogs Wikis Video or photo sharing sites Online role-playing games Virtual worlds Virtual Worlds features: User chooses name, job, body type, lifestyle, personality Exchange of USD for Second Life currency Money is used to buy clothing, cars, and buildings, and to pay for services Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 15
16 Avatars in Second Life Ever wanted to fly? Virtual Worlds Online Lectures Virtual Worlds Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 16
17 Virtual Worlds Political Rallies Virtual Worlds Social Networking Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 17
18 Social Networking Social Networking Some Social Networking features: Posting Messages (public or private) Personal Profile Picture Sharing Interactive Games Instant Messaging Classified Advertising Social Networking Search Search Results One Result: Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 18
19 Social Networking Consider Cloud Computing ( Web 3.0?) Cloud Computing Basically, obtaining computing resources from someplace outside your own four walls Processing Storage Messaging Databases etc. Entrusting data to third-party providers Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 19
20 The Cloud Everything we currently do. Online Storage Social Networking Peer-Peer File Sharing Chat and IM Virtual worlds and online games Peer-to-Peer Networking Peer-to-Peer Networking is used to download files from the Internet including: Music Movies Books & Magazines Documents Pornography While not always illegal, it often is. Client-Server vs. Peer-to-Peer Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 20
21 Peer-to-Peer Networking Step 1: User downloads the software Peer-to-Peer Networking Step 2: User searches for the movie and downloads a torrent file Peer-to-Peer Networking Step 3: User begins to download the file Jim s Download Queue Different users that are sharing the file with Jim Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 21
22 Peer-to-Peer Networking Step 4: User is able to play the movie and his computer often continues to share it with other users on BitTorrent Peer-to-Peer Networking Considerations By default, BitTorrent, Limewire and other P2P programs share downloaded files Broadband use turned home computers into distributed super-networks for sharing files Design of networks fault tolerant and load balancing Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 22
23 Considerations Users on Internet voluntarily Users can decide, through settings in the software, how much or how little of their computers will be open to viewing by others on the Internet Considerations Every download is exact duplicate of the original image Internet Protocol (IP) Address of individual user can be ascertained (identifying unique computer) Successful tracking of IP address reveals computer that had the file available for distribution 68 Cellular Phones Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 23
24 Cellular Phones Modern cell phones have a variety of functions, including: SMS (short message service) MMS (multimedia message service) Phone Calls Cameras File Storage Internet Access Cellular Phones SMS (short message service) 160 characters or less Sent from cell phone to cell phone by way of towers and servers If recipient phone is off, a message will be saved until the phone is turned on Cellular Phones Sender types message and sends it The message travels through the nearest cell towers The phone company directs the message to the recipient through it s servers The message travels through the nearest cell towers to the recipient The recipient receives the message Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 24
25 Cellular Phones Sample Tower/Sector Questions? Don Mason Associate Director National Center for Justice and the Rule of Law Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Page 25
Inside vs. Outside. Inside the Box What the computer owner actually has possession of 1/18/2011
Outside the Box: Networks and The Internet Don Mason Associate Director Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Inside vs. Outside Inside the Box What the computer
WEBINAR. Web Browsing 101 1/12/2012 WEBINAR TIPS:
Browsing 101 WEBINAR TIPS: 1. Power off cell phones. 2. If accessing webinar through telephone, turn down volume of computer speakers (or mute them.) 3. Conference attendees will be muted during webinar
8 9 Before: Computers are categorized into three main categories from least to most powerful: microcomputers minicomputers mainframe computers Today:
1 Computer, Internet, and Network Basics 2 Computer Basics A computer system includes a computer, peripheral devices, and software Computer refers to a device that accepts data as input, processes data,
Chapter 2 The Internet and World Wide Web
Chapter 2 The Internet and World Wide Web Chapter 2 Objectives Explain how to access and connect to the Internet Explain how to view pages and search for information on the Web Describe the types of Web
Chapter 6 The Internet
Chapter The Internet Computer Concepts 2014 Chapter Contents Section A: Internet Technology Section B: Fixed Internet Access Section C: Portable and Mobile Internet Access Section D: Internet Services
USE OF TECHNOLOGY TO DISTRIBUTE CHILD PORNOGRAPHY
Peer to Peer Networking BitTorrent, a popular peer to peer networking software, can be downloaded for free from the BitTorrent website. Once the user has installed the program on their computer, they can
Chapter 3. E-commerce The Evolution of the Internet 1961 Present. The Internet: Technology Background. The Internet: Key Technology Concepts
E-commerce 2015 business. technology. society. eleventh edition Kenneth C. Laudon Carol Guercio Traver Chapter 3 E-commerce Infrastructure: The Internet, Web, and Mobile Platform Copyright 2015 Pearson
Mobile Devices. Questions. NCJRL ICAC Webinar Mobile Devices October 25, Don Mason Associate Director, NCJRL. Presenter
Mobile Devices Presenter Don Mason Associate Director, NCJRL 662-915-6898 drmason@olemiss.edu Questions Feel free to email any time to: drmason@olemiss.edu Please include your phone number In case it might
Mobile Devices. Objectives. Types of Devices 4/25/2012
Mobile Devices Objectives Identify mobile devices Learn how mobile devices obtain and transmit information Identify potential evidence that may be obtained from mobile devices Learn where data is stored
Computer networks 2013
Chapter 4 EXERCISE 1 1 Describe what is meant by each of the following: a Router b Bridge c Proxy server Answers: see the Glossary. 2 Many small businesses have computer networks. a List three advantages
USE OF TECHNOLOGY TO DISTRIBUTE CHILD PORNOGRAPHY
TYPES OF TECHNOLOGY Peer to Peer Networking Networks in which computers are equal partners using common file sharing programs that allow users to connect directly to each other s computer hard drive to
Bowie Senior Center Surfing the Web
Bowie Senior Center Surfing the Web (Without a wetsuit) Introduction Surfing the web is just another term for the activity of searching the Internet for web sites of interest. The Internet is a very powerful
ACE Chapter 4 review. Name: Class: Date: True/False Indicate whether the statement is true or false.
Name: Class: Date: ACE Chapter 4 review True/False Indicate whether the statement is true or false. 1. Today s Internet joins together networks of over 300 million computers, or Internet hosts, to create
Typical Network Uses
Computer Networks Introduction The next Great Revolution - Computer Networks- computers connected together for exchanging information Our information-oriented society - applications in education, commerce,
The Internet and World Wide Web. Chapter4
The Internet and World Wide Web Chapter4 ITBIS105 IS-IT-UOB 2016 The Internet What is the Internet? Worldwide collection of millions of computers networks that connects ITBIS105 IS-IT-UOB 2016 2 History
Defining the Internet
Defining the Internet Daniel Zappala CS 460 Computer Communications and Networking Brigham Young University What is the Internet? 2/23 Internet Map, courtesy Barrett Lyon, 2003 What is the Internet? 3/23
Chapter 2A. The Internet s History
Chapter 2A The Internet and the World Wide Web 1 The Internet s History At about 10:30 PM on October 29th, 1969, a connection was established over a 50 kbps line provided by the AT&T telephone company,
Internet Basics. Basic Terms and Concepts. Connecting to the Internet
Internet Basics In this Learning Unit, we are going to explore the fascinating and ever-changing world of the Internet. The Internet is the largest computer network in the world, connecting more than a
Chapter 3. The Basics of Networking
Chapter 3 The Basics of Networking Learning Objectives Tell whether a communication technology (Internet, radio, LAN, etc.) is synchronous or asynchronous; broadcast or point-to-point Explain the roles
Chapter 2 The Internet and World Wide Web
Chapter 2 The Internet and World Wide Web Chapter 2 Objectives Discuss the history of the Internet Describe the types of Web sites Explain how to access and connect to the Internet Recognize how Web pages
Discovering Computers Chapter 2 The Internet and World Wide Web
Discovering Computers 2009 Chapter 2 The Internet and World Wide Web Chapter 2 Objectives Discuss the history of the Internet Describe the types of Web sites Explain how to access and connect to the Internet
Computers Are Your Future
Computers Are Your Future Computers Are Your Future The Internet and World Wide Web 2006 Prentice-Hall, Inc. Slide 2 What You Will Learn... What You Will Learn... How the Internet works Methods for accessing
Computers: Information Technology in Perspective, 11e
Computers: Information Technology in Perspective, 11e Larry Long and Nancy Long Chapter 3 Going Online Copyright Prentice Hall, Inc. 1 Objectives Once you have read and studied this chapter, you will have
Networks and the Internet A Primer for Prosecutors and Investigators
Computer Crime & Intellectual Property Section Networks and the Internet A Primer for Prosecutors and Investigators Computer Crime and Intellectual Property Section () Criminal Division, U.S. Department
Internet Crimes Against Children:
Internet Crimes Against Children: Web, 2011 PROGRAM MATERIALS Presented By Professor Donald R. Mason Associate Director & Research Professor The National Center for Justice & the Rule of Law at The University
Discovering Computers Your Interactive Guide to the Digital World
Discovering Computers 2012 Your Interactive Guide to the Digital World Objectives Overview Discuss the evolution of the Internet Identify and briefly describe various broadband Internet connections and
Introduction to the Internet. Part 1. What is the Internet?
Introduction to the Internet Part 1 What is the Internet? A means of connecting a computer to any other computer anywhere in the world via dedicated routers and servers. When two computers are connected
Discovering Computers Chapter 9 Communications and Networks
Discovering Computers 2009 Chapter 9 Communications and Networks Chapter 9 Objectives Discuss the components required for successful communications Identify various sending and receiving devices Describe
Chapter 1 Living in a Network Centric World
Chapter 1 Living in a Network Centric World Introduction The globalization of the Internet has succeeded faster than anyone could have imagined. The manner in which social, commercial, political and personal
Chapter 7. Telecommunications, the Internet, and Wireless Technology
Chapter 7 Telecommunications, the Internet, and Wireless Technology LEARNING OBJECTIVES What are the principal components of telecommunications networks and key networking technologies? What are the different
Definitions Know What I Mean?
Definitions Know What I Mean? The list below contains words you will read about in this resource and that your children probably use regularly as they are a normal part of their school world (if not their
Networks and the Internet A Primer for Prosecutors and Investigators
Computer Crime & Intellectual Property Section Networks and the Internet A Primer for Prosecutors and Investigators Al Rees Trial Attorney Computer Crime and Intellectual Property Section () Criminal Division,
Skill Area 209: Use Internet Technology. Software Application (SWA)
Skill Area 209: Use Internet Technology Software Application (SWA) Skill Area 209.1 Use Browser for Research (10hrs) 209.1.1 Familiarise with the Environment of Selected Browser Internet Technology The
Unit A: Computer and Internet Basics
Unit A: Computer and Internet Basics TRUE/FALSE 1. Cars and appliances include digital electronics. ANS: T PTS: 1 REF: Concepts 2 2. Usually when people talk about computers, they are talking about a PC.
and the Forensic Science CC Spring 2007 Prof. Nehru
and the Introduction The Internet, (Information superhighway), has opened a medium for people to communicate and to access millions of pieces of information from computers located anywhere on the globe.
09-Jan-17. Objectives Overview. The Internet. Objectives Overview. Evolution of the Internet. Evolution of the Internet. Discovering Computers 2012
Objectives Overview Discuss the evolution of the Identify and briefly describe various broadband connections and state differences between broadband connections and dialup connections Describe the types
Class X Subject : IT (Vocational) Chapter -1 Ouestion / Answer
Class X Subject : IT (Vocational) Chapter -1 Ouestion / Answer Q1 What is a computer network? A computer network, often simply referred to as a network, is a collection of computers and other hardware
Internet Basics. Basic Terms and Concepts. Connecting to the Internet
Internet Basics In this Learning Unit, we are going to explore the fascinating and ever-changing world of the Internet. The Internet is the largest computer network in the world, connecting more than a
Computer Networks and the internet. Daniel Graham Ph.D
Computer Networks and the internet Daniel Graham Ph.D 1.1 What Is the Internet? The Internet is a computer network that interconnects hundreds of millions of computing devices throughout the world. As
The Basics of Networking
c h a p t e r 3 The Basics of Networking Making the Connection lawrence snyder Times are Changing Nowhere Is Remote People are more interconnected Social interactions are changing Freedom of Seach and
ECS 15; Lectures 17 and 18. The Internet. What is the internet, and how does it work? TA feedback
ECS 15; Lectures 17 and 18 The Internet What is the internet, and how does it work? TA feedback Python -- Run your code!! Term paper: Start a paragraph with the point of the paragraph, not in modern times
Communications and Networks
Information Technology Skills (DUT 122) CHAPTER 6: Communications and Networks Miss Wan Nor Ashiqin Wan Ali School of Human Development and Technocommunication Objectives Overview Discuss the purpose of
Using the Internet and the World Wide Web
Using the Internet and the World Wide Web Computer Literacy BASICS: A Comprehensive Guide to IC 3, 3 rd Edition 1 Objectives Understand the difference between the Internet and the World Wide Web. Identify
INTERNET PROGRAMMING INTRODUCTION
INTERNET PROGRAMMING INTRODUCTION Software Engineering Branch / 4 th Class Computer Engineering Department University of Technology ORGANIZATION Lecture Mondays, 08:30-10:30 (Hall 4). Project 1. The project
Management Information Systems
Telecommunications, the Internet, and Wireless Technology Lecturer: Richard Boateng, PhD. Lecturer in Information Systems, University of Ghana Business School Executive Director, PearlRichards Foundation,
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Glossary A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A App See Application Application An application (sometimes known as an app ) is a computer program which allows the user to perform a specific
Fundamentals of Information Systems, Seventh Edition
Fundamentals of Information Systems, Seventh Edition Chapter 4 Telecommunications, the Internet, Intranets, and Extranets Fundamentals of Information Systems, Seventh Edition 1 An Overview of Telecommunications
Acknowledgment and Disclaimer:
What is the Internet Acknowledgment and Disclaimer: This presentation is supported in part by the National Science Foundation under Grant 1240841. Any opinions, findings, and conclusions or recommendations
CSEN 503 Introduction to Communication Networks
CSEN 503 Introduction to Communication Networks 1-1 Mervat AbuElkheir Hana Medhat Ayman Dayf ** Slides are attributed to J. F. Kurose People and Resources 1-2 Course Name Introduction to Communication
Objectives Overview. Chapter 9 Networks and Communications. Discovering Computers Instructor: Imran Khalil MSc-IT 1 st semester Fall 2016
Chapter 9 Networks and Communications Instructor: Imran Khalil MSc-IT 1 st semester Fall 2016 Discovering Computers 2012 Your Interactive Guide to the Digital World Objectives Overview Discuss the purpose
The City School Liaquat Campus Worksheet Module 3 Class 7 Name Class/Sec Date
The City School Liaquat Campus Worksheet Module 3 Class 7 Name Class/Sec Date 1. A Network consists of 2. A Point-to-Point Topology 3. The Internet is 1. Select the correct answer one computer computers
Full file at Chapter 2: Communications, Networks, the Internet, and the World Wide Web
Chapter 2: Communications, Networks, the Internet, and the World Wide Web MULTIPLE CHOICE 1. A is the path that data follows as data is transmitted as shown in the accompanying figure. a. communications
Internet. Class-In charge: S.Sasirekha
Internet Class-In charge: S.Sasirekha COMPUTER NETWORK A computer network is a collection of two or more computers, which are connected together to share information and resources. Network Operating Systems
CSC Introduction to Computers and Their Applications. Background
CSC 170 - Introduction to Computers and Their Applications Lecture 7 The Internet Background The history of the Internet begins in 1957. In a response to the Soviet Union launching Sputnik, the first man-made
Router Router Microprocessor controlled traffic direction home router DSL modem Computer Enterprise routers Core routers
Router Router is a Microprocessor controlled device that forwards data packets across the computer network. It is used to connect two or more data lines from different net works. The function of the router
The Internet and the World Wide Web
Technology Briefing The Internet and the World Wide Web TB5-1 Learning Objectives TB5-2 Learning Objectives TB5-3 How Did the Internet Get Started? Internet derived from internetworking 1960s U.S. Defense
The internet and the web
1 The internet and the web Internet lunched in 1969 National computer network called: Advanced Research Project Agency Network (ARPANET). The internet is : -Large network that connects together smaller
Network Applications and Protocols
Network Applications and Protocols VoIP (Voice over Internet Protocol) Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over
precise rules that govern communication between two parties TCP/IP: the basic Internet protocols IP: Internet protocol (bottom level)
Protocols precise rules that govern communication between two parties TCP/IP: the basic Internet protocols IP: Internet protocol (bottom level) all packets shipped from network to network as IP packets
The Internet and World Wide Web Chapter4
The Internet and World Wide Web Chapter4 IS-IT-UOB 2013 The Internet What is the Internet? Worldwide collection of networks that connects millions of computers IS-IT-UOB 2013 2 History of the Internet
Internet. Telephone Line
Internet The Internet (International Network) is a network of computers from all over the world linked together by telephone lines, fibre optic cables and satellite. Millions of users from all around the
CHAPTER2. 1. The Internet was launched in 1969 and was originally called
CHAPTER2 Multiple Choice 1. The Internet was launched in 1969 and was originally called a) AARPNET b) CERNET c) CERN d) ARPANET Answer: D Difficulty level: Hard Page: 30 Response: The Internet was originally
Chapter 7. Video cases:
Chapter 7 Telecommunications, the Internet, and Wireless Technology Video cases: Case 1: Telepresence Moves Out of the Boardrooom and Into the Field Case 2: Unified Communications Systems: Virtual Collaboration
Introduction to Internet
242 :: Data Entry Operations 10 Introduction to Internet 10.1 INTRODUCTION In the present age of information Technology, use of Internet is becoming quite popular for accessing information on any topic
Introduction to computer networking
edge core Introduction to computer networking Comp Sci 3600 Security Outline edge core 1 2 edge 3 core 4 5 6 The edge core Outline edge core 1 2 edge 3 core 4 5 6 edge core Billions of connected computing
There are two main types of computer networks:
Lesson 1 Internet 101 What is the Internet? Social networking refers to online services that allow people to interact with each other and stay connected with friends, family, and people around the world.
Access to the Web. Coverage. Basic Communication Technology. CMPT 165: Review
Access to the Web CMPT 165: Review Tamara Smyth, tamaras@cs.sfu.ca School of Computing Science, Simon Fraser University December 5, 2011 Access to the Web requires: a computer (of some kind) a connection
Network Connectivity and Mobility
Network Connectivity and Mobility BSAD 141 Dave Novak Topics Covered Lecture is structured based on the five elements of creating a connected world from the text book (with additional content) 1. Network
Chapter Topics. The History of the Internet. Chapter 7: Computer Networks, the Internet, and the World Wide Web
Chapter Topics Chapter 7: Computer Networks, the Internet, and the World Wide Web CS10051: Intro. to Computer Science Kent State University History of the Internet History of the World Wide Web Internet
Practice Examination 3
Name Date Click here to enter text. Click here to enter text. Pearson BTEC Level 1 / Level 2 First Information and Creative Technology Unit 1: The Online World Practice Examination 3 This practice examination
Lecture #25: Networks and Communications. Communication and Networks. What will we learn?
Lecture #25: Networks and Communications Communication and Networks What will we learn? How a communications system works What a network is What networks used for What network operating systems do What
INTRODUCTION TO ICT.
INTRODUCTION TO ICT. (Introducing Basic Network Concepts) Lecture # 24-25 By: M.Nadeem Akhtar. Department of CS & IT. URL: https://sites.google.com/site/nadeemcsuoliict/home/lectures 1 INTRODUCTION TO
Chapter 2: Communications, Networks, the Internet, and the World Wide Web
Chapter 2: Communications, Networks, the Internet, and the World Wide Web MULTIPLE CHOICE 1. A is the path that data follows as data is transmitted. a. communications channel c. twisted-pair cable b. transmission
The Internet, Intranets, and Extranets Chapter 7
The Internet, Intranets, and Extranets Chapter 7 MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 1 Principles and Learning Objectives The Internet is like many other technologies it provides
Part I: Hardware and communication
Part I: Hardware and communication The following are a list of definitions for most things in the first section of the syllabus for CG1(Computing Theory). To test yourself on these items, you should attempt
INTERNET AND THE WEB
INTERNET AND THE WEB BY Abikoye, O.C & Akintola, A.G. Department of Computer Science Faculty of Communication and Information Sciences Corresponding Author e-mail address: kemi_adeoye@yahoo.com, abikoye.o@unilorin.edu.ng
AQU Information Systems Fundamentals Spring 2012 Pg. 9.1
AQU Information Systems Fundamentals Spring 2012 Pg. 9.1 c h a p t e r 9 THE INTERNET & THE NEW INFORMATION TECHNOLOGY INFRASTRUCTURE 9.1 LEARNING OBJECTIVES Describe features of infrastructure & connectivity
5/17/2009. Networked Computers Change Our Lives. People Are More Interconnected. Nowhere Is Remote. English Is Becoming a Universal Language
Chapter 3: Making the Connection: The Basics of Networking Fluency with Information Technology Third Edition by Lawrence Snyder Networked Computers Change Our Lives The Information Age has brought profound
Discovering Computers Chapter 2 The Internet and World Wide Web
Discovering Computers 2008 Chapter 2 The Internet and World Wide Web Just remember It took 38 years for radio to reach 50 million users 13 years for television to reach 50 million users Less than 4 years
Computer Concepts - Illustrated Introductory, Ninth Edition
Computer Concepts - Illustrated Introductory, Ninth Edition Page 1 of 11 Computer Concepts - Illustrated Introductory, Ninth Edition Unit A: Computer and Internet Basics 1. Make sure that you can define
M4.3-R4: INTRODUCTION TO ICT RESOURCES
M4.3-R4: INTRODUCTION TO ICT RESOURCES NOTE: 1. There are TWO PARTS in this Module/Paper. PART ONE contains FOUR questions and PART TWO contains FIVE questions. 2. PART ONE is to be answered in the TEAR-OFF
Web Engineering (CC 552)
Web Engineering (CC 552) Introduction Dr. Mohamed Magdy mohamedmagdy@gmail.com Room 405 (CCIT) Course Goals n A general understanding of the fundamentals of the Internet programming n Knowledge and experience
Component 4: Introduction to Information and Computer Science
Component 4: Introduction to Information and Computer Science Unit 2: Internet and the World Wide Web Lecture 1 This material was developed by Oregon Health & Science University, funded by the Department
ipad Beyond the Basics
ipad Beyond the Basics Backup and Restore 2 Backup Using itunes 2 Backup Using icloud 3 Updating Device Software 5 Internet Browser 6 Bookmarks 6 Cut/Copy and Paste 7 Email 8 imessage 9 Maps 10 Editing
LECTURE WK4 NETWORKING
LECTURE WK4 NETWORKING Workbook and Quiz Workbook o Due in WK5 o Must hand in a hard copy to the tutor as well as an online submission Quiz o In the practical class o 30mins to complete the quiz o Short,
INTRODUCTION TO INFORMATION & COMMUNICATION TECHNOLOGY (ICT) LECTURE 1 : WEEK 1 CSC-111-T
INTRODUCTION TO INFORMATION & COMMUNICATION TECHNOLOGY (ICT) LECTURE 1 : WEEK 1 CSC-111-T Credit : (2 + 1) / Week 2 TEXT AND REF. BOOKS Text Book: Peter Norton (2011), Introduction to Computers, 7 /e,
Chapter 8 Networking and Digital Communication
Tomorrow s Technology and You 8/e George Beekman Michael J. Quinn Networking and Digital Communication 2008 Prentice-Hall, Inc. Slide 1 A computer network is any system of two or more computers that are
Principles of Information Systems textbook: Principles of Information Systems, Sixth Edition. Dr.Amer Alzaidi Department of Information Systems
+ Principles of Information Systems textbook: Principles of Information Systems, Sixth Edition Dr.Amer Alzaidi Department of Information Systems Chapter 4 Telecommunications, the Internet, Intranets, and
Chapter 3 The Basics of Networking
Fluency with Information Technology 7 th Edition Chapter 3 The Basics of Networking HTML Hypertext Markup Language Layout of document (Margin, font, text, image, ) Jump from point to point (non-linear)
ITP 140 Mobile Applications Technologies. Networks
ITP 140 Mobile Applications Technologies Networks A First Look Under the Hood 2 3 Communication Channels Mediums for transporting data from one system to another Physical Twisted Pair (CAT-3, CAT-5/6)
St name:mariam darbi St number :1699
St name:mariam darbi St number :1699 what is the internet &how it work? The internet : is a network of networks and is a global comput er network, it is offspring of the ARPANET project. This idea of connecting
E-commerce Kenneth C. Laudon Carol Guercio Traver. business. technology. society. tenth edition
E-commerce 2014 business. technology. society. tenth edition Kenneth C. Laudon Carol Guercio Traver Copyright 2014 Pearson Education, Inc. Publishing as Prentice Hall e Commerce Course : Chapter 3 E-commerce
AT&T SD-WAN Network Based service quick start guide
AT&T SD-WAN Network Based service quick start guide After you order your AT&T SD-WAN Network Based service, you can: Create administrator accounts Log in to the SD-WAN orchestrator Configure business policy
It is the process of sharing data, programs, and information between two or more computers.
1 Communications It is the process of sharing data, programs, and information between two or more computers. Numerous applications depend on communication systems: E-mail Instant messaging (IM) Internet
IBPS Practice Exam 1. 1.What is the ultimate purpose of Defragmentation? 1) Make the PC faster 2) Create More Free Space 3) Delete temporary files 4)
IBPS Practice Exam 1. 1.What is the ultimate purpose of Defragmentation? 1) Make the PC faster 2) Create More Free Space 3) Delete temporary files 4) Reduce Power consumption 5) All of the above 2. Computers
Computer Networks. Computer Networks. Telecommunication Links. CMPUT101 Introduction to Computing - Spring Chapter 12: Computer Networks 1
Computer Networks Chapter 12 Topics: Communication links LAN / WAN Internet / WWW CMPUT101 Introduction to Computing (c) Yngvi Bjornsson 1 Computer Networks A computer network is a set of independent computer
Name: Class: Date: Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.
Name: Class: Date: The Internet and WWW True/False Indicate whether the sentence or statement is true or false. 1. A search engine is a program that performs keyword searches for information on the Internet.
Networking. Prof. Abdul Hameed
Networking Prof. Abdul Hameed http://informationtechnology.pk http://informationtechnology.pk 0 Chapter Topics Networking Fundamentals Network Architectures and Components Connecting to the Internet Installing
Online Entertainment
STREAMING DOWNLOAD Your guide to Online Entertainment 1 Contents 1.0 Introduction Page 03 2.0 Online entertainment 2.1 What is online entertainment? Page 04 2.2 What forms of online entertainment are available?
Home and Wireless Networks 7
Contents Contents= 1 2 3 Home and Wireless Networks 7 What is a Home Network? 8 Wired Ethernet 10 Phoneline Network 11 Powerline Network 12 Wireless Home Networking 13 How Networks Operate 14 Peer Group