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Transcript of Introduction to Networks v5.1 Chapter 1: Explore the Network.
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Introduction to Networks v5.1
Chapter 1:
Explore the Network
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© 2013 Cisco and/or its affiliates. All rights reserved. Cisco Public 2
Chapter Outline
1.0 Introduction
1.1 Globally Connected
1.2 LANs, WANs, and the Internet
1.3 The Network as a Platform
1.4 The Changing Network Environment
1.5 Summary
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Section 1.1:Globally Connected
Upon completion of this section, you should be able to:
• Explain how networks affect the way we interact, learn, work, and play.
• Explain how host devices can be used as clients, servers, or both.
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Topic 1.1.1:Networking Today
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Networks in Our Daily Lives
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Technology Then and Now
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No BoundariesNetworks support the way we:
• Learn
• Communicate
• Work
• Play
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Topic 1.1.2:Providing Resources in a Network
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Networks of Many Sizes
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Clients and Servers
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Peer-to-Peer
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Section 1.2:LANs, WANs, and the Internet
Upon completion of this section, you should be able to:
• Explain the use of network devices.
• Compare the devices and topologies of a LAN to the devices and topologies of a WAN.
• Describe the basic structure of the Internet.
• Explain how LANs and WANs interconnect to the Internet.
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Topic 1.2.1:Network Components
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Overview of Network Components
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Overview of Network Components (cont.)
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Overview of Network Components (cont.)
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End Devices
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Intermediary Network Devices
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Network Media
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Network Media (cont.)
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Network Representations
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Network Representations (Cont.)Network Interface Card
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Topology Diagrams
Physical Topology
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Topology Diagrams (Cont.)
Logical Topology
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Topic 1.2.2:LANs and WANs
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Types of Networks
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Types of NetworksThe two most common types of network infrastructures are:
• Local Area Network (LAN)
• Wide Area Network (WAN)
Other types of networks include:
• Metropolitan Area Network (MAN)
• Wireless LAN (WLAN)
• Storage Area Network (SAN)
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Local Area Networks
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Wide Area Networks
LANs separated by geographic distance are connected by a network known as a WAN.
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Topic 1.2.3:The Internet, Intranets, and Extranets
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The Internet
LANs use WAN services to interconnect.
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Intranets and Extranets
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Topic 1.2.4:Internet Connections
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Internet Access Technologies
• Internet Service Provider (ISP)
• Broadband cable
• Broadband Digital Subscriber Line (DSL)
• Wireless WANs
• Mobile Services
• Business DSL
• Leased Lines
• Metro Ethernet
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Home and Small Office Internet Connections
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Business Internet Connections
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Section 1.3:The Network as a Platform
Upon completion of this section, you should be able to:
• Explain the concept of a converged network.
• Describe the four basic requirements of a reliable network.
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Topic 1.3.1:Converged Networks
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Traditional Separate Networks
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The Converging Networks
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Topic 1.3.2:Reliable Networks
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Network Architecture
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Fault Tolerance
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Scalability
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Quality of Service
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Security
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Security (cont.)
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Section 1.4:The Changing Network Environment
Upon completion of this section, you should be able to:
• Explain how trends such as BYOD, online collaboration, video, and cloud computing are changing the way we interact.
• Explain how networking technologies are changing the home environment.
• Identify basic security threats and solutions for both small and large networks.
• Describe the importance of understanding the underlying switching and routing infrastructure of a network.
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Topic 1.4.1:Network Trends
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New TrendsTop trends include:
• Bring Your Own Device (BYOD)
• Online collaboration
• Video communications
• Cloud computing
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Bring Your Own Device
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Online Collaboration
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Video Communication
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Cloud Computing
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Topic 1.4.2:Networking Technologies for the Home
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Technology Trends in the Home
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Powerline Networking
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Wireless Broadband
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Topic 1.4.3:Network Security
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Security Threats
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Security ThreatsThe most common external threats to networks include:
• Viruses, worms, and Trojan horses
• Spyware and adware
• Zero-day attacks, also called zero-hour attacks
• Hacker attacks
• Denial of service attacks
• Data interception and theft
• Identity theft
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Security SolutionsMinimum solutions:
• Antivirus and antispyware
• Firewall filtering
Additional solutions:
• Dedicated firewall systems
• Access control lists (ACL)
• Intrusion prevention systems (IPS)
• Virtual Private Networks (VPNs)
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Topic 1.4.4:Network Architecture
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Cisco Network Architecture
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CCNA
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Section 1.5:Summary
Chapter Objectives:
• Explain how multiple networks are used in everyday life.
• Describe the topologies and devices used in a small to medium-sized business network.
• Explain the basic characteristics of a network that supports communication in a small to medium-sized business.
• Explain trends in networking that will affect the use of networks in small to medium-sized businesses.
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Thank you.