Itn instructor ppt_chapter1 - exploring the network
-
Upload
joehurst87 -
Category
Technology
-
view
1.459 -
download
1
description
Transcript of Itn instructor ppt_chapter1 - exploring the network
![Page 1: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/1.jpg)
© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 1
Chapter 1:Exploring the Network
Introduction to Networks
![Page 2: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/2.jpg)
Presentation_ID 2© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Chapter 1: Objectives
Students will be able to:
Explain how multiple networks are used in everyday life.
Explain 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.
![Page 3: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/3.jpg)
Presentation_ID 3© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Chapter 1
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
![Page 4: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/4.jpg)
Presentation_ID 4© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Networking Today
Networks in Our Past and Daily Lives
![Page 5: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/5.jpg)
Presentation_ID 5© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Networking Today
The Global Community
![Page 6: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/6.jpg)
Presentation_ID 6© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Interconnecting our Lives
Networking impacts in our daily lives
Networks Support the Way We Learn
Networks Support the Way We Communicate
Networks Support the Way We Work
Networks Support the Way We Play
![Page 7: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/7.jpg)
Presentation_ID 7© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Providing Resources in a Network
Networks of Many Sizes
![Page 8: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/8.jpg)
Presentation_ID 8© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Providing Resources in a Network
Clients and Servers
![Page 9: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/9.jpg)
Presentation_ID 9© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Providing Resources in a Network
Peer-to-Peer
![Page 10: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/10.jpg)
Presentation_ID 10© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
LANs, WANs, and Internets
Components of a Network
There are three categories of network components:
Devices
Media
Services
![Page 11: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/11.jpg)
Presentation_ID 11© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Components of a Network
End Devices
Some examples of end devices are:
Computers (work stations, laptops, file servers, web servers)
Network printers
VoIP phones
TelePresence endpoint
Security cameras
Mobile handheld devices (such as smartphones, tablets, PDAs, and wireless debit / credit card readers and barcode scanners)
![Page 12: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/12.jpg)
Presentation_ID 12© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Components of a Network
Network Infrastructure Devices
Examples of intermediary network devices are:
Network Access Devices (switches, and wireless access points)
Internetworking Devices (routers)
Security Devices (firewalls)
![Page 13: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/13.jpg)
Presentation_ID 13© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Components of a Network
Network Media
![Page 14: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/14.jpg)
Presentation_ID 14© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Components of a Network
Network Representations
![Page 15: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/15.jpg)
Presentation_ID 15© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Components of a Network
Topology Diagrams
![Page 16: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/16.jpg)
Presentation_ID 16© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
LANs and WANs
Types of Networks
The 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)
![Page 17: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/17.jpg)
Presentation_ID 17© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
LANs and WANs
Local Area Networks (LAN)
![Page 18: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/18.jpg)
Presentation_ID 18© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
LANs and WANs
Wide Area Networks (WAN)
![Page 19: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/19.jpg)
Presentation_ID 19© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
LANs, WANs, and Internets
The Internet
![Page 20: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/20.jpg)
Presentation_ID 20© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
The Internet
Intranet and Extranet
![Page 21: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/21.jpg)
Presentation_ID 21© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
LANs, WANs, and Internets
Internet Access Technologies
![Page 22: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/22.jpg)
Presentation_ID 22© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Connecting to the Internet
Connecting Remote Users to the Internet
![Page 23: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/23.jpg)
Presentation_ID 23© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Connecting to the Internet
Connecting Businesses to the Internet
![Page 24: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/24.jpg)
Presentation_ID 24© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Converged Networks
The Converging Network
![Page 25: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/25.jpg)
Presentation_ID 25© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Converged Networks
Planning for the Future
![Page 26: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/26.jpg)
Presentation_ID 26© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Reliable Network
Supporting Network Architecture
As networks evolve, we are discovering that there are four basic characteristics that the underlying architectures need to address in order to meet user expectations:
Fault Tolerance
Scalability
Quality of Service (QoS)
Security
![Page 27: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/27.jpg)
Presentation_ID 27© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Reliable Network
Fault Tolerance in Circuit Switched Network
![Page 28: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/28.jpg)
Presentation_ID 28© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Reliable Network
Packet-Switched Networks
![Page 29: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/29.jpg)
Presentation_ID 29© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Reliable Network
Scalable Networks
![Page 30: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/30.jpg)
Presentation_ID 30© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Reliable Network
Providing (QoS)
Examples of priority decisions for an organization might include:
Time-sensitive communication - increase priority for services like telephony or video distribution.
Non time-sensitive communication - decrease priority for web page retrieval or email.
High importance to organization - increase priority for production control or business transaction data.
Undesirable communication - decrease priority or block unwanted activity, like peer-to-peer file sharing or live entertainment
![Page 31: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/31.jpg)
Presentation_ID 31© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Reliable Network
Providing Network Security
![Page 32: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/32.jpg)
Presentation_ID 32© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Network Trends
New trends
Some of the top trends include:
Bring Your Own Device (BYOD)
Online collaboration
Video
Cloud computing
![Page 33: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/33.jpg)
Presentation_ID 33© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Network Trends
Bring Your Own Device (BYOD)
![Page 34: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/34.jpg)
Presentation_ID 34© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Network Trends
Online Collaboration
![Page 35: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/35.jpg)
Presentation_ID 35© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Network Trends
Video Communication
![Page 36: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/36.jpg)
Presentation_ID 36© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Network Trends
Cloud Computing
There are four primary types of clouds:
Public clouds
Private clouds
Custom clouds
Hybrid clouds
![Page 37: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/37.jpg)
Presentation_ID 37© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Network Trends
Data Centers
A data center is a facility used to house computer systems and associated components including:
Redundant data communications connections
High-speed virtual servers (sometimes referred to as server farms or server clusters)
Redundant storage systems (typically uses SAN technology)
Redundant or backup power supplies
Environmental controls (e.g., air conditioning, fire suppression)
Security devices
![Page 38: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/38.jpg)
Presentation_ID 38© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Networking Technologies for the Home
Technology Trends in the Home
![Page 39: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/39.jpg)
Presentation_ID 39© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Networking Technologies for the Home
Powerline Networking
![Page 40: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/40.jpg)
Presentation_ID 40© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Networking Technologies for the Home
Wireless Broadband
![Page 41: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/41.jpg)
Presentation_ID 41© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Future of Networking
Network Security
![Page 42: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/42.jpg)
Presentation_ID 42© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Network Security
Security Threats
The 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
![Page 43: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/43.jpg)
Presentation_ID 43© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Network Security
Security Solutions
Network security components often include:
Antivirus and antispyware
Firewall filtering
Dedicated firewall systems
Access control lists (ACL)
Intrusion prevention systems (IPS)
Virtual Private Networks (VPNs)
![Page 44: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/44.jpg)
Presentation_ID 44© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Network Architectures
Cisco Network Architectures
![Page 45: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/45.jpg)
Presentation_ID 45© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Network Architectures
Cisco Certified Network Associate (CCNA)
![Page 46: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/46.jpg)
Presentation_ID 46© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Exploring the Networking
Summary
In this chapter, you learned:
Networks and the Internet have changed the way we communicate, learn, work, and even play.
Networks come in all sizes. They can range from simple networks consisting of two computers, to networks connecting millions of devices.
The Internet is the largest network in existence. In fact, the term Internet means a ‘network of networks. The Internet provides the services that enable us to connect and communicate with our families, friends, work, and interests.
![Page 47: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/47.jpg)
Presentation_ID 47© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Exploring the Networking
Summary
In this chapter, you learned:
The network infrastructure is the platform that supports the network. It provides the stable and reliable channel over which communication can occur. It is made up of network components including end devices, intermediate device, and network media.
Networks must be reliable.
Network security is an integral part of computer networking, regardless of whether the network is limited to a home environment with a single connection to the Internet, or as large as a corporation with thousands of users.
![Page 48: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/48.jpg)
Presentation_ID 48© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential
Exploring the Networking
Summary
In this chapter, you learned:
The network infrastructure can vary greatly in terms of size, number of users, and number and types of services that are supported on it. The network infrastructure must grow and adjust to support the way the network is used. The routing and switching platform is the foundation of any network infrastructure.
![Page 49: Itn instructor ppt_chapter1 - exploring the network](https://reader033.fdocuments.net/reader033/viewer/2022061113/545c4370af7959be098b4709/html5/thumbnails/49.jpg)
Presentation_ID 49© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential