Introduction Chapter 1 – Cisco Network configuration Contents
1.1 Globally Connected
contents we are going to deal on are:-
- Explain how multiple networks are used in every day life.
- Explain how networks affect the way we interact, learn, work and play.
- Explain how host devices can be used as clients, servers, or both.
Basic Tutorial Points those are included.
- The objectives of this chapter are:
- Explain how networks affect the way we interact, learn, work, and play.
- Explain how host devices can be used as clients, server, or both.
- 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.
- Explain the concept of a converged network
- Describe the four basic requirements of a reliable network
The objectives of this chapter are:
- 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 some basic security threats and solutions for both small and large networks.
- Explain why it is important to understand the switching and routing infrastructure of a network.
- This chapter includes lots of lecture and concepts. Try to include as many questions as possible to keep students engaged during the presentation.
What wouldn’t we have without the Internet?
What will be possible in the future using the network as the platform?
Create a Packet Tracer demonstration and refer to it throughout the chapter when referencing concepts introduced in the chapter (routers, switches, interface, ports, network media connections) Demonstrate a basic topology and some of the key icons Reinforce the differences between the physical and logical topologies.
Briefly discuss examples of how Confidentiality, Integrity, and Availability are implemented
Confidentiality – Encryption and decryption of data in order not to be accessed by unauthorized person.
Integrity – checksums or hashing
Availability – ensured with redundant hardware, connections, backups, disaster recovery.
Networking Today Technology Then and Now
- We live in a world we barely imagined 20 years ago.
- What wouldn’t we have without the Internet?
- What will be possible in the future using the network as the platform?
Networking Today No Boundaries
- Advancements in networking technologies are helping create a world without boundaries.
- The immediate nature of communications over the Internet encourages global communities.
- Cisco refers to the impact of the Internet and networks on people the “human network”.
Networking Today Networks Support the Way We Learn
Do you remember sitting in a classroom, like this?. You don’t have to be in school anymore to take a class. You don’t have to be in a classroom to have a teacher.
Networking Today Networks Support the Way We Work
- The globalization of the Internet has empowered individuals to create information that can be accessed globally.
Forms of communication:
- Social Media
- Collaboration Tools
steps are following …
- Data networks have evolved into helping support the way we work.
- Online learning opportunities decrease costly and time consuming travel.
- Employee training is becoming more cost effective.
- We listen to music, watch movies, read books, and download material for future offline access.
- Networks allow online gaming in ways that were not possible 20 years ago.
- Offline activities have also been enhanced by networks including global communities for a wide range of hobbies and interests.
How do you play on the Internet?
Providing Resources in a Network Networks of Many Sizes
- Small Home Networks – connect a few computers to each other and the Internet
- Small Office/Home Office – enables computer within a home or remote office to connect to a corporate network
- Medium to Large Networks – many locations with hundreds or thousands of interconnected computers
- World Wide Networks – connects hundreds of millions of computers world-wide – such as the Internet
Providing Resources in a Network Clients and Servers
- Every computer connected to a network is called a host or end device.
- Servers are computers that provide information to end devices on the network. For example, email servers, web servers, or file server
- Clients are computers that send requests to the servers to retrieve information such as a web page from a web server or email from an email server.
Providing Resources in a Network Peer-to-Peer
- Client and server software usually run on separate computers.
- However, in small businesses or homes, it is typical for a client to also function as the server. These networks are called peer-to-peer networks.
- Peer-to-peer networking advantages: easy to set up, less complex, and lower cost.
- Disadvantages: no centralized administration, not as secure, not scalable, and slower performance.