CCNA Completo | Lección 1 | Componentes de redes y Pilas de Protocolos

Introduction to CCNA Series

Overview of the Course

• Welcome to Pablo Hidalgo's Tutorials, starting the complete CCNA series with Lesson 1: Network Components and Protocol Stacks.

• This video serves as a foundational entry into data networking, covering material necessary for Cisco CCNA certification and practical skills for network technicians.

Understanding Cisco and CCNA

• Cisco is a leading manufacturer of data networking equipment.

• The CCNA certification focuses on network technician-level skills, emphasizing configuration and maintenance of Cisco devices. To earn this certification, one must pass exam 200-301 at a Pearson Vue testing center.

Network Components

Hosts and Servers

• Any computer connected to the network that participates in communications is classified as a Host or terminal device.

• Clients run software to request and display information from servers, which are computers providing services like email and web pages.

Intermediate Devices

• Intermediate devices connect terminal devices to the network, ensuring data flows correctly. They use addresses to determine message paths.

• Examples include Layer 2 switches, multilayer switches, routers, and wireless routers.

Transmission Media

Types of Transmission Media

• Modern data networks primarily utilize three types of transmission media:

• Copper Cables: Data encoded through electrical impulses.

• Fiber Optics: Data encoded via light pulses.

• Wireless: Data transmitted by modulating electromagnetic waves traveling through space.

Network Infrastructure Documentation

Topology Diagrams

• Network infrastructure is documented using symbols representing devices in various diagrams showing interconnections.

• Two main types of topology diagrams exist:

• Physical Diagrams: Show actual physical connections between devices.

• Logical Diagrams: Illustrate how data flows within the network regardless of physical layout.

Communication Elements

Key Elements in Communication

• All communication methods share three common elements:

• Source/Emitter: The device sending the message.

• Channel: The medium transmitting the message from source to destination.

• Destination/Receiver: The device receiving and interpreting the message.

Protocols in Networking

Importance of Protocols

• Devices must establish rules (protocols) governing communication over a data network.

• Protocol suites or stacks consist of multiple protocols working together for effective communication. These can be defined by standard organizations or developed by manufacturers.

Upcoming Topics