Introducción a las Redes de Área Local (LAN)

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Questions and Answers

¿Cuál es el propósito principal de las LANs?

Conectar dispositivos en una red de área amplia.

Facilitar la gestión de recursos en un entorno limitado.

Compartir recursos como impresoras y archivos de manera eficiente. (correct)

Proveer acceso a internet a través de satélites.

¿Cuál de las siguientes es una tecnología de red LAN comúnmente utilizada?

Dial-up.

Token Ring.

FTTH.

Ethernet. (correct)

¿Qué característica de las LANs permite que se adapten a un número creciente de dispositivos?

Uso de servidores dedicados.

Seguridad.

Coste efectivo.

Escalabilidad. (correct)

¿Cuál es la función de un 'Switch' en una LAN?

Dirigir datos solo al destinatario previsto. Signup and view all the answers

¿Qué tipo de conectividad se utiliza en las WLANs?

Ondas de radio. Signup and view all the answers

¿Qué dispositivo se utiliza para conectar múltiples dispositivos en una red en configuración de estrella?

Hub. Signup and view all the answers

¿Qué factor generalmente se considera como una ventaja de las LANs en comparación con las WANs?

Mayor velocidad de transmisión de datos. Signup and view all the answers

¿Cuál de los siguientes elementos no es un componente típico de una LAN?

Modem. Signup and view all the answers

¿Cuál es la principal ventaja de usar una red de área local (LAN)?

Optimizar la gestión de recursos Signup and view all the answers

¿Cuál de las siguientes opciones representa desventajas de utilizar una LAN?

Mayor coste de implementación Signup and view all the answers

¿Qué describe mejor la topología de anillo en una LAN?

Los dispositivos están conectados en un lazo cerrado Signup and view all the answers

El protocolo TCP/IP se utiliza principalmente para:

La transmisión de datos y el enrutamiento Signup and view all the answers

¿Cuál de las siguientes es una característica de una topología en malla?

Conexiones múltiples que aumentan la redundancia Signup and view all the answers

Una desventaja común de las LAN es:

Congestión de red potencial Signup and view all the answers

La implementación de una LAN requiere considerar:

Las necesidades de seguridad e implementación Signup and view all the answers

¿Cuál de las siguientes afirmaciones sobre el protocolo Ethernet es correcta?

Define cómo se transmite la data en redes Ethernet Signup and view all the answers

Study Notes

Introduction to Local Area Networks (LANs)

LANs are computer networks that interconnect devices within a limited geographical area, such as a home, office building, or school.
They provide high-speed data transmission between connected devices.
Primary purpose is to share resources like printers, files, and internet access efficiently.

Types of LANs

Ethernet: A prevalent wired networking technology based on the IEEE 802.3 standard. It uses coaxial cables, twisted-pair wires, or fiber optic cables. Data transmission speed varies depending on the Ethernet standard (e.g., 10BASE-T, 100BASE-TX, Gigabit Ethernet).
Wireless LANs (WLANs): Also known as Wi-Fi networks, these use radio waves to connect devices. They are commonly used in homes and offices for mobility and convenience. Standards like 802.11a/b/g/n/ac/ax define the frequency band and data rates.
Token Ring: A less common wired LAN technology that uses a token passing method for media access control. Bandwidth is shared among network connections.

Key Characteristics of LANs

Scalability: LANs can be designed to accommodate a growing number of devices.
High Speed: Data transmission speeds are typically much higher than those in wider area networks (WANs).
Cost Effective (generally): Compared to broader networks, LANs can be relatively inexpensive to implement and maintain for the area covered.
Ease of Management: Network administration tools facilitate centralized management of devices and resources.
Security: Devices on the LAN can be protected from unauthorized access.

Network Components

Network Interface Card (NIC): The hardware component enabling devices to communicate over the network.
Hub: A simple networking device that broadcasts data to all connected devices.
Switch: A more sophisticated device that directs data only to the intended recipient, improving network performance.
Router: A device that connects one network to another, such as a LAN to the internet. It manages routing and packet forwarding.
Access Point (AP): For wireless networks, the AP bridges wireless devices to the wired network.
Server: A powerful computer that provides shared resources to other network devices.

Network Topologies

Bus: All devices are connected to a single cable. Data is transmitted sequentially down the cable.
Star: Devices are connected to a central hub or switch. Data flows through the central point. The most common LAN topology due to its efficiency.
Ring: Devices are connected in a closed loop. Data travels around the ring in one direction.
Mesh: Each device can connect to multiple other devices. More complex than the other topologies, but provides more redundancy and fault tolerance.

Network Protocols

TCP/IP: (Transmission Control Protocol/Internet Protocol) The fundamental protocol suite for the internet and many LANs. It handles data transmission and routing.
Ethernet Protocol: The specific protocol governing Ethernet networks. Defines how data is transmitted over the wire (or wirelessly).
Other protocols: Specific protocols might also be used for file sharing (e.g., SMB/CIFS), printing, or application-specific communication.

Advantages of using a LAN

Resource Sharing: Enables easy access to printers, files, and other resources.
Centralized Management: Administrators can control and manage network resources easily.
Improved Communication: Facilitates quicker and easier communication between employees or users.
Increased Productivity: Streamlined workflows and data sharing often improve overall work efficiency.
Network Security: LANs offer stronger security controls to protect from unauthorized access compared to unconnected devices.
Cost Savings: Reduced expenses when compared to separate systems managing individual devices.

Disadvantages of using a LAN

Security Risks: If security measures are not sufficient, unauthorized users might access data or resources.
Network Downtime: If a server or critical component fails, the entire network might experience downtime.
Potential Cost of Implementation: Establishing a complex LAN with many devices might involve significant initial investment.
Network congestion (potential): Heavy usage can lead to slowdowns if appropriate network capacity isn't factored in.
Potential for malware and viruses: If not protected, a network exposes connected devices to security issues.

Key Considerations When Implementing a LAN

Network Size: The number and type of devices to be connected.
Data Transmission Requirements: The speed and volume of data exchanged.
Security Needs: The importance of maintaining confidentiality and control.
Budget: The financial implications of implementation.
Accessibility and Usability: How user-friendly will the LAN be.
Future Growth and Adaptability: The possibility of adding more devices in the future.

Conclusion

Local Area Networks are crucial for connecting devices within a limited space.
Different technologies exist to meet varied needs.
Understanding characteristics, components, and considerations associated with LANs is essential to effectively implement and manage a local network.

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Description

Esta prueba evaluará tus conocimientos sobre las Redes de Área Local (LAN), incluyendo sus tipos y tecnologías como Ethernet y WLAN. Aprende sobre la interconexión de dispositivos y la transmisión de datos en entornos limitados. Prepárate para compartir eficazmente recursos como impresoras y acceso a internet.