Networking Basics: Module 1

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Questions and Answers

What is an end device

An end device is where a message originates from or where it is received.

What is an intermediary device? Give examples

Examples include switches and routers.

What is a server?

They can regenerate and retransmit data signals.

List the 3 media types (material, method of transmission, type of wire)

Metal wires, fiber-optic cables, and wireless transmission. Signup and view all the answers

What is the difference between physical and logical topology diagrams?

Physical topology diagrams show the physical location of devices, while logical topology diagrams illustrate the addressing scheme. Signup and view all the answers

How do wireless transmissions work as a network media?

Wireless transmissions use modulation of specific frequencies of electromagnetic waves. Signup and view all the answers

What are the two main types of network security?

Network infrastructure security and information security. Signup and view all the answers

Explain what is peer-to-peer network , include the disadvantages and advantages

Confidentiality, integrity, and availability. Signup and view all the answers

Explain the CIA

It implies that only intended recipients can read the transmitted data. Signup and view all the answers

What are some recent trends affecting organizations and consumers?

BYOD, online collaboration, video communications, and cloud computing. Signup and view all the answers

In what scenarios are Peer-to-Peer networks most effectively utilized?

They are most effective for simple tasks such as file transfers and printer sharing in small networks. Signup and view all the answers

Define an intranet and its primary purpose.

An intranet is a private network accessible only to an organization's members, meant for internal communication and data sharing. Signup and view all the answers

What is the primary function of an extranet?

An extranet allows secure access to a company's internal network for external authorized users. Signup and view all the answers

What problem did converged networks address compared to traditional networks?

Converged networks integrate multiple services like data, voice, and video over a single infrastructure. Signup and view all the answers

List the main types of services that converged data networks can carry.

Data, voice, and video. Signup and view all the answers

Explain Fault tolerance

To limit the impact of a failure by ensuring multiple paths are available. Signup and view all the answers

Explain Scalability, network security and Quality of Service QoS

It allows the network to expand easily without affecting the performance for existing users. Signup and view all the answers

Why is Quality of Service (QoS) important for services like voice and video?

QoS ensures reliable delivery of content, maintaining consistent performance even during high demand. Signup and view all the answers

In the context of network services, what could cause interruptions in live video transmissions?

A higher demand for bandwidth than available and the lack of QoS configuration. Signup and view all the answers

What is one major drawback of circuit-switched networks compared to packet-switched networks?

Circuit-switched networks establish dedicated circuits, which cannot provide flexible routing. Signup and view all the answers

Explain what LANs and WANs are

A LAN spans a small geographical area, while a WAN covers a wide geographical area. Signup and view all the answers

How do LANs and WANs work together to form the internet?

LANs are connected to each other using WANs, which create a global collection of networks. Signup and view all the answers

What causes network infrastructures to vary?

Characteristics include the size of the area covered, number of users connected, types of available services, and area of responsibility. Signup and view all the answers

What types of cables may WANs use for transmission?

WANs may use copper wires, fiber optic cables, and wireless transmissions. Signup and view all the answers

In terms of administration, how are LANs and WANs typically managed?

LANs are usually administered by a single organization or individual, while WANs are typically administered by one or more service providers. Signup and view all the answers

Study Notes

Module 1: Networking Today

Networking is essential, comparable to basic needs like air, water, food, and shelter.
Modern networks connect people globally like never before.
Networks affect daily life by enabling communication and connection.

Networking Today: No Boundaries

Networks transcend geographical limitations.
Networks facilitate global communities.
The modern network is a human network uniting individuals.

Network Components: Host Roles

Every computer on a network is a host or end device.
Servers provide information to end devices.
Email servers provide email services.
Web servers provide web page access.
File servers store files.
Clients request and retrieve information from servers.

Network Components: Peer-to-Peer

A device can be both a client and a server.
This design is best for small networks.
Advantages include ease of setup, simplicity, and lower cost.
Drawbacks include lack of centralized administration, security concerns, and limited scalability.
Suitable for simple tasks like file sharing and printer sharing.

Network Components: End Devices

End devices initiate and receive data.
Data travels through the network from a sending end device to a receiving end device.
LANs (Local Area Networks) are part of the complete network.
Internetworks can allow alternate routes between connected LANs.

Network Components: Intermediary Devices

Intermediary devices connect end devices.
Examples include switches, wireless access points, routers, and firewalls.
Intermediary devices manage data flow, including regenerating and retransmitting signals and maintaining network pathways.
They notify other devices about errors or communication failures.

Network Components: Network Media

Data travels across a network through a medium, allowing messages to pass from source to destination.
Types of Media include metal wires(copper), glass or plastic fibers(fiber optic), and wireless.

Network Representations and Topologies

Network diagrams, also known as topology diagrams, use symbols to represent network devices.
Terms like physical port, network interface card, and interface are commonly used.
Physical topology diagrams show the physical arrangement of devices and cable installations.
Logical topology diagrams depict the devices, ports, and addressing scheme of the network.

Common Types of Networks

Networks vary in size, user count, services, and responsibility areas.
Network types include small home networks, small office/home office (SOHO), medium/large networks, and wide area networks (WANs).
WANs connect many networks.
LANs interconnect devices in a limited physical area.

Common Types of Networks: LANs and WANs

LAN covers a small geographical area, usually managed by a single organization.
WANs span larger geographical areas, often maintained by multiple service providers.
WANs typically connect several LANs.

Common Types of Networks: The Internet

The internet is a collection of interconnected LANs and WANs worldwide.
LANs and WANs use copper, fiber optic, and wireless transmission.
The internet isn't owned by any single entity. Organizations like the IETF, ICANN, and IAB help maintain internet structure.

Common Types of Networks: Intranets and Extranets

Intranets are private LAN/WAN collections internal to a company. Access is restricted to authorized members.
Extranets allow secure access to an organization's network from outside individuals or other organizations.

Internet Connections: The Converging Network

Before converged networks, organizations used separate networks for telephone, video, and data.
Each technology used a unique set of rules and standards.

Internet Connections: The Converging Network (Cont.)

Converged networks allow data, voice, and video to share the same network infrastructure.
This uses the same rules and standards.

Reliable Networks

Quality of Service (QoS), fault tolerance, scale, and security are vital qualities in a robust network.
Scalability lets networks accommodate more users and applications without compromising performance.
Fault tolerance reduces the impact of failures by using alternative paths.
Security protects the network infrastructure from unauthorized access or data breaches.

Network Trends

Recent trends affect the role of networks, necessitating ongoing adjustments.
Several recent trends that impact networks, include bring your own device (BYOD), online collaboration, video communications, and cloud computing.
These trends constantly impact and change networks allowing flexibility to support future technologies

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Description

Explore the foundational concepts of networking in today's world with Module 1. This quiz covers the importance of networks, their global reach, and essential components such as host roles and peer-to-peer setups. Test your knowledge and understand how modern networks connect us all.