Podcast
Questions and Answers
What does a LAN primarily cover?
What does a LAN primarily cover?
Which device is considered an intermediary in a network?
Which device is considered an intermediary in a network?
What is fault tolerance in network architecture?
What is fault tolerance in network architecture?
Which of the following is NOT a type of network component?
Which of the following is NOT a type of network component?
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What is a key characteristic of scalable networks?
What is a key characteristic of scalable networks?
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Which of the following represents an external threat to network security?
Which of the following represents an external threat to network security?
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What is BYOD in the context of networking?
What is BYOD in the context of networking?
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What is packet switching primarily used for in networks?
What is packet switching primarily used for in networks?
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Which component connects a device to a network?
Which component connects a device to a network?
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What is one of the priorities of Quality of Service (QoS) in networking?
What is one of the priorities of Quality of Service (QoS) in networking?
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Study Notes
Introduction to Networks
- Networks enable global communication, learning, work, and entertainment.
- Communication encompasses texting, social media, online collaboration, blogs, and gaming.
Types of Networks
- LAN (Local Area Network): Covers small areas (homes, offices, campuses). Features high-speed bandwidth and single administration.
- WAN (Wide Area Network): Spans large distances (cities, countries). Managed by multiple providers, with slower speeds than LANs.
- Internet: A global network connecting LANs and WANs, utilizing copper, fiber optic, and wireless mediums.
Network Components
- End Devices: Devices initiating or receiving messages (computers, phones).
- Intermediary Devices: Handle data flow (routers, switches, firewalls).
- Media Types: Copper cables, fiber optics, and wireless transmission.
Network Architectures
- Fault Tolerance: Redundant systems minimize failures.
- Scalability: Networks grow without performance loss.
- Quality of Service (QoS): Prioritizes data like video and voice.
- Security: Protects the network and data (confidentiality, integrity, availability).
Networking Trends
- BYOD (Bring Your Own Device): Employees use personal devices for work.
- Cloud Computing: Storing and accessing data over the internet (public, private, or hybrid clouds).
- Online Collaboration & Video Communication: Tools like Cisco WebEx simplify collaboration.
- Smart Homes: Technological integration into home appliances.
Security
- Threats (External): Viruses, hacking, denial-of-service (DoS) attacks.
- Threats (Internal): Accidental or intentional employee breaches.
- Solutions (Home Networks): Antivirus and firewalls.
- Solutions (Large Networks): Access control lists (ACLs), intrusion prevention systems (IPS), virtual private networks (VPNs).
Key Terms
- Topology: Network layout (physical or logical).
- NIC (Network Interface Card): Connects devices to the network.
- Packet Switching: Divides data into packets for enhanced fault tolerance.
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Description
Explore the fundamentals of networks including types, components, and architectures. Understand the differences between LAN, WAN, and the Internet, as well as the crucial devices and media involved in network communication. Ideal for learners seeking to comprehend how networks empower global connectivity.
