Introduction to Networks
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Questions and Answers

Which characteristic of a reliable network ensures that performance does not degrade as the network expands?

  • Quality of Service (QoS)
  • Fault Tolerance
  • Security
  • Scalability (correct)

What is the main function of intermediary devices in a network?

  • Connect devices to Wi-Fi networks
  • Store and retrieve user data
  • Provide end users with direct internet access
  • Manage the data flow between different networks (correct)

Which type of network connects multiple LANs over large geographic regions?

  • Wide Area Network (WAN) (correct)
  • Wireless Local Area Network (WLAN)
  • Personal Area Network (PAN)
  • Local Area Network (LAN)

Which of the following is a primary security measure for large networks?

<p>Access control lists (ACLs) (B)</p> Signup and view all the answers

Which media type is NOT typically associated with network connections?

<p>Plastic tubing (C)</p> Signup and view all the answers

What does BYOD stand for in the context of networking trends?

<p>Bring Your Own Device (C)</p> Signup and view all the answers

In network security, what type of threats can come from within an organization?

<p>Internal breaches (A)</p> Signup and view all the answers

What is the term used for the layout of a network, whether physical or logical?

<p>Topology (C)</p> Signup and view all the answers

Which technology integration is often included in smart homes?

<p>Voice-activated appliances (A)</p> Signup and view all the answers

What method do networks use to enhance fault tolerance by splitting data into smaller pieces?

<p>Packet Switching (B)</p> Signup and view all the answers

LANs typically cover a wide geographic area such as cities or countries.

<p>False (B)</p> Signup and view all the answers

The Internet is a global network that solely consists of WANs.

<p>False (B)</p> Signup and view all the answers

Quality of Service (QoS) ensures that all types of data are treated equally in a network.

<p>False (B)</p> Signup and view all the answers

Packet switching improves security in a network by creating larger data segments.

<p>False (B)</p> Signup and view all the answers

BYOD refers to the practice of using personal devices for professional purposes in a networked environment.

<p>True (A)</p> Signup and view all the answers

Intermediary devices like routers are essential for managing data flow in networks.

<p>True (A)</p> Signup and view all the answers

External threats to network security include accidental data breaches by employees.

<p>False (B)</p> Signup and view all the answers

Fault tolerance in a network refers to the ability to sustain performance despite component failures.

<p>True (A)</p> Signup and view all the answers

Fiber optic cables are an example of wireless media used in networking.

<p>False (B)</p> Signup and view all the answers

Scalability in a network implies the ability to grow without loss in performance.

<p>True (A)</p> Signup and view all the answers

Flashcards

LAN

A local area network covering a small area like a house, office, or campus, with high speed and single administration.

WAN

A wide area network connecting LANs over large areas (cities, countries), managed by multiple providers with slower speeds.

Internet

A global network connecting LANs and WANs using various media like copper, fiber, and wireless.

Network Components (End Devices)

Devices that send or receive messages on a network (e.g., computers, phones).

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Network Components (Intermediary Devices)

Devices that manage data flow (e.g., routers, switches, firewalls).

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Fault Tolerance

Redundancy in a network to prevent failures by having multiple paths for data.

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Scalability

Ability of a network to grow without losing performance.

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QoS (Quality of Service)

Prioritizing network traffic (like video and voice).

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Network Security Threats (External)

Threats coming from outside the network (viruses, hacking, DoS attacks).

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Network Security Solutions (Home Networks)

Antivirus and firewalls to protect home networks against external attacks.

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What is a network?

A network is a collection of devices that are connected together to share resources and communicate information. These devices can include computers, printers, servers, and mobile phones.

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What are the types of networks?

There are three main types: LAN (Local Area Network) for small areas, WAN (Wide Area Network) for large areas, and the Internet, a global connection of LANs and WANs.

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What are end devices?

End devices are the devices that you use to interact with a network. They are the starting and ending points for data transmission.

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What are intermediary devices?

Intermediary devices help manage the flow of data between end devices. They act like traffic controllers, directing data where it needs to go.

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What are media types?

Media types are the physical pathways that data travels through. They can be copper cables, fiber optic cables, or wireless signals.

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What is fault tolerance?

Fault tolerance is the ability of a network to continue operating even if some parts fail. This is achieved by having multiple paths or backup systems.

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What is scalability?

Scalability is the ability of a network to grow and handle increasing amounts of traffic without losing performance. It can handle more users and devices.

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What is quality of service (QoS)?

QoS is the ability to prioritize different types of traffic. This ensures that important data like video calls or online games have enough bandwidth to function smoothly.

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What are external network threats?

External threats come from outside the network. Examples include viruses, hacking attempts, and denial-of-service attacks.

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What are common home network security solutions?

Antivirus software protects against malicious programs and firewalls act as a barrier against unauthorized access.

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Study Notes

Introduction to Networks

  • Networks enable global communication, collaboration, and access to information for learning, work, and entertainment.
  • Communication methods include texting, social media, online collaboration platforms, blogs, and gaming.

Types of Networks

  • LAN (Local Area Network): Covers a small area (home, office, campus) with high-speed bandwidth and single network administration.
  • WAN (Wide Area Network): Spans large geographic areas (cities, countries) and is managed by multiple service providers with potentially slower speeds.
  • Internet: A global network connecting numerous LANs and WANs using various types of media (copper, fiber optic, wireless).

Network Components

  • End Devices: Devices that send or receive messages (computers, phones, tablets).
  • Intermediary Devices: Devices that manage data flow (routers, switches, firewalls).
  • Media Types: Methods of communication (copper cables, fiber optics, wireless).

Network Architectures

  • Fault Tolerance: Redundancy in the network to minimize failures.
  • Scalability: The network's ability to grow without performance decline.
  • Quality of Service (QoS): Prioritizing important data types (like video and voice).
  • Security: Protecting the network and its data (confidentiality, integrity, availability).
  • BYOD (Bring Your Own Device): Employees using personal devices to access company resources.
  • Cloud Computing: Storing and accessing data over the internet (public, private, and hybrid clouds).
  • Online Collaboration and Video Communication: Tools such as Cisco WebEx and TelePresence.
  • Smart Homes: Integrating technology into household appliances.

Security

  • Threats:
    • External: Viruses, hacking, denial-of-service (DoS) attacks.
    • Internal: Accidental or intentional breaches by employees.
  • Solutions:
    • Home Networks: Antivirus software, firewalls.
    • Large Networks: Access control lists (ACLs), intrusion prevention systems (IPS), virtual private networks (VPNs).

Key Network Terms

  • Topology: Network's physical or logical structure.
  • NIC (Network Interface Card): Connects a device to the network.
  • Packet Switching: Dividing data into packets to enhance fault tolerance.

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Description

This quiz covers the fundamental concepts of networks including types, components, and communication methods. It examines Local Area Networks (LAN), Wide Area Networks (WAN), and the Internet, along with their respective roles in global communication. Test your understanding of how devices interconnect and communicate.

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