Podcast
Questions and Answers
What type of cables use electrical impulses for communication?
What type of cables use electrical impulses for communication?
Which type of diagram shows the physical arrangement of devices and cables in a network?
Which type of diagram shows the physical arrangement of devices and cables in a network?
Which statement correctly describes wireless transmission?
Which statement correctly describes wireless transmission?
In networking terminology, what do the terms 'port' and 'interface' refer to?
In networking terminology, what do the terms 'port' and 'interface' refer to?
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What is the main purpose of network diagrams?
What is the main purpose of network diagrams?
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Which of the following best describes the role of hosts in a network?
Which of the following best describes the role of hosts in a network?
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Which of the following is NOT a type of network mentioned?
Which of the following is NOT a type of network mentioned?
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How do trends like BYOD and cloud computing influence networking?
How do trends like BYOD and cloud computing influence networking?
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What is typically true about Small Office/Home Office (SOHO) networks?
What is typically true about Small Office/Home Office (SOHO) networks?
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What is a characteristic of reliable networks?
What is a characteristic of reliable networks?
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Which of the following best describes the World Wide Network category?
Which of the following best describes the World Wide Network category?
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What is the importance of understanding network topologies?
What is the importance of understanding network topologies?
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Which of the following statements reflects how networks connect us?
Which of the following statements reflects how networks connect us?
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Identifying basic security threats in networks is crucial because:
Identifying basic security threats in networks is crucial because:
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What is a common type of network characteristic people should be aware of?
What is a common type of network characteristic people should be aware of?
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Which of the following describes the impact of networks on daily life?
Which of the following describes the impact of networks on daily life?
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What is the primary purpose of a Local Area Network (LAN)?
What is the primary purpose of a Local Area Network (LAN)?
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Which of the following statements about Wide Area Networks (WANs) is correct?
Which of the following statements about Wide Area Networks (WANs) is correct?
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What best describes the Internet?
What best describes the Internet?
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What is the function of an extranet?
What is the function of an extranet?
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Which organization is NOT associated with maintaining the structure of the Internet?
Which organization is NOT associated with maintaining the structure of the Internet?
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What is one of the main characteristics a reliable network architecture must address?
What is one of the main characteristics a reliable network architecture must address?
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What distinguishes an intranet from the Internet?
What distinguishes an intranet from the Internet?
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Which technique is used in fault-tolerant networks to provide redundancy?
Which technique is used in fault-tolerant networks to provide redundancy?
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How do LANs connect with each other?
How do LANs connect with each other?
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Which of the following is NOT a feature of WANs?
Which of the following is NOT a feature of WANs?
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What does a scalable network capability allow for?
What does a scalable network capability allow for?
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What is the primary mechanism to ensure reliable delivery of content in a network?
What is the primary mechanism to ensure reliable delivery of content in a network?
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What impact does QoS have on voice and video transmissions?
What impact does QoS have on voice and video transmissions?
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What is the main difference between packet-switched and circuit-switched networks in terms of redundancy?
What is the main difference between packet-switched and circuit-switched networks in terms of redundancy?
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What is one consequence of not configuring Quality of Service (QoS) properly?
What is one consequence of not configuring Quality of Service (QoS) properly?
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Why is following accepted standards and protocols important in network design?
Why is following accepted standards and protocols important in network design?
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What does BYOD stand for in the context of technology?
What does BYOD stand for in the context of technology?
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Which of the following is NOT an example of a device used in BYOD?
Which of the following is NOT an example of a device used in BYOD?
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Which collaboration tool is mentioned as a way to connect and interact?
Which collaboration tool is mentioned as a way to connect and interact?
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What is a critical requirement for effective collaboration according to the content?
What is a critical requirement for effective collaboration according to the content?
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Which statement accurately describes cloud computing?
Which statement accurately describes cloud computing?
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What is the purpose of Cisco TelePresence?
What is the purpose of Cisco TelePresence?
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Why might smaller companies choose to use cloud computing?
Why might smaller companies choose to use cloud computing?
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Which of the following is considered a priority for businesses and education regarding collaboration?
Which of the following is considered a priority for businesses and education regarding collaboration?
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What primary knowledge does the CCNA certification demonstrate?
What primary knowledge does the CCNA certification demonstrate?
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Which new technological focus areas are included in the CCNA certification?
Which new technological focus areas are included in the CCNA certification?
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What is the purpose of specialist certifications in the Cisco certification program?
What is the purpose of specialist certifications in the Cisco certification program?
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What is the function of the Talent Bridge Matching Engine?
What is the function of the Talent Bridge Matching Engine?
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What benefit do networking job seekers gain by visiting netacad.com?
What benefit do networking job seekers gain by visiting netacad.com?
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How are hosts classified in a network?
How are hosts classified in a network?
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What is one of the purposes of diagrams in networking?
What is one of the purposes of diagrams in networking?
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What is highlighted as necessary for IT professionals regarding their skills?
What is highlighted as necessary for IT professionals regarding their skills?
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Study Notes
Module 1: Networking Today
- This module introduces networks in modern technologies.
- Communication is almost as important as basic necessities.
- Networks connect the world like never before.
- Networks have advanced greatly in modern times.
Module Objectives
- Explain advances in modern technologies.
Topic Titles and Objectives
- Networks Affect Our Lives: Explains how networks affect daily life.
- Network Components: Explains how host and network devices are used.
- Network Representations and Topologies: Explains network representations and use in topologies.
- Common Types of Networks: Compares characteristics of common network types.
- Internet Connections: Explains how LANs and WANs connect to the internet.
- Reliable Networks: Describes four basic requirements for a reliable network.
- Network Trends: Explains how trends like BYOD, collaboration, video, and cloud change interactions.
- Network Security: Identifies security threats and solutions for all networks.
- The IT Professional: Explains employment opportunities in the networking field.
1.1 Networks Affect Our Lives
- Networks impact daily life significantly.
1.2 Network Components - Host Roles
- Computers on a network are called hosts or end devices.
- Servers provide information to end devices.
- Servers include email servers, web servers and file servers.
- Clients request information from servers.
- Web page from a web server.
- Email from an email server.
- Types of Servers:
- Email: Runs email server software; clients use client software to access email.
- Web: Runs web server software; clients use browser software to access web pages.
- File: Stores corporate and user files; client devices access these files.
- Peer-to-Peer Networks:
- Devices can be both clients and servers.
- Suitable for small networks.
- Advantages: Easy setup, less complex, lower cost.
- Disadvantages: No centralized administration, not as secure, not scalable, slower performance.
1.2 Network Components - End Devices
- End devices originate and receive messages.
- Data flows through the network between end devices.
- Data can take alternate routes throughout the network.
1.2 Network Components - Intermediary Devices
- Intermediary devices interconnect end devices.
- Examples: Switches, wireless access points, routers, and firewalls.
- Management of data as it flows through the network:
- Regenerate and retransmit data signals.
- Maintain information about paths.
- Notify other devices of errors and failures.
1.3 Network Representations and Topologies
- Network diagrams (topology diagrams) use symbols to represent devices in a network.
- Important terms:
- Network Interface Card (NIC)
- Physical Port
- Interface
- Topology Diagrams
- Illustrate physical locations of intermediary devices and cable installation.
- Illustrate devices, ports, and addressing scheme.
1.4 Common Types of Networks
- Network infrastructures vary greatly in terms of:
- Area covered
- Number of users
- Services available
- Responsibility
- Common types of networks:
- Small Home: Connects a few computers to each other and the internet.
- SOHO: Enables computers in a home or remote office to connect to a corporate network.
- Medium/Large: Networks with hundreds or thousands of interconnected computers.
- World Wide: Connects hundreds of millions of computers globally (e.g., the internet).
1.5 Internet Connections
- The internet is a collection of interconnected LANs and WANs.
- WANs use copper wires, fiber optic cables, and wireless transmissions to connect LANs.
- Internet is not owned by any individual or group.
- Organizations manage structure on the internet:
- IETF
- ICANN
- IAB
1.6 Reliable Networks
- Network Architecture: Refers to the technologies that support the infrastructure for moving data.
- Reliable Networks: Have four basic characteristics
- Fault Tolerance: Limits the impact of a failure by using multiple paths.
- Packet switching splits traffic into packets, allowing each packet to take a different route.
- Scalability: Can expand quickly and easily to support new users and applications without impacting existing users.
- Network designers follow accepted standards and protocols.
- Quality of Service (QoS): Ensures reliable delivery of content.
- QoS manages priorities for data and voice traffic.
- Security: Protects the network from unauthorized access.
- Implemented through multiple layers.
1.7 Network Trends
- Network trends affect organizations and consumers.
- BYOD: Users using their own devices.
- Online Collaboration: Tools (e.g., Cisco Webex) for users to instantly connect.
- Video Communications: Video calls, video conferencing, and collaboration tools.
- Cloud Computing: Storing and accessing data and applications on servers over the internet.
- Allows companies to deliver services to any device.
1.8 Network Security
- Network security is an integral part for any network.
- The network should address and protect the network environment.
- Goal(s):
- Confidentiality: Only intended recipients can access the data.
- Integrity: Ensure data hasn't been altered during transmission.
- Availability: Ensure timely and reliable access for authorized users.
1.9 The IT Professional
- Cisco Certified Network Associate (CCNA) Certification:
- Demonstrates knowledge of foundational networking technologies.
- New CCNA Focus:
- IP foundations and security topics, wireless, virtualization, automation, and network programmability.
- DevNet Certifications: Associate, Specialist, and Professional levels validate skills and software development.
- Networking Jobs: Available at www.netacad.com
1.10 Module Practice and Quiz
- Key concepts learned in this module.
- Networks for communication and participation.
- Diagram of networks.
- Two main network types: LANs and WANs
- SOHO and Business internet connections.
- Network Architecture characteristics (FT, Scalability, QoS, Security).
- Recent Trends impacting Networks (BYOD, Collaboration, video, cloud computing).
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Description
This quiz covers the key concepts from Module 1: Networking Today. It explores how modern networks influence our daily lives, the components that make up networks, and the various types of networks in use today. Test your understanding of network structures, security, and contemporary trends in networking.
