Podcast
Questions and Answers
What type of media uses glass or plastic fibers to transmit data?
What type of media uses glass or plastic fibers to transmit data?
Which of the following factors is NOT a criterion for choosing network media?
Which of the following factors is NOT a criterion for choosing network media?
What is a function of a Network Interface Card (NIC)?
What is a function of a Network Interface Card (NIC)?
What do physical topology diagrams illustrate?
What do physical topology diagrams illustrate?
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What do logical topology diagrams primarily illustrate?
What do logical topology diagrams primarily illustrate?
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What is an example of an extranet?
What is an example of an extranet?
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Which of the following is a common connection option for home users to access the internet?
Which of the following is a common connection option for home users to access the internet?
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What is a characteristic feature of Asymmetrical DSL (ADSL)?
What is a characteristic feature of Asymmetrical DSL (ADSL)?
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Which type of internet connection requires a clear line of sight to the satellite?
Which type of internet connection requires a clear line of sight to the satellite?
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Which connection option allows internet access wherever a cellular signal is available?
Which connection option allows internet access wherever a cellular signal is available?
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Which of the following services is typically leveraged by organizations for fast internet access?
Which of the following services is typically leveraged by organizations for fast internet access?
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What is a limitation of cellular internet access?
What is a limitation of cellular internet access?
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What does data confidentiality ensure?
What does data confidentiality ensure?
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What is a key benefit of Bring Your Own Device (BYOD) policies?
What is a key benefit of Bring Your Own Device (BYOD) policies?
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Which of the following describes collaboration?
Which of the following describes collaboration?
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What is a primary use of Cisco WebEx Teams?
What is a primary use of Cisco WebEx Teams?
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What does data availability assure users?
What does data availability assure users?
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What is a disadvantage of using a dial-up modem connection?
What is a disadvantage of using a dial-up modem connection?
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What can be said about dedicated leased lines?
What can be said about dedicated leased lines?
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Which connection option is also known as Ethernet WAN?
Which connection option is also known as Ethernet WAN?
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What is a common feature of Business DSL?
What is a common feature of Business DSL?
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What distinguishes converged networks from traditional separate networks?
What distinguishes converged networks from traditional separate networks?
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Which statement about traditional separate networks is true?
Which statement about traditional separate networks is true?
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What issue might cause your internet connection to go down during online work?
What issue might cause your internet connection to go down during online work?
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What is a primary characteristic of traditional networks built thirty years ago?
What is a primary characteristic of traditional networks built thirty years ago?
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Study Notes
Network Media Types
- Modern networks interconnect devices using three main media: metal wires (electrical impulses), fiber-optic cables (pulses of light), and wireless transmission (modulated electromagnetic waves).
- Each media type has specific characteristics affecting its suitability for different environments and applications.
Criteria for Choosing Network Media
- Maximum distance capability for signal transmission.
- Environmental conditions for media installation.
- Required data transmission speed and volume.
- Cost considerations for media and installation.
Topology Diagrams
- Topology diagrams visualize device connections within a network, crucial for understanding network configuration.
- Essential for network documentation, comprising physical and logical representations.
Types of Topology Diagrams
- Physical Topology Diagrams: Show the physical layout and device locations.
- Logical Topology Diagrams: Illustrate device interconnections, ports, and addressing schemes.
Extranets Examples
- Companies providing supplier access.
- Hospitals offering booking systems for doctors.
- Educational institutions sharing budget and personnel data with schools.
Internet Connection Methods
- Home users and small offices often access the internet via ISPs using varying connection types:
- Broadband cable, DSL, wireless WANs, mobile services.
- Business networks require rapid connections for services like IP phones and video conferencing.
Connection Types
- Cable: High bandwidth; runs on cables used for television.
- DSL: Uses telephone lines; ADSL commonly offers faster downloads than uploads.
- Cellular: Connects via cellular networks; limited performance based on network capabilities.
- Satellite: Provides access in remote areas; requires a clear line of sight.
- Dial-up: Inexpensive but low bandwidth; suitable for basic access.
Corporate Connection Options
- Businesses often require higher and dedicated bandwidth options like:
- Dedicated leased lines for private networking.
- Metro Ethernet for extended LAN technologies.
- SDSL for equal upload and download speeds.
Network Evolution
- Traditional separate networks faced limitations in interoperability; new converged networks support multiple services (data, voice, video) on a single infrastructure.
- Converged networks utilize uniform rules and standards.
Data Security Principles
- Confidentiality: Ensures data is accessible only to authorized recipients.
- Integrity: Maintains accuracy of data in transit.
- Availability: Guarantees reliable access to data services for authorized users.
Networking Trends
- Bring Your Own Device (BYOD): Allows personal devices to connect to business networks, fostering flexibility and collaboration.
- Online collaboration: Tools like Cisco WebEx enable instant communication and teamwork among users.
- Video communications: Essential for remote collaboration and engagement.
Wireless Internet Service Provider (WISP)
- Provides wireless internet access, especially in rural areas lacking cable or DSL.
- Subscribers typically attach antennas or dishes to existing structures for network connection.
Wireless Broadband Services
- Competes with traditional DSL and cable by utilizing cellular technology for home and small business internet access.
Network Security Threats
- Security remains a priority due to threats from external sources, including:
- Viruses, worms, and Trojan horses: Malicious software affecting devices.
- Spyware and adware: Software that installs on devices without user consent, compromising security.
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Description
This quiz explores the three primary types of media used in modern networking: metal wires, fiber-optic cables, and wireless transmission. Participants will learn about the encoding methods and criteria for selecting network media, enhancing their understanding of networking fundamentals.
