Questions and Answers
What characteristic of network architecture ensures that a failure affects the fewest devices possible?
Which mechanism is primarily used to ensure the reliable delivery of content in a network?
In a fault tolerant network, what is primarily implemented to provide redundancy?
Which characteristic allows a network to easily support additional users and applications without degrading performance?
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What typically causes interruptions in voice and video services during transmission?
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Which of the following is NOT one of the basic characteristics that network architectures must address?
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What allows each packet in a packet-switched network to potentially take different paths to the destination?
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Implementing accepted standards and protocols primarily affects which characteristic of network architecture?
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What is a primary function of intermediary network devices?
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Which of the following best describes the role of network media?
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What type of topology diagram illustrates the physical location of devices?
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Which medium uses electrical impulses for communication?
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Which statement is true regarding the terms 'port' and 'interface'?
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What does a logical topology diagram illustrate?
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Which of the following media types uses pulses of light?
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What is one of the capabilities of a router as an intermediary device?
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What is the main characteristic of a Local Area Network (LAN)?
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Which of the following best describes a Wide Area Network (WAN)?
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Which network type typically provides slower speed links?
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What distinguishes the Internet from other types of networks?
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Which type of network connects computers to a corporate network from home?
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What is a key feature of a Medium to Large Network?
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Which medium is NOT commonly used by WANs for interconnection?
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Which of the following statements is true regarding the administration of LANs and WANs?
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What is the primary purpose of an intranet?
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Which organization is responsible for coordinating internet protocols and standards?
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What type of internet connection is most commonly used by home users?
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What is a key characteristic of an extranet?
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Which internet access technology is described as 'always on' with high bandwidth?
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What challenge do organizations face that influences their choice of internet connections?
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Which group is NOT one of the organizations established to maintain structure on the internet?
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Which service is typically NOT associated with business-class interconnections?
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What is one of the main benefits of DSL as an internet connection?
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Which internet connection type is primarily advantageous in rural areas lacking Internet Service Providers?
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What purpose do leased lines serve in corporate business connections?
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How do converged networks differ from traditional separate networks?
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Which of the following is a feature of Business DSL?
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What is a common characteristic of converged networks?
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What limitation does dial-up internet present as a connection option?
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What does Ethernet technology do in the context of internet connections?
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Study Notes
Reliable Networks Overview
- Network architecture supports data transfer, emphasizing fault tolerance, scalability, Quality of Service (QoS), and security.
Fault Tolerance
- Fault-tolerant networks minimize failure impact by ensuring multiple paths for data transmission.
- Implementing packet-switching allows data to be sent in packets, potentially taking different routes, unlike circuit-switched networks which use dedicated circuits.
Scalability
- Scalable networks can adapt quickly to increased users and applications without degrading service performance.
- Standards and protocols followed by designers facilitate scalability.
Quality of Service (QoS)
- QoS ensures reliable delivery of bandwidth-sensitive content like voice and video, preventing interruptions.
- A QoS policy enables routers to optimize data flow management, particularly during high-demand periods.
Intermediary Network Devices
- Intermediary devices connect end devices, including switches, routers, and firewalls.
- Their functions include regenerating data signals, maintaining pathway information, and notifying about errors or communication issues.
Network Media
- Network communication occurs over various media types:
- Metal wires: Use electrical impulses for signal transmission.
- Fiber optic cables: Utilize light pulses for data transfer.
- Wireless: Employ electromagnetic wave modulation for connectivity.
Network Representations and Topologies
- Topology diagrams represent network layouts symbolically, encompassing Network Interface Cards (NICs), physical ports, and interfaces.
- Physical topology diagrams show device placements, while logical topology diagrams outline device connections and addressing.
Common Types of Networks
- Networks vary in size and purpose:
- Small Home Networks: Connect limited computers and the internet.
- Small Office/Home Office (SOHO): Enables individual or remote office connectivity.
- Medium to Large Networks: Interconnect numerous devices across multiple locations.
- World Wide Networks: Encompasses extensive global interconnection, primarily represented by the internet.
LANs and WANs
- Local Area Network (LAN): Covers small geographical areas, connected by a single organization.
- Wide Area Network (WAN): Spans large geographic distances, often connecting multiple LANs.
Internet Structure
- The internet is a vast network of interconnected LANs and WANs, employing multiple connection methods including copper wires, fiber optics, and wireless technologies.
- Key organizations such as IETF, ICANN, and IAB maintain internet structure and governance.
Intranets and Extranets
- An intranet is a private network accessible only to authorized organization members.
- Extranets allow secure access to specific external users for data collaboration.
Internet Connections
- Connection methods include broadband cable, DSL, and wireless for homes and small offices, as well as leased lines and Metro Ethernet for businesses.
Business Internet Connections
- Corporate connections often require higher bandwidth and dedicated services like leased lines and Ethernet WAN.
- Business DSL offers varied formats, including Symmetric DSL for balanced upstream and downstream speeds.
Converging Networks
- Before convergence, separate networks existed for voice, data, and video, requiring distinct cabling and technologies.
- Converged networks streamline communication by transmitting data, voice, and video over unified infrastructure using consistent standards.
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Description
This quiz covers the fundamental aspects of reliable network architecture as outlined by Cisco. Discover the key characteristics that essential technologies must address to support effective data movement across networks. Test your understanding of these critical concepts in networking.
