Cisco Confidential 7 - WAN Topologies: Hub-and-Spoke Topology
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Questions and Answers

What do WAN standards mainly focus on in the OSI Model?

  • Physical layer and data link layer (correct)
  • Session layer and physical layer
  • Network layer and transport layer
  • Presentation layer and application layer
  • Which organization is responsible for managing modern WAN standards?

  • TIA/EIA (correct)
  • ISOC
  • ICANN
  • IEEE
  • What does a Virtual Private Network (VPN) enable a company to do?

  • Share confidential company data on social media
  • Host public webinars with global participants
  • Connect easily and securely with employees worldwide (correct)
  • Store data offline for backup purposes
  • What is the main purpose of WANs according to the provided text?

    <p>Connect distributed employees and facilities worldwide</p> Signup and view all the answers

    Which industry standard authority is responsible for WAN standards?

    <p>TIA/EIA</p> Signup and view all the answers

    How has Distributed Network SPAN Engineering utilized Virtual Private Networks (VPNs)?

    <p>To easily and securely connect with employees and facilities globally</p> Signup and view all the answers

    What is a notable disadvantage of the Hub-and-Spoke topology?

    <p>Single point of failure</p> Signup and view all the answers

    Why is the Dual-homed Topology more difficult to implement compared to single-homed topologies?

    <p>Requires additional networking hardware</p> Signup and view all the answers

    What distinguishes a Fully Meshed Topology from a Partially Meshed Topology?

    <p>Fully Meshed uses multiple virtual circuits</p> Signup and view all the answers

    Which feature does the Dual-homed Topology prioritize over cost efficiency?

    <p>Increased fault-tolerance</p> Signup and view all the answers

    In a Hub-and-Spoke Topology, how do the spoke routers communicate with each other?

    <p>Via the hub router only</p> Signup and view all the answers

    What is a distinguishing characteristic of a Dual-homed Topology compared to other WAN topologies?

    <p>Enhanced network redundancy and load balancing</p> Signup and view all the answers

    What are some of the benefits of an Ethernet WAN?

    <p>Enhanced business productivity</p> Signup and view all the answers

    Which technology can encapsulate all types of protocols including IPv4 and IPv6 traffic?

    <p>Multiprotocol Label Switching (MPLS)</p> Signup and view all the answers

    In MPLS, what is the role of a label switched router (LSR)?

    <p>Forwarding traffic based on labels</p> Signup and view all the answers

    Which Ethernet service can also be referred to as Virtual Private LAN Service (VPLS)?

    <p>Metro E</p> Signup and view all the answers

    Which WAN technology is commonly used to replace traditional serial point-to-point, Frame Relay, and ATM links?

    <p>Ethernet WAN</p> Signup and view all the answers

    What is a role that MPLS can serve according to the text?

    <p>Providing services for QoS support, traffic engineering, redundancy, and VPNs</p> Signup and view all the answers

    What is the international standard for adding high-bandwidth data to an existing cable system?

    <p>Data over Cable Service Interface Specification (DOCSIS)</p> Signup and view all the answers

    What component converts RF signals to light pulses over fiber-optic cable?

    <p>Optical node</p> Signup and view all the answers

    In a Fiber to the Building (FTTB) setup, where does fiber reach?

    <p>The boundary of the building</p> Signup and view all the answers

    What may happen to available bandwidth as more users join a cable service according to the text?

    <p>It may drop below the expected rate</p> Signup and view all the answers

    Where is the Cable Modem Termination System (CMTS) located?

    <p>Provider headend</p> Signup and view all the answers

    What technology uses a coaxial cable from the cable company to provide IP services to users?

    <p>Internet-Based Connectivity Cable Technology</p> Signup and view all the answers

    Which topology provides the most redundancy possible?

    <p>Dual-multihomed</p> Signup and view all the answers

    What is a drawback of the Dual-homed topology?

    <p>Loss of internet connectivity during ISP outage</p> Signup and view all the answers

    Which broadband solution has limited bandwidth that is distance sensitive?

    <p>DSL</p> Signup and view all the answers

    What is a characteristic of a Single-homed topology?

    <p>Least expensive solution</p> Signup and view all the answers

    In which topology does the organization lose internet connectivity if the ISP experiences an outage?

    <p>Dual-homed</p> Signup and view all the answers

    What should be considered in determining the best broadband solution when multiple options are available?

    <p>Cost-versus-benefit analysis</p> Signup and view all the answers

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