Routing Algorithms in Computer Networks
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Questions and Answers

What is the main difference between least-cost path and non-least-cost path routing algorithms?

  • The cost of the path (correct)
  • The location of the routing decision
  • The number of paths available
  • The type of routing decision made

    • What is a characteristic of distributed routing algorithms?

  • Only one node makes the routing decision
  • All nodes contribute to the routing decision (correct)
  • The routing decision is made by the destination node
  • The routing decision is made by the source node

    • What is a disadvantage of static routing?

  • It can react immediately to failures
  • It is difficult to implement
  • It can handle large networks
  • It requires a small network size (correct)

    • What is a characteristic of centralized routing?

    <p>Only one node makes the routing decision</p> Signup and view all the answers

    What happens if the central node fails in centralized routing?

    <p>The routing function in the network may be interrupted</p> Signup and view all the answers

    What is a special case of centralized routing?

    <p>Source routing</p> Signup and view all the answers

    What is the primary responsibility of routers in network-layer routing?

    <p>Implementing routing algorithms</p> Signup and view all the answers

    Which characteristic of routing algorithms refers to the ability to select the best route?

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

    What is the main classification of routing algorithms based on the path they choose?

    <p>Least-cost-path and non-least-cost-path algorithms</p> Signup and view all the answers

    Why is simplicity an important characteristic of routing algorithms?

    <p>Because routers with limited physical resources are involved</p> Signup and view all the answers

    What is the primary goal of routing algorithms in the face of unforeseen circumstances?

    <p>To perform correctly and converge rapidly</p> Signup and view all the answers

    What is the benefit of a routing algorithm that adapts to load increases or decreases?

    <p>It enables load balancing in the network</p> Signup and view all the answers

    What is the primary method of learning the state of the network in dynamic routing?

    <p>By communication with neighboring nodes</p> Signup and view all the answers

    What is the primary factor in determining the link cost in least-cost algorithms?

    <p>Current traffic load on the link</p> Signup and view all the answers

    What is the main objective of Dijkstra's algorithm?

    <p>To find the least-cost path from a source node to all other nodes</p> Signup and view all the answers

    In Dijkstra's algorithm, what is the purpose of the βij variable?

    <p>To store the cost of the least-cost path from node i to node j</p> Signup and view all the answers

    What is the characteristic of Dijkstra's algorithm that makes it a centralized routing algorithm?

    <p>It maintains information in a central location</p> Signup and view all the answers

    What is the primary difference between Dijkstra's algorithm and the Bellman-Ford algorithm?

    <p>The specific approach to finding the least-cost path</p> Signup and view all the answers

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