Routing Algorithms in Computer Networks

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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?

Only one node makes the routing decision (D) Signup and view all the answers

What happens if the central node fails in centralized routing?

The routing function in the network may be interrupted (D) Signup and view all the answers

What is a special case of centralized routing?

Source routing (A) Signup and view all the answers

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

Implementing routing algorithms (A) Signup and view all the answers

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

Optimality (C) Signup and view all the answers

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

Least-cost-path and non-least-cost-path algorithms (D) Signup and view all the answers

Why is simplicity an important characteristic of routing algorithms?

Because routers with limited physical resources are involved (C) Signup and view all the answers

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

To perform correctly and converge rapidly (B) Signup and view all the answers

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

It enables load balancing in the network (B) Signup and view all the answers

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

By communication with neighboring nodes (D) Signup and view all the answers

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

Current traffic load on the link (A) Signup and view all the answers

What is the main objective of Dijkstra's algorithm?

To find the least-cost path from a source node to all other nodes (B) Signup and view all the answers

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

To store the cost of the least-cost path from node i to node j (B) Signup and view all the answers

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

It maintains information in a central location (C) Signup and view all the answers

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

The specific approach to finding the least-cost path (A) Signup and view all the answers