Question

Which among the following is true about tree based routing?

(a) Tree based routing is a distributed routing scheme controlled by a multiple network entities

(b) Tree based routing is a distributed routing scheme controlled by a single network entity

(c) Tree based routing is a centralized routing scheme controlled by a single network entity

(d) Tree based routing is a centralized routing scheme controlled by a multiple network entities

I have been asked this question by my college professor while I was bunking the class.

The doubt is from Next Generation Wireless Network in division Next Generation Wireless Network of Cognitive Radio

Answer 1

The correct answer is:

(b) Tree based routing is a distributed routing scheme controlled by a single network entity

Explanation:

Tree-based routing refers to a routing strategy in which a logical or physical tree structure is formed for data transmission. This method is commonly used in various types of networks, including wireless and cognitive radio networks.

• (a) Tree based routing is a distributed routing scheme controlled by multiple network entities – This is incorrect because tree-based routing is typically not controlled by multiple entities but rather by a central or single coordinator (in some cases, a distributed algorithm may still exist within the tree structure itself).

• (b) Tree based routing is a distributed routing scheme controlled by a single network entity – Correct. Tree-based routing can be distributed, but the overall control typically lies with a single network entity, such as a root node or a central coordinator, which manages or initiates the routing structure. This allows for a simplified tree formation in distributed environments but with a singular control entity.

• (c) Tree based routing is a centralized routing scheme controlled by a single network entity – This is also incorrect because while tree-based routing may have a central controlling entity (like a root node), the routing itself is distributed across the tree structure.

• (d) Tree based routing is a centralized routing scheme controlled by multiple network entities – This is incorrect because tree-based routing, by definition, is typically centralized or managed by one central entity or node, not multiple entities.

Thus, the most accurate description of tree-based routing is that it is distributed (in terms of the routing process) but controlled by a single network entity (often the root or central node).