(a) Two cut
(b) Recovery of two cut-vertex node from publication: An Efficient Connectivity Restoration Technique (ECRT) for Wireless Sensor Network | Node failure in Wireless Sensor Networks (WSNs) is a ...
Download scientific diagram | Recovery of two cut-vertex node from publication: Smart node relocation (SNR) and connectivity restoration mechanism for wireless sensor networks | Abstract Node ...
Adaptive Connectivity Restoration from Node Failure (s) in ...
In the case two or more cut -vertices fail around the same time, each FH of the failed cut-vertex will initiate the recovery process and they may compete to use the same nodes for repositioning.
The failure of some nodes , like cut vertex nodes , can partition the network into multiple network segments. Most of the solutions for network partition recovery proposed in the literature depend on the assumption that the network is obstacle-free.
Efficient Actor Recovery Paradigm for Wireless Sensor and Actor ...
A neighbor node that is available in Node Distance range (ND) has a similar Cut Vertex Node Distance (CVND). This helps reduce the recovery time and overhead which is important for resource-constrained mission-critical applications.
A cut vertex is a node that, if it fails or is compromised, will split the network into two or more disconnected components. An attacker can exploit this by launching a " cut - vertex -aware" black-hole or grey-hole attack, disconnecting an entire subtree from the network root and causing catastrophic data loss.
Cut Vertices
A cut vertex is a node in a connected graph whose removal splits the graph into two or more separate components, representing a single point of failure. A vertex's importance as a cut vertex is determined by its structural position as a sole bridge between parts of a network, not necessarily by its number of connections (degree). Cut vertices can be systematically identified as the junction ...
Although checkpoint-based recovery is able to handle any node failures, it potentially suffers from high recovery latency. The rea-son is two -fold. First, checkpoint-based recovery re-executes the missing workloads over the whole graph, residing in both failed and healthy compute nodes , based on the most recent checkpoint.
PDF Cut vertices, Cut Edges and Biconnected components
The root of a DFS-tree is an articulation point if and only if it has at least two children. A nonroot vertex v of a DFS-tree is an articulation point of G if and only if has a child s such that there is no back edge from s or any descendant of s to a proper ancestor of v. Leafs of a DFS-tree are never articulation points
Thus on removal of vertex 3 and its associated edges the graph will get disconnected or the number of components in the graph will increase as the subtree rooted at vertex 4 will form a separate component. Hence vertex 3 is an articulation point. Now consider the following graph: Again the vertex 4 is the child of vertex 3.