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Explain Wait for graph (WFG) with Resource request and allocation graph (RRAG).
WFG with RRAG:
A graph G = (V,E) is termed as bipartite if V can be decomposed in two disjoint sets V1 and V2 therefore every edge in E joins a vertex in V1 to a vertex in V2. Assume that V1 be a set of processes and also V2 be a set of resources. Thus the graph is directed we will seems as:
1. Utilize a resource allocation graph to derive a wait-for-graph.
2. Wait-for graph acquired by making an edge from p1 to p2 if p1 is waiting for a resource which is allocated to p2.
3. Deadlock exists if a cycle exists into resulting wait-for-graph.
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In a DTMF phone a dialling of 8 generates (A) 1336 Hz- 770 Hz (B) 1209 Hz - 1477 Hz (C) 1209 Hz- 941 Hz (D) 1336 Hz-852 Hz
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explain push and pop?
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