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T rue or F alse (1 through 20) 1point each: 1. _______________In a directed grap

ID: 3612488 • Letter: T

Question

True or False (1 through 20) 1point each:

1.     _______________In a directed graph edge(v, w) != (w, v) .

2.     _______________There is a shortest pathbetween two vertices if the path between

them uses a negative cycle.

3.     _______________ The depth first searchwill visit every node in an undirected graph

only if the graph is not connected.

4.     ______________ The depth-first searchis a traversal which visits a source vertex s,

then visits the vertices one edge away from s, then those twoedges away from s, and so on.

5.     ______________ If a spanning tree ofa graph has n vertices, the graph must have  

n-1 vertices.

6.     ______________ The adjacency matrixfor a simple graph will never have 1’s along

the diagonal.

7.     ______________ A shortest-path treeis the set of shortest paths from a source

vertex.

8.     ______________ An edge in a directedgraph is represented by an ordered pair.

9.     ______________ An adjacency matrixis a two-dimensional arrayimplementation       for a graph.

10. ______________ In a undirected graph edge (v, w) = (w,v).

11. ______________ The breadth-first search can be used ona tree.

12. ______________ A spanning graph need not have all ofthe vertices of theoriginal         graph.

13. ______________ A spanning tree is also a spanninggraph.

14. ______________ Prim's Algorithm will always maintainone tree at every stage of     

development.

15. ______________ A biconnected graph is a connected graphwith an articulation

point.

16. ______________ Sollin's algorithm is an algorithm forbuilding a minimum

spanning tree.

17. ______________ A spanning tree with 10 vertices willhave exactly 5 edges.

18. ______________ An undirected complete graph with 10vertices will have 45 edges.

19. ______________ A spanning tree is a spanning graph withno cycles.

20. ______________ The depth-first search implementationuses a queue to keep up

with neighbors.

Explanation / Answer

hey i tried answering your questions. Few of them m not sureof.. here you go!!! T-TRUE F-FALSE 1. T 3. F 4. F 5. F 6. T 8. T 9. T 10. T 11. T 12. T 14. T 15. F A biconnected graph is a connected graph with noarticulation point. 16. T 18. T using formula for complete graph N(N-1) / 2 where N isnumber of vertices. 19. T 20. F it uses stack