Social Networks | Week 2
Session: JULY-DEC 2023
Course Name: Social Networks
Course Link: Click Here
These are Nptel Social Networks Week 2 Assignment 2 Answers
Q1. Find the diameter for the given graph G in Figure 1
3
4
5
6
Answer: 4
Q2. Which of the following networks is a directed graph?
followers on instagram account
facebook friendship network
collaboration network
ingredients network
Answer: followers on instagram account
Q3. What will be the range of clustering coefficient for any vertex in undirected graph with no loop and multiple edges?
0 to 1
0 to infinity
-infinity to infinity
-1 to +1
Answer: 0 to 1
These are Nptel Social Networks Week 2 Assignment 2 Answers
Q4. Key tag in GraphML is used to assign
Node only
Edge only
Both node and edge
loop
Answer: Both node and edge
Q5. Expand GEXF.
Graphical Extension XML Format
Graphx Extension XML Format
Graph Exchange XML Format
Graph Extend Exchange Format
Answer: Graph Exchange XML Format
Q6. Compute density of the given graph.
0
1/2
1/3
1/4
Answer: 1/3
These are Nptel Social Networks Week 2 Assignment 2 Answers
Q7. For the given graph H in Question 6, If A=highestdegree∑ degree, what will be the value of A?
1
1/2
1/5
2/5
Answer: 1/2
Q8. Choose the data set format which starts with the keyword “graph”?
GML
Graph Exchange XML
txt
GEXF
Answer: GML
Q9. The degree distribution of most real-world networks follows which law?
Zipf’s Law
Benford’s Law
Power Law
Difficult to say; can follow any distribution
Answer: Power Law
These are Nptel Social Networks Week 2 Assignment 2 Answers
Q10. Pick out the clustering coefficient for Node A in the given graph K.
1/6
3/4
1/3
1/2
Answer: 1/6
These are Nptel Social Networks Week 2 Assignment 2 Answers
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Session: JAN-APR 2023
Course Name: Social Networks
Course Link: Click Here
These are Nptel Social Networks Week 2 Assignment 2 Answers
Q1. Consider the ingredient network where a node represents an ingredient and an edge exists between two nodes if there is a dish where both the ingredients are used. Which of the following statements is true for the nodes of the same community in such a network?
a. ingredients that are often used together
b. ingredients that are never used together
c. ingredients that are rarely used together
d. none of the above
Answer: a. ingredients that are often used together
Q2. For the Synonymy network, the path from Love to Hatred is because
a. Both are synonymous
b. both the words are connected by anonymous words
c. of degradation of synonymity along the path
d. mistake in edges connecting them
Answer: c. of degradation of synonymity along the path
Q3. Identify the network that is a Directed graph.
a. Friendship network
b. Email network
c. Road network
d. Co-authorship network
Answer: b. Email network
These are Nptel Social Networks Week 2 Assignment 2 Answers
Q4. Which of the following statements is True for GML format of networks?
Statement I: Labels and attributes can be added
Statement II: Weights cannot be added
a. Only I
b. Only II
c. Both I and II
d. Neither I nor II
Answer: a. Only I
Q5. The degree distribution of most real world datasets follows
a. Law of large numbers
b. Power law
c. Universal law of Approximation
d. Benford’s law
Answer: b. Power law
Q6. Given a complete graph with 99 nodes, what is the average clustering coefficient?
a. 0
b. 1
c. 0.5
d. 0.25
Answer: b. 1
These are Nptel Social Networks Week 2 Assignment 2 Answers
Q7. What is the diameter of Graph G?
a. 5
b. 6
c. 7
d. 8
Answer: b. 6
Q8. Calculate the clustering coefficient of vertex ’0’ in the following graph H.
a. 0.1
b. 0.2
c. 0.3
d. 0.4
Answer: c. 0.3
These are Nptel Social Networks Week 2 Assignment 2 Answers
Q9. Given n nodes, what is the minimum number of edges required to make the graph connected?
a. O(logn)
b. O(n2)
c. O(n3)
d. O(nlogn)
Answer: d. O(nlogn)
Q10. Calculate the density of the following graph
Answer: 0.80
These are Nptel Social Networks Week 2 Assignment 2 Answers
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