Social Networks | NPTEL 2022 | Week 2 Assignment Solutions

This set of MCQ(multiple choice questions) focuses on the Social Networks NPTEL Week 2 Assignment Solutions.

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Week 0: Assignment answers
Week 1: Introduction
Week 2: Handling Real-world Network Datasets
Week 3: Strength of Weak Ties
Week 4: Strong and Weak Relationships (Continued) & Homophily 
Week 5: Homophily Continued and +Ve / -Ve Relationships
Week 6: Link Analysis 
Week 7: Cascading Behaviour in Networks
Week 8: Link Analysis (Continued)
Week 9: Power Laws and Rich-Get-Richer Phenomena
Week 10: Power law (contd..) and Epidemics
Week 11: Small World Phenomenon
Week 12: Pseudocore (How to go viral on web)

NOTE: You can check your answer immediately by clicking show answer button. This set of “Social Networks NPTEL 2022 Week 2 Assignment Solution” contains 10 questions.

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Social Networks NPTEL 2022 Week 2 Assignment Solutions

Q1. For any vertex v in an undirected (without loop, multiple edges) , the clustering coefficient of v ranges from:

a) -1 to +1
b) 0 to 1
c) −∞ to +∞
d) 0 to +∞

Answer: b) 0 to 1

Q2. Which of the following is not a network data set format?

a) Comma Separated Values
b) GEphi XML Format
c) Pajek NET
d) GraphML

Answer: b) GEphi XML Format

Q3. Diameter of the complete graph on n vertices is

a) n-1
b) n-2
c) 0
d) 1

Answer: d) 1

Q4. Assuming Synonymy network of English language is undirected, we can traverse from the word ’FRIEND’ to ’ENEMY’ necessarily because:

a) the underlying network is connected.
b) there must be an edge between them.
c) the words have same number of letters.
d) the Synonymy network is complete.

Answer: a) the underlying network is connected.

Q5. Let the given four real-world networks be
A. Friendship network  B. Road network  C. E-mail network  D. Citation network

Choose the correct option.

a) Only (A) is undirected
b) Only (C) and (D) are directed.
c) Only (C) is directed.
d) All of them are undirected.

Answer: b) Only (C) and (D) are directed.

Social Networks NPTEL Week 2 Assignment Solutions

Q6. For reading a network file where the data is in the following form, which function should be used?
node1 node2
node2 node3
node2 node5…….. 
where node1, node2, node3, node5 etc are ids of the nodes and node1 node2 indicates that there is an undirected edge between node1 and node2 and so on

a) nx.read_nodelist()
b) nx.read_edgelist()
c) nx.read_adjmat()
d) Both nx.read_edgelist() and nx.read_adjmat() can be used

Answer: b) nx.read_edgelist()

Q7. State yes or no. Degree distribution of most real-world networks follows power law, which means there are very few nodes with very less degrees and there are a lot of nodes with very high degrees.

a) Yes
b) No

Answer: b) No

Social Networks NPTEL Week 2 Assignment Solutions

Q8. What is the density of the graph H?

Social Networks NPTEL week 2 Assignment Solutions

a) 1/2
b) 1/3
c) 1
d) 0

Answer: b) 1/3

Social Networks NPTEL week 2 Assignment Solutions

Q9. Given that the clustering coefficient of a vertex v is 0.3, and the number of edges between the neighbors of v is 3. What is the degree of the vertex v? (Graph considered is undirected, without loops and multiple edges)

a) 3
b) 4
c) 5
d) Insufficient information

Answer: c) 5

Q10. If G is a connected graph with n vertices, what is the minimum number of edges the graph G should have?

a) n
b) n-1
c) n+1
d) n/2

Answer: b) n-1

Social Networks NPTEL week 2 Assignment Solutions

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