Social Networks | Week 1

Session: JULY-DEC 2023

Course Name: Social Networks

Course Link: Click Here

These are Nptel Social Networks Week 1 Assignment 1 Answers

Q1. Which function will you use to find the number of edges drawn in the Graph?
order( )
edges( )
edge_size( )
number_of_edges( )

Answer: number_of_edges( )

Q2. What will be the maximum number of edges for a graph with 10 vertices?
10
45
55
100

Answer: 45

Q3. What does items() function for a dictionary return?
Dictionary with all keys and values
List with tuples having keys and values
List containing all keys and values
Tuples containing all keys and values

Answer: List with tuples having keys and values

These are Nptel Social Networks Week 1 Assignment 1 Answers

Q4. What will be the output of the given code?
x=[i for i in range(10)]
plt.plot(x,x**2,‘r=’)
plt.show ( )
Error displaying unsupported operand types for ** in plot
It plots the x with its exponential value with points and lines in the plot
It plots x with expontential value with points in the plot
It plots x with expontential value with red line in the plot

Answer: Error displaying unsupported operand types for ** in plot

Q5. What does the value ‘ys-’ as the third parameter in plot function indicate?
It helps to plot square with line connecting the points
It helps to plot yellow color square with dotted line connecting the points
It helps to plot yellow color square with line connecting the points
It helps to plot yellow color dotted line

Answer: It helps to plot yellow color square with line connecting the points

Q1) What would be the output for the following code?
scores=[78,77,45]
scores.append(90)
scores.append(98)
scores.reverse()
print(scores)
a. [98, 90, 78, 77, 45]
b. [78, 77, 45, 90, 98]
c. [98, 90, 45, 77, 78]
d. [78, 77, 45, 98, 90]

Answer: c. [98, 90, 45, 77, 78]

See also Social Networks | Week 4

Q2) Given the following code, Which of the following is not a possible output?

import random

def calc():
    x=random.random()
    y=random.random()
    z=random.random()
    return( x+y+z )
print(calc())

a. 1.6115945523495627
b. 0.202709723169674
c. 2.3142203461882844
d. 3.9133426822720435

Answer: d. 3.9133426822720435

Q3) Which of the following statement creates the given dictionary, d:{1:1,2:4,3:9,4:16}
a. d={x:x∗∗2 for x in range(1,5)}
b. d={x:x∗∗2 for x in range(5)}
c. d={x:x∗∗2 for x in range(0,5)}
d. d={x:x∗∗2 for x in range(1,6)}

Answer: a. d={x:x∗∗2 for x in range(1,5)}

These are Nptel Social Networks Week 1 Assignment 1 Answers

Q4) Identify the graph output for the following segment:

import networkx as nx
import matplotlib.pyplot as plt
G=nx.Graph()
G.add_nodes_from([1,2,3,4,5])
G.add_edges_from([(1,2),(2,3),(2,5),(1,6),(3,4)])
nx.draw(G,with_labels=True)
plt.show()

Answer: a

These are Nptel Social Networks Week 1 Assignment 1 Answers

Q5) Given the following code, what is the number of edges in the graph created?
G=nx.Graph()
G.add_nodes_from([i for i in range(10)])

def create_graph(n):
    while(len(G.edges())< n):
        u=random.choice(list(G.nodes()))
        v=random.choice(list(G.nodes()))
        if u!=v and G.has_edge(u,v)==0:
        G.add_edge(u,v)

a. 9
b. 10
c. n
d. n−1

Answer: c. n

Q6) Which of the statements is True for the graph created from the statement: nx.gnp_random_graph(10,0.5)?
a. Graph has 10 nodes with half of the nodes connected
b. Graph has 10 nodes with each edge to be put with probability 0.5
c. Connected graph with 10 nodes
d. Graph has 5 nodes with half of the nodes connected

Answer: b. Graph has 10 nodes with each edge to be put with probability 0.5

These are Nptel Social Networks Week 1 Assignment 1 Answers

Q7) What is the maximum number of graphs that can be created from 10 nodes?
a. 2^{(10 2)}
b. 2^{(2 10)}
c. 2¹⁰
d. 2^{10 2}

Answer: a. 2^{(10 2)}