100 Networking Questions

Basic Python Programming

1. Write a Python program to reverse a string. (I have also added code for reverse a list)

#Reverse a string

a="Hello"

try:

    print(a[::-1])

    #Reverse a list

    b=[1,'a',"Suchi"]

    print(b[::-1])

    print(b[2])

    c=b[2]

    print(c[::-1])

except Exception as e:

    print("Error Found"+e)

Reasoning:

• [::-1] is Python slicing syntax:
  • : refers to the entire sequence.
  • -1 specifies the step (reverse direction).
• This avoids using loops, making the program concise and efficient.

2. Implement a function to check if a number is prime.

num=23

if num<2:

    print("Not Prime")

for i in range(2,int(num**0.5)+1):

    if num%i==0:

        print("Not Prime")

print(num," is Prime ")

Reasoning:

• A prime number is only divisible by 1 and itself.
• Checking divisors up to the square root of n reduces time complexity to O(√n).

3. Write a program to calculate the factorial of a number using recursion.

number = 90

fact = 1

for i in range(1, number + 1):  # Loop from 1 to number (inclusive)

    fact = fact * i  # Multiply each i to fact

print("Factorial of ", number, " is ", fact)  # Display the result

Reasoning:

• The factorial of n is n * (n-1)!.
• The base case ensures the recursion stops when n reaches 0 or 1.

4. Create a program to find the GCD (Greatest Common Divisor) of two numbers.

def gcd(a, b):

    while b:  # Use the Euclidean algorithm

        a, b = b, a % b

    return a

# Example usage

num1, num2 = 56, 98

print(f"GCD of {num1} and {num2}:", gcd(num1, num2))

Reasoning:

• The Euclidean algorithm works by repeatedly replacing the larger number with its remainder when divided by the smaller number.
• When the remainder becomes 0, the other number is the GCD.

5. Write a Python program to convert a decimal number to binary.

def decimal_to_binary(n):

    return bin(n)[2:]  # Use Python's built-in bin() function and remove the '0b' prefix

# Example usage

number = 42

print(f"Binary representation of {number}:", decimal_to_binary(number))

Reasoning:

• The bin() function converts a decimal number to its binary representation as a string prefixed with 0b.
• Slicing off the prefix gives the pure binary format.

6. Implement a program to check if a string is a palindrome.

#palindrome string

a="MadaM"

b=a[::-1]

print("value of a and b are: ",a,b)

if a==b:

    print("Palindrome")

else:

    print("Not Palindrome")

Reasoning:

• A palindrome reads the same forward and backward.

7. Write a program to generate the Fibonacci sequence up to n terms.

#Fibonacci

seq=[0,1]

num=10

for num in range(2,num):

    seq.append(seq[-1]+seq[-2])

print(seq)

Reasoning:

• The Fibonacci sequence starts with 0 and 1, with each subsequent term being the sum of the previous two.
• Using a loop and list ensures clarity and efficiency.

8. Create a program to find the largest and smallest numbers in a list.

#largest and smallest number in a list

a=[1,2,90,76,3,0]

print(min(a))

print(max(a))

#without using builtin function :

mini=a[0]

maxi=a[0]

for num in a:

    if num<mini:

        mini=num

    if num>maxi:

        maxi=num

print(mini,maxi)

Reasoning:

• Python's min() and max() functions efficiently find the smallest and largest elements in a list.

9. Write a Python program to count the frequency of each character in a string.

#freq of each character

from collections import Counter

string="Nokia"

print(dict(Counter(string)))

Reasoning:

• The Counter class from the collections module efficiently counts occurrences of elements in a string.

10. Implement a function to check if two strings are anagrams.

#anagrams

a="mena"

b="name"

print(sorted(a.lower())==sorted(b.lower()))

Reasoning:

• Anagrams contain the same characters in different orders.
• Converting to lowercase and sorting ensures a case-insensitive comparison.

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Data Structures

11. Write a program to implement a stack using a list.
12. Implement a queue using a list in Python.
13. Create a Python program to perform binary search on a sorted list.
14. Write a program to find the sum of elements in a matrix.
15. Implement a program to transpose a matrix.
16. Write a Python program to find the maximum depth of a binary tree.
17. Implement a function to perform in-order traversal of a binary tree.
18. Write a program to merge two sorted linked lists.
19. Implement a function to detect a cycle in a linked list.
20. Create a Python program to sort a list using the merge sort algorithm.

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Algorithms

21. Write a Python program to implement the bubble sort algorithm.
22. Implement the quicksort algorithm in Python.
23. Write a program to find the shortest path in a graph using Dijkstra’s algorithm.
24. Create a Python program to implement the Knapsack problem.
25. Implement a function to find all subsets of a given set.
26. Write a program to find the longest common subsequence of two strings.
27. Implement a function to calculate the edit distance (Levenshtein distance) between two strings.
28. Write a program to solve the N-Queens problem.
29. Implement a function to find the minimum spanning tree of a graph using Kruskal’s algorithm.
30. Write a program to perform depth-first search (DFS) and breadth-first search (BFS) on a graph.

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Networking and Automation

31. Write a program to check if a specific port on a server is open.
32. Implement a script to ping a list of IP addresses and display the reachable ones.
33. Write a program to fetch the MAC address of a device using Python.
34. Create a Python script to establish an SSH connection and execute a command on a remote server.
35. Write a program to simulate a simple DHCP server using Python.
36. Implement a program to parse and display OSPF or BGP configuration from a router.
37. Write a script to monitor network traffic using Python (e.g., with scapy).
38. Create a program to check if a specific website is reachable (HTTP status).
39. Implement a script to retrieve and parse SNMP data from a network device.
40. Write a Python program to generate random passwords for network devices.

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String Manipulation

41. Write a program to remove duplicates from a string.
42. Implement a function to find all permutations of a string.
43. Write a Python program to count the number of vowels and consonants in a string.
44. Create a program to find the first non-repeating character in a string.
45. Implement a program to reverse words in a given sentence.
46. Write a function to check if a string contains only unique characters.
47. Implement a Python program to convert camel case to snake case and vice versa.
48. Write a program to find the longest palindrome substring in a string.
49. Implement a function to compress a string using the counts of repeated characters.
50. Write a Python program to sort a string alphabetically.

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File Handling

51. Write a program to read a file and count the number of lines and words.
52. Create a script to merge two files into one.
53. Write a Python program to find duplicate lines in a file.
54. Implement a function to search for a specific string in a file.
55. Write a script to read and parse a CSV file in Python.
56. Create a program to write a list of dictionaries to a JSON file.
57. Write a script to monitor changes in a log file in real-time.
58. Implement a program to count the number of occurrences of each word in a file.
59. Write a script to find and replace a string in a text file.
60. Create a program to split a large file into smaller chunks.

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Mathematical Problems

61. Write a program to check if a number is an Armstrong number.
62. Implement a function to find the LCM (Least Common Multiple) of two numbers.
63. Write a program to find the sum of the digits of a number.
64. Create a program to generate all prime numbers up to n.
65. Write a program to check if a number is a perfect square.
66. Implement a Python program to calculate the power of a number without using **.
67. Write a program to find the roots of a quadratic equation.
68. Implement a Python program to calculate the area of different shapes (circle, triangle, rectangle).
69. Write a program to convert Roman numerals to integers.
70. Create a Python program to find the sum of all prime factors of a number.

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Advanced Topics

71. Write a Python script to create and manipulate threads.
72. Implement a program to demonstrate inter-thread communication.
73. Create a Python program to implement a producer-consumer problem using threads.
74. Write a program to serialize and deserialize Python objects using pickle.
75. Implement a Python program to schedule tasks using schedule or apscheduler.
76. Write a program to simulate a REST API client in Python.
77. Create a Python script to parse and display XML data.
78. Write a program to solve the Tower of Hanoi problem.
79. Implement a Python script to encrypt and decrypt data using the cryptography library.
80. Write a Python program to create a simple chatbot using NLP libraries.

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Machine Learning and Data

81. Write a program to perform linear regression using Python.
82. Create a script to read and visualize data using matplotlib.
83. Write a program to cluster data using the K-means algorithm.
84. Implement a script to process and clean raw data using pandas.
85. Write a program to predict house prices using a sample dataset.
86. Create a Python script to analyze text sentiment using TextBlob.
87. Write a program to perform image classification using a pre-trained model (e.g., ResNet).
88. Implement a Python script to scrape data from a website.
89. Write a program to calculate the confusion matrix for a classification model.
90. Create a Python script to automate Excel operations using openpyxl.

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Miscellaneous

91. Write a program to simulate a simple calculator.
92. Implement a function to check if a number is a power of two.
93. Write a Python script to generate a QR code for a given URL.
94. Create a program to display the current weather using an API.
95. Implement a script to fetch emails from an inbox using IMAP.
96. Write a program to schedule and send emails automatically using Python.
97. Create a program to scrape trending topics from Twitter using tweepy.
98. Write a script to compress and decompress files using Python.
99. Implement a program to generate and validate a UUID.
100. Create a Python program to simulate a simple game like Tic-Tac-Toe or Hangman.
101. Fetch only all elements of a nested list to another list. 

a = [[1,2,3], 4, 5, [1,7], [10,20,30]] # Define the initial nested list 'a' 

result = [] # Initialize an empty list 'result' to store the extracted elements 

for element in a: # Iterate over each element in the list 'a' 

    if isinstance(element, list): # Check if the current element is a list 

        result.extend(element) # If it is a list, extend 'result' with the elements of the current list 

    else: # If the current element is not a list 

        result.append(element) # Append the current element to 'result' 

print(result) # Print the resulting list 'result'