CBSE Board Exam 2025: Check Important Questions From Computer Science Sample Paper

Here are some important questions from the sample papers:

• Which switching technique breaks data into smaller packets for transmission, allowing multiple packets to share the same network resources
• What constraint should be applied on a table column so that duplicate values are not allowed in that column, but NULL is allowed
• Write an SQL command to remove the Primary Key constraint from a table, named MOBILE. M_ID is the primary key of the table
• List one advantage and one disadvantage of star topology
• Expand the term SMTP. What is the use of SMTP?
• Write a Python function that displays all the words containing @cmail from a text file "Emails.txt"
• Write a Python function that finds and displays all the words longer than 5 characters from a text file "Words.txt"
• Which switching technique breaks data into smaller packets for transmission, allowing multiple packets to share the same network resources
• Give two examples of each of the following: (I) Arithmetic operators (II) Relational operators
• The code provided below is intended to swap the first and last elements of a given tuple. However, there are syntax and logical errors in the code. Rewrite it after removing all errors. Underline all the corrections made. def swap_first_last(tup) if len(tup) < 2: return tup new_tup = (tup[-1],) + tup[1:-1] + (tup[0]) return new_tup result = swap_first_last((1, 2, 3, 4)) print ("Swapped tuple: " result)