Practice IT Operating System Questions and Answers

• What is the cardinality of the set {1,2,3,5,4} ?
• If a set 𝐴contains 4 elements, how many elements are there in its power set?
• Which of the following statements about a decoder is correct?
• Malicious software is known as :
• Frame relay :
• Every host computer on the internet has a (n) :
• Web Pages can be created using :
• The term for the use of deception to get someone’s sensitive information :
• The result of a SQL SELECT statement is a(n) :
• Entities having primary key are called :
• To discard all pending data changes :
• Assembly language is a :
•  How many participating entities are there in an n-ary relationship where n=5?
• Deletion of an employee from table also deletes that employee from another table. This kind of delete is called :
•  Which of the attributes shown below is a simple attribute? ...
• In Oracle database variable length column is declared by ____________
• Stack is sometimes called as :
• Kernel is :
• Handshaking is :
• Backtracking problem is seen in :
• Which of the following properties is true for a binary heap?
• Which of the following conditions must be satisfied for Dijkstra's Algorithm to work correctly?
• A data structure in which elements can be inserted or deleted at/from both the ends but not in the middle is :
• Which of the following statements about a B+ Tree is correct?
• Linux uses a time-sharing algorithm ___________
• If a series is already sorted, which sorting technique will finish in the least time?
• What is the best case time complexity of merge sort?
• Which is not an IoT OS?
• Fill the blank In K-Means algorithm, we calculate the distance between each point of the dataset to every ________ initialized. 
• Which is relational Database
• In datawarehouse , a fact table consist of
• State True or False Kernel level thread cannot share the code segment.
• State True or False Semi-structured data  is data that does not conform to a data model but has some structure. It lacks a fixed or rigid schema. It is...
• The latency of a network is 
• Which is computer object code?
• Predict the output list1 = ['physics', 'chemistry', 1997, 2000] list2 = [1, 2, 3, 4, 5, 6, 7 ] print "list1[0]: ", list1[0]          ...
• Which algorithm approach focus on Local Optimum solution?
• There is a BST and below is the Pre order of the BST, What will be it’s In order 150 70 60 80 250 200 350
• Which is correct version of delete query in SQL
• Fill in the blanks R _________are the same as the arrays in C language which are used to hold ____________data values of the same type