Practice IT Operating System Questions and Answers

• For Dynamic Memory Allocation which of the following data structures is used?
• The time at which the process arrive at the system is called as :
• Which of the following conditions is essential for applying dynamic programming to a problem?
• EPN stands for :
• ______ creates a safe and encrypted connection over less secured network such as internet.
• In which of these very few non-zero values are present ?
• World wide web is based on :
• Which of the following best describes Cyclomatic Complexity of a program?
• Which of the following statements about private members in Java is correct?
• Cocomo (Constructive Cost Model) is a regression model based on LOC where LOC is :
• Which of the following best describes the Spiral Model in software development?
• Which of the following is a key practice of Extreme Programming (XP)?
•  Which of the following best describes unit testing?
• Which of the following statements about a primary key is correct?
• A relation is in Third Normal Form (3NF) if which of the following conditions is satisfied?
• Which of the following best describes soft computing?
• Which of the following best characterizes hard computing?
• Attributes of a file can be :
• Which of the following statements about the Test-and-Set Lock (TSL) instruction is CORRECT?
• When an object that has an incoming reference is deleted or deallocated, without modifying the value of the  pointer , so that the  pointer  still point...
• 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 :