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Which of the following statements are true?
Statement I Big data refers to no precise quantity, but generally refers to data in the range of Petabytes and Exabyte, i.e. billions to trillions of records, all from various sources. Big data is generated much faster. than traditional data in much larger quantities.
Statement II Big data interests industries because they are able to learn more patterns and curious variances than smaller data sets, with the capability to provide valuable insights into consumer behaviour, weather systems, financial market activity, or other phenomena.
Statement III Various departments and product lines use various applications within most organisations and store data in separate datasets. These separate databases may contain similar data, but data from one data base to another is not always consistent. This is called data silo.
Three statements are given, followed by four conclusions numbered I, II, III and IV. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: All books are pens. All pens are erasers. All erasers are files. Conclusions: I. All pens are files. II. All pens are books. III. All files are books. IV. All files are pens.
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: All Books are Pens. All Pens are Erasers. All Erasers are Files. Conclusions: I. All Pens are Files. II. All Pens are Books. III. All Files are Books. IV. All Files are Pens.
Five delegates P, Q, R, S and T are forwarding their files to one another. P sends his file to Q, S and T, T sends his files to R while P and R exchange their files with each other. Q sends his file to S who sends his files to T. If P has to forward his files to R, then in how many ways P can forward files to R?
Each of A, B, C and D are working on number of files. The ratio of files with B and D is 8 ∶ 13. The ratio of files with A and B is 3 ∶ 4. The ratio of files with B and C is 6 ∶ 7. Which of the following cannot be total number of files with A and D together?
In the question below is given a statement followed by two courses of action numbered I and II. On the basis of the information given in the statement to be true, then decide which of the suggested courses of action logically follow(s) for pursuing. Statement: Police received a tape in which some MLA is seen taking bribe.  Course of action: I. Police must go to the MLA to talk about the tape asking him what they should do.  II. Police must try to find the person who sent the tape and should take that person directly to MLA. 
Suppose there are six files F1, F2, F3, F4, F5, F6 with corresponding sizes 150 KB, 225 KB, 75 KB, 60 KB, 275 KB and 65 KB respectively. The files are to be stored on a sequential device in such a way that optimizes access time. In what order should the files be stored?
State true or false: Statement: Using a two track tape, we can use a semi infinite tape to simulate an infinte tape.
In the question below, are given a statement followed by three courses of actions numbered I, II and III. On the basis of the information given, you have to assume everything in the statement to be true, and then decide which of the suggested course of action logically follow (s) for pursuing. Statement: The India Risk Survey 2017 report ranks 'Information & Cyber Insecurity' as the biggest risk facing Indian companies. Indian organizations, both public and private, had witnessed over 27,000 incidents of security threat, from January 2017 till June 2017 alone. Phishing, scanning/probing, website intrusions and defacements, virus/malicious code, ransomware, Denial of Service attacks, and data breaches are some ways in which hackers attack business websites, which can cause operational disruptions and potentially steal sensitive information. Small and medium businesses (SMBs), unfortunately, have been seeing rising incidences of cybercrime. In fact, 70 percent of cyberattacks occur at organizations with lesser than 100 employees  Courses of action: I. Mandate basic security practices and policies for all employees, such as 2-factor authentication, internet use guidelines and create and enforce rules on handling and protecting sensitive data. Conduct frequent training to sensitize employees about opening suspicious emails, encrypting their data, using strong passwords on their devices, installing security apps, and limiting activity over public Wi-Fi. Implement and enforce incident reporting to help ensure that even the smallest breach is report to management as well as the IT teams. II. Basics still matter and are some of the best defenses against viruses, malware, and other online threats. Assess the assets that are most at risk - data, servers, network - and ensure that the systems are updated with the latest security software, web browser, and operating system. Implement firewall security and run antivirus software after each update.  III. Ensure regular backup of all critical data - whether stored in-house or on the cloud. Run scheduled attack drills and stress tests to identify vulnerabilities and ensure that data restoration and business continuity are executed as planned.
In a survey of 900 students, 400 students were interviewed in TCS, 310 students were interviewed in IBM and 470 students were interviewed in Infosys. Also, 110 students were interviewed in both TCS and IBM, 80 students were interviewed in both IBM and Infosys and 140 students were interviewed in both TCS and Infosys. If 50 students were interviewed in all three companies. Then, how many students were interviewed in only TCS?