Related InterviewSolutions

• The maximum number of superkeys for the relation schema R(E,F,G,H) with E as the key is(A) 5(B) 6(C) 7(D) 8
• If the matrix A is such thatthen the determinant of A is equal to(A) 0(B) 1(C) 2(D) 3
• The product of the non-zero eigenvalues of the matrix1 0 0 0 10 1 1 1 00 1 1 1 00 1 1 1 01 0 0 0 1is ______(A) 4(B) 5(C) 6(D) 7
• The probability that a given positive integer lying between 1 and 100 (both inclusive) is NOT divisible by 2, 3 or 5 is ______ .(A) 0.259(B) 0.459(C) 0.325(D) 0.225
• Each of the nine words in the sentence ”The quick brown fox jumps over the lazy dog” is written on a separate piece of paper. These nine pieces of paper are kept in a box. One of the pieces is drawn at random from the box. The expected length of the word drawn is _____________. (The answer should be rounded to one decimal place.)(A) 3.8 to 3.9
• A FAT (file allocation table) based file system is being used and the total overhead of each entry in the FAT is 4 bytes in size. Given a 100 x 106 bytes disk on which the file system is stored and data block size is 103 bytes, the maximum size of a file that can be stored on this disk in units of 106 bytes is ____________.(A) 99.55 to 99.65(B) 100.5 to 101.4(C) 97.2 to 98.5(D) 89.1 to 91.2
• The security system at an IT office is composed of 10 computers of which exactly four are working. To check whether the system is functional, the officials inspect four of the computers picked at random (without replacement). The system is deemed functional if at least three of the four computers inspected are working. Let the probability that the system is deemed functional be denoted by p. Then 100p = _____________.(A) 11.85
• The number of people diagnosed with dengue fever (contracted from the bite of a mosquito) in north India is twice the number diagnosed last year. Municipal authorities have concluded that measures to control the mosquito population have failed in this region. Which one of the following statements, if true, does not contradict this conclusion?(A) A high proportion of the affected population has returned from neighbouring countries where dengue is prevalent(B) More cases of dengue are now reported because of an increase in the Municipal Office’s administrative efficiency(C) Many more cases of dengue are being diagnosed this year since the introduction of a new and effective diagnostic test(D) The number of people with malarial fever (also contracted from mosquito bites) has increased this year
• A graphical HTML browser resident at a network client machine Q accesses a static HTML webpage from a HTTP server S. The static HTML page has exactly one static embedded image which is also at S. Assuming no caching, which one of the following is correct about the HTML webpage loading (including the embedded image)?(A) Q needs to send at least 2 HTTP requests to S, each necessarily in a separate TCP connection to server S(B) Q needs to send at least 2 HTTP requests to S, but a single TCP connection to server S is sufficient(C) A single HTTP request from Q to S is sufficient, and a single TCP connection between Q and S is necessary for this(D) A single HTTP request from Q to S is sufficient, and this is possible without any TCP connection between Q and S
• Consider the procedure below for the Producer-Consumer problem which uses semaphores:Which one of the following is TRUE?(A) The producer will be able to add an item to the buffer, but the consumer can never consume it.(B) The consumer will remove no more than one item from the buffer.(C) Deadlock occurs if the consumer succeeds in acquiring semaphore s when the buffer is empty.(D) The starting value for the semaphore n must be 1 and not 0 for deadlock-free operation.