Related InterviewSolutions

• Which of the following are used to generate a message digest by the network security protocols?(P) RSA (Q) SHA-1 (R) DES (S) MD5(A) P and R only(B) Q and R only(C) Q and S only(D) R and S only
• Given the following two statements: S1: Every table with two single-valued attributes is in 1NF, 2NF, 3NF and BCNF. S2: AB->C, D->E, E->C is a minimal cover for the set of functional dependencies AB->C, D->E, AB->E, E->C. Which one of the following is CORRECT?(A) S1 is TRUE and S2 is FALSE.(B) Both S1 and S2 are TRUE.(C) S1 is FALSE and S2 is TRUE.(D) Both S1 and S2 are FALSE.
• Consider the relation scheme R = {E, F, G, H, I, J, K, L, M, M} and the set of functional dependencies {{E, F} -> {G}, {F} -> {I, J}, {E, H} -> {K, L}, K -> {M}, L -> {N} on R. What is the key for R?(A) {E, F}(B) {E, F, H}(C) {E, F, H, K, L}(D) {E}
• Which one of the following is FALSE?(A) User level threads are not scheduled by the kernel.(B) When a user level thread is blocked, all other threads of its process are blocked.(C) Context switching between user level threads is faster than context switching between kernel level threads.(D) Kernel level threads cannot share the code segment
• Consider the following four schedules due to three transactions (indicated by the subscript) using read and write on a data item x, denoted by r(x) and w(x) respectively. Which one of them is conflict serializable.(A) A(B) B(C) C(D) D
• Four fair six-sided dice are rolled. The probability that the sum being 22 is X/1296. The value of X is ________(A) 7(B) 8(C) 9(D) 10
• Suppose you break a stick of unit length at a point chosen uniformly at random. Then the expected length of the shorter stick is ________(A) 0.24 to 0.27(B) 0.15 to 0.30(C) 0.20 to 0.30(D) 0.10 to 0.15
• Identify the correct order in which the following actions take place in an interaction between a web browser and a web server.The web browser requests a webpage using HTTP.The web browser establishes a TCP connection with the web server.The web server sends the requested webpage using HTTP.The web browser resolves the domain name using DNS.(A) 4,2,1,3(B) 1,2,3,4(C) 4,1,2,3(D) 2,4,1,3
• Consider two processors P1 and P2 executing the same instruction set. Assume that under identical conditions, for the same input, a program running on P2 takes 25% less time but incurs 20% more CPI (clock cycles per instruction) as compared to the program running on P1. If the clock frequency of P1 is 1GHz, then the clock frequency of P2 (in GHz) is _________.(A) 1.6(B) 3.2(C) 1.2(D) 0.8
• Which of the regular expressions given below represent the following DFA? I) 0*1(1+00*1)*II) 0*1*1+11*0*1III) (0+1)*1 (A) I and II only(B) I and III only(C) II and III only(D) I, II, and III