Which tool enables the investigator to acquire the forensic image and process it in the same step?
a. Magnet DEFR
b. Magnet FTK
c. Magnet dd
d. Magnet AXIOM
ANSWER: d
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The _____ of a project is the total value of the benefits minus the total value of the costs, with both costs and benefits adjusted to reflect the point in time at which they occur.
A. net present value (NPV) B. acquisition process C. return on investment (ROI) D. payback analysis
Calculate the cardinality and minimum cost for each of the following Selection operations:
Using the Hotel schema, assume the following indexes exist: ? a hash index with no overflow on the primary key attributes, roomNo/hotelNo in Room; ? a clustering index on the foreign key attribute hotelNo in Room; ? a B + -tree index on the price attribute in Room; ? a secondary index on the attribute type in Room. nTuples(Room) = 10000 bFactor(Room) = 200 nTuples(Hotel) = 50 bFactor(Hotel) = 40 nTuples(Booking) = 100000 bFactor(Booking) = 60 nDistinct hotelNo (Room) = 50 nDistinct type (Room) = 10 nDistinct price (Room) = 500 min price (Room) = 200 max price (Room) = 50 nLevels hotelNo (I) = 2 nLevels type (I) = 2 nLevels price (I) = 2 nLfBlocks price (I) = 50 S1: ? roomNo=1 ? hotelNo=1 (Room) S2: ? type=‘D’ (Room) S3: ? hotelNo=2 (Room) S4: ? price>100 (Room) S5: ? type=‘S’ ? hotelNo=3 (Room) S6: ? type=‘S’ ? price < 100 (Room)
Write a Java statement that creates an output stream to a binary file named statistics.dat.
What will be an ideal response?
How would you write the following algebraic equation in C++?
A. c = sqrt((a+b)**2) B. c = sqrt((a^2)+(b^2)) C. c = sqrt(a^2b^2) D. You can’t do this type of math in C++.