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Explain difference between Security and Protection?
Protection mechanism: The subsequent mechanisms are commonly utilized for protecting files having programs and data.
(a) Access controls lists (ACL's) (b) Capability lists (C- lists)
These lists are utilized to make sure that uses only access files that are explicitly authorized access. These files contain
(i) files created by a user herself/himself
(ii) files owned by others, for that a user process explicit access privileged granted through other owners.
Security mechanisms: Authentication is the main security mechanism. Authentication is the function of verifying the identity of a user. Authentication is classically performed by passwords at login time. The system stores the password information into a system as place as pair of the form (password info, user id), the password information is protected through encryption.
The Towers of Hanoi Problem Towers of Hanoi problem is described. There are three pegs on which disks are "threaded" (there are holes in the disks to allow them to be placed on
Q. Sequence of micro -operations to perform a specific function? A digital system executes a sequence of micro-operations on data stored in registers or memory. Specific sequen
Advantages of EDI 1. EDI replaces paper transactions with electronic transactions therefore it saves times and speeds up transactions. 2. It gives a legal record of busine
Explain micro programmed control. Ans: A micro programmed control unit is made around storage till is called a control store where all the control signals are stored in a prog
Superscalar architecture was designed to increase the speed of the scalar processor. But it has been realized it's not easy to apply. Subsequent are a number of problems faced in t
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Q. Addition of array elements using two processors? In this example we have to find sum of all elements of an array A of size n. We will divide n elements in 2 groups of roughl
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