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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.
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Public Key Encryption A cryptographic system that uses two-keys-a public key known to everyone and a private or secret key known only to the recipient of the message. An si
An 8-bit successive approximation ADC has a resolution of 20mV. What will be its digital output for an analog input of 2.17V? Ans: Given data Resolution =20mv Analog input =2.
Give the solutions for critical section problem? A solution to the critical section problem must specify the subsequent requirements. (a) Mutual exclusion (b) Progress (c)
An experts systems must perform well that is achieve the same levels of performance in the domain of interest that human experts can achieve. But simply producing good so
Write a script called addnames that is to be called as follows, where classlist is the name of the classlist file, and username is a particular student''s username. ./addnames cla
The linkage section is part of a known as program that 'links' or maps to data items in the calling program are working storage. It is the part of the called program where these sh
What is full form of BDC Session? Batch Data Communication Session.
For this machine there can be two more possible addressing modes in addition to direct andimmediate. Opcode field of an instruction is a group of bits which define various pro
CLASSIFICATION OF DIGITAL COMPUTER Computer are classified under a number of factors.Some people classify them according to their processing speed.main memory,technology used
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