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Explain Protection mechanism.
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.
Global variables are accessible only to the batch program while external variables can be referenced from any batch program residing in the similar system library.
What is System-software? System-software is collection of system programs which perform a variety of functions, name are: file editing, IO management, recourse accounting and s
Q. Illustrate about Compact Disk Rewritable? CD-RW optical disk can be repeatedly written and overwritten same as with a magnetic disk. Even though a number of techniques have
Determine the equivalent Gray code for decimal number 6 ? Ans. The equivalent Gray code for decimal number 6 is 0101 Because the Decimal number 6 is equivalent to binary nu
(a+b-c)*(e/f)-(g-h/i)
Explain Telnet Telnet is a Remote Login.
Prove the following Boolean identities using the laws of Boolean algebra (A + B)(A + C) = A + BC Ans. (A+B)(A+C)=A+BC LHS AA+AC+AB+BC=A+AC+AB+BC OR A((C+1)+A(B+1))+BC
Explain new services of CPU Based Exchange. These new services are termed as supplementary services and several of the prominent ones are given below as: Category 1:
Explain ISDN Addressing with a example. A sub address, though a part of the ISDN address, is not seems as an integral part of the numbering scheme. Sub-address is carried in a
Explain briefly about demultiplexers?
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