1.which of the following involves context switch,
a) system call b)priviliged instruction
c)floating poitnt exception
d)all the above
e)none of the above
2.In OSI, terminal emulation is done in
a)semion b)appl.. c)presenta… d)transport
3……. 25MHz processor , what is the time taken by the instruction which needs 3 clock cycles,
a)120 nano secs b)120 micro secs
c)75 nano secs d)75 micro secs
4. For 1 MBmemory no of address lines required,
a)11 b)16 c)22 d) 24
5. Semafore is used for
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