Infosys Placement Papers - Computer science concepts - part 1
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Here are some computer science concepts questions from Infosys Placement Papers
1) In operating systems Which of the following actions trigger context switching ?
a) system call
b) divide by zero exceptions
c) all of the above
Answer is system call
2) No of address lines required for 1 Mega Bytes of memory is
a) 20
b) 10
c) 12
Answer is 20
3) In Open Systems Interconnect model, which of the following layers is responsible for
terminal emulation?
a) Application layer
b) Presentation layer
c) Transport layer
Answer is Application layer
4) What is the minimum value that can be stored in 8 bits using signed int datatype ?
a) -255
b) -128
c) -127
Answer is -128
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