Indian Institue of Management 2000 M.B.A CAT - Question Paper

(3) 2 aluminium-oxide barriers are polarised in the identical direction.
(4) 2 aluminium-oxide barriers are polarised in opposite directions.


20. A major barrier on the way to build a full-scale memory chip based on MTJs is
(1) the low sensitivity of the magnetic memory elements.
(2) the thickness of aluminium oxide barriers.
(3) the need to develop more reliable and far smaller magnetic memory chips.
(4) all of the above.

21. In the MTJs approach, it is possible to identify whether the topmost layer of the magnetised memory element is storing a zero
or 1 by
(1) measuring an element's resistance and thus determining its magnetic orientation.
(2) measuring the degree of disruption caused by radiation in the elements of the magnetic memory.
(3) magnetising the elements either clockwise or anti-clockwise.
(4) measuring the current that flows through the sandwich.


22. A line of research which is trying to build a magnetic chip that can both store and manipulate information, is being pursued by
(1) Paul Freitas (2) Stuart Parkin (3) Gary Prinz (4) None of these


23. Experimental research currently underway, using rows of magnetic dots, every of which could be polarised in 1 of the two
directions, has led to the demonstration of
(1) working of a microprocessor.
(2) working of a logic gate.
(3) working of a magneto-resistance based chip.
(4) working of a magneto tunnelling-junction (MTJ) based chip.


24. From the passage, which of the subsequent cannot be inferred?
(1) Electronic memory chips are faster and non-volatile.
(2) Electronic and magnetic storage technologies play a complementary role.
(3) MTJs are the more promising idea, compared to the magneto-resistance approach.
(4) Non-volatile Electronics is the company set up to commercialise the GMR chips.




PASSAGE IV
The story starts as the European pioneers crossed the Alleghenies and started to settle in the Midwest. The land they obtained was
covered with forests. With incredible effort they felled the trees, pulled the stumps and planted their crops in the rich, loamy soil.
When they finally reached the western edge of the place we now call Indiana, the forest stopped and ahead lay a thousand miles of

Earning:   Approval pending.