TESTfunda - CAT Question of the Day 02-Apr-14

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 CAT 2014
 
 
Testfunda
02-Apr-14
CAT Question of the Day
Answer the question based on the passage given below.

Computers have steadily become smaller and more powerful over the past half-century, thanks to the miniaturization of transistors. But as ever-shrinking technology crosses the threshold into the atomic realm, the laws of quantum physics suddenly take hold. While this poses serious hurdles for classical computing, it opens incredible new possibilities in the realm of quantum computing. Classical computers use binary “bits” of ones and zeros. Quantum computers will encode such bits in physical systems where we can also harness the quantum mechanical properties and obtain a more powerful system of quantum bits, or qubits. Thanks to the amazing rules of quantum mechanics, qubits can be in a “superposition” of zero and one simultaneously. Another quantum property called “entanglement,” which Einstein and others debated decades ago, has since been harnessed in laboratories, and allows us to achieve tasks such as quantum teleportation and squeezing two bits of classical information into a single qubit. Quantum teleportation allows a qubit of information to be transmitted over a distance (indeed, teleported) by sending only two bits of classical information, and has important applications in quantum communication and building robust quantum computers.

According to the passage, how do quantum computers differ from conventional computers?

OPTIONS
 
 1)
Conventional computers rely on a single, binary pieces of code of 0 or 1; quantum computers encode data as quantum bits which cannot only represent a 1 or a 0 but both a 1 and a 0 at the same time.
 2)
Conventional computers rely on conventional bits, which are single, binary pieces of code that can exist in one of two states: 0 or 1; quantum computers put together long strings of these 1s and 0s written in a specific order to tell a computer what to do.
 3)
Conventional computers rely on transistors whose miniaturization has certain limits; quantum computers have no such limits and can be made into sizes that are invisible to the naked eye.
 4)
All of the above.
Tip of the Day
Paragraph Completion questions in which the last sentence of the paragraph has been removed try to test your ability of arriving at conclusions. Choose the option which concludes or closes the paragraph in the best way possible, not an option which introduces new facts or continues an already mentioned idea.
Last year's Question of the day (01-Apr-13)
If a, b and c are three positive real numbers, find the minimum value of


OPTIONS
 
 1)6
 2)3
 3)1
 4)None of these
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