Quantum Computing — Learn free

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Questions 1–10 of 10

1. What is the basic unit of information in a quantum computer, and how does it differ from a classical bit?
Question 1A. A qubit, which can exist in multiple states simultaneously through superposition, whereas a bit is either 0 or 1B. A byte, which holds eight classical bitsC. A quark, which is smaller than a bitD. A qubit, which can only be 0 or 1 like a classical bitE. A gate, which replaces the need for bits
2. In the house analogy for quantum computing, which concept is illustrated by a person being simultaneously present in every room until you check a room?
Question 2A. EntanglementB. SuperpositionC. InterferenceD. DecoherenceE. Scalability
3. What is entanglement in quantum computing?
Question 3A. The collapse of quantum states due to environmental interactionB. The amplification of correct outcomes and suppression of incorrect onesC. Qubits becoming so deeply connected that the state of one directly affects the state of the other, regardless of distanceD. The process of cooling qubits to near absolute zeroE. The conversion of qubits into classical bits
4. What does interference do in a quantum algorithm?
Question 4A. It introduces random noise into the computationB. It links two qubits togetherC. It cools the quantum processorD. It amplifies correct quantum outcomes and suppresses incorrect ones by manipulating probability amplitudesE. It converts the result into a classical bit
5. Which of the following is listed as an example of a quantum gate?
Question 5A. ANDB. ORC. NOTD. XORE. Hadamard
6. Which quantum algorithm is named as able to factor large numbers exponentially faster, threatening traditional encryption systems?
Question 6A. Shor's algorithmB. Grover's algorithmC. Dijkstra's algorithmD. The Hadamard algorithmE. The CNOT algorithm
7. How is the difference between classical physics and quantum physics illustrated using a die?
Question 7A. Classical physics says a die always shows six; quantum physics says it always shows oneB. In classical physics the outcome is predictable given precise knowledge of force and angle; in quantum physics outcomes are random but statistically predictable over many trialsC. Classical physics cannot describe dice at allD. Quantum physics makes the outcome fully predictable while classical physics does notE. Both describe the die identically
8. Which of the following is NOT listed as a real-world application of quantum computing?
Question 8A. CryptographyB. OptimisationC. Word processingD. Drug discoveryE. Material science
9. What is decoherence in quantum computing?
Question 9A. The design of new quantum algorithmsB. The ability to process many inputs in parallelC. The speed advantage of quantum over classical machinesD. The collapse of quantum states due to environmental interactionE. The cost saving achieved in logistics
10. What kind of environment does quantum computing infrastructure require?
Question 10A. An ordinary office desktopB. A humid, warm data centreC. Any standard cloud serverD. A mobile phone processorE. Extremely controlled environments, such as near-absolute-zero temperatures