IBM Fundamentals of Quantum Computation Using Qiskit v0.2X Developer

QUESTION NO: 1
In the quantum circuit, choose the best option to display the plot given below?
q = QuantumRegister(3,'q')
qc = QuantumCircuit(q)
qc.h(q[0:3])
qc.measure_all()
qasm_sim = BasicAer.get_backend('qasm_simulator')
result = execute (qc, qasm_sim). result ()
counts = result.get_counts()

A.

B.

C.

D.

Correct Answer: D

QUESTION NO: 2
Which Qiskit component is primarily focused on researching and improving quantum algorithms?

A. Qiskit Aqua B. Qiskit Ignis C. Qiskit Aer D. Qiskit Terra

Correct Answer: A

QUESTION NO: 3
Given this code, which two inserted code fragments result in the state vector represented by this Bloch sphere?
qc = QuantumCircuit(1,1)
# Insert code fragment here
simulator = Aer.get_backend('statevector_simulator')
job = execute(qc, simulator)
result = job.result()
outputstate = result.get_statevector(qc)
plot_bloch_multivector(outputstate)

A. qc.ry(math.pi, 0) B. qc.rx(math.pi / 2, 0) C. qc.h(0) D. qc.rx(math.pi / 2, 0)
qc.rz(-math.pi / 2, 0) E. qc.ry(math.pi / 2, 0)

Correct Answer: C,E

QUESTION NO: 4
Given Quantum Circuit
qc= QuantumCircuit(2)
qc.h(0)
qc.h(1)
to run the above quantum circuit 512 times in the qasm_simulator, choose the best option in the given below?

A.

B.

C.

D.

Correct Answer: A

QUESTION NO: 5
What is the command used to retrieve the last run job from a backend?

A. backend.retrieve_job()[0] B. backend.retrieve_job()[1] C. backend.jobs()[-1] D. backend.jobs()[0]

Correct Answer: D

QUESTION NO: 6
What is a qubit?

A. A unit of quantum information in quantum computing B. A quantum logic gate C. A type of quantum error correction code D. A classical bit used in quantum computing

Correct Answer: A

QUESTION NO: 7
What will be the output of the result variable in the below snippet?
q = QuantumRegister(1,'q')
qc = QuantumCircuit(q)
qc.z(0)
backend_unitary = BasicAer.get_backend('unitary_simulator')
result = execute(qc,backend_unitary).result().get_unitary(decimals=3)

A.

B.

C.

D.

Correct Answer: C

QUESTION NO: 8
Which gate is commonly used for flipping the state of a qubit if it is in state |1> and leaving it unchanged if it's in state |0>?

A. CNOT gate B. Hadamard gate C. Pauli-X gate D. Toffoli gate

Correct Answer: C

QUESTION NO: 9
What is the purpose of executing a quantum experiment on a simulator?

A. To measure the performance of quantum hardware B. To generate random numbers efficiently C. To validate quantum algorithms using classical computing resources D. To study the behavior of classical algorithms

Correct Answer: C

QUESTION NO: 10
Which gate is typically used to reset a qubit's state to |0> in a quantum circuit?

A. T gate B. Pauli-Z gate C. Hadamard gate D. Reset gate

Correct Answer: B

QUESTION NO: 11
In quantum computing, what does the term "quantum supremacy" refer to?

A. Ability to create quantum entanglement B. Advanced quantum cryptography techniques C. Achieving ultimate quantum error correction D. Superior speed of quantum computers over classical ones

Correct Answer: D

QUESTION NO: 12
In quantum computing, what is the significance of multiple measurements of the same qubit?

A. It helps in reducing the effects of quantum noise B. It ensures quantum entanglement among qubits C. It improves quantum gate efficiency D. It accelerates the overall quantum computation process

Correct Answer: A

IBM Fundamentals of Quantum Computation Using Qiskit v0.2X Developer - C1000-112 Exam Questions