I'm bit confused regarding the "Alice and Bob receive one qubit each from an entangled pair of qubits". For example, Alice has 2 qubits = |0⟩, |1⟩, and Bob has 2 qubits = |0⟩, |1⟩, After superposition>>entangled pair generated, i.e., a qubit pair = 1/sqrt (2) [|00⟩ and |11⟩] is formed. What Alice and bob receive at their ends after entanglement? will appreciate to share diagram of qubits received at both ends.

If Alice and Bob receive one qubit each from an entangled pair of qubit. How come it is known or measured? as it is stated that measurement collapse the qubits states.