Explain the difference between stack and heap memory?
Explain the difference between inheritance and category?
What is gcd ios?
Does ios support multiple inheritance?
What is the difference between synchronous & asynchronous task in ios?
What's fast enumeration?
Explain the difference between bounds and frame?
Is the object retained if I call performSelector:withObject:afterDelay:?
What is the difference between 'assign' and 'retain' keyword?
Arc is compile time or run time feature?
What are some common execution states in ios?
Are the nsmanagedobjectcontext queues serial or concurrent?
What is the purpose of reuseidentifier? What is the benefit of setting it to a non-nil value?