What are all the difference between iOS3, iOS4 and iOS5?

784

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What is delegate pattern in iOS?

860

---

What are the App states in iOS operating system? Explain them

735

---

Define view object in iOS operating system?

739

---

Explain how the push notification works in iOS operating system?

824

---

Explain the steps involved in submitting the App to App-Store in iOS operating system?

841

---

Name the app sate which it reaches briefly on its way to being suspended in iOS operating system?

810

---

How would you create your own custom view in iOS operating system?

747

---

What are all the instruments available in Xcode in iOS operating system?

773

---

Explain your process for tracing and fixing a memory leak iOs?

818

---

What is code signing in iOS operating system?

766

---

What are layer objects and what do they represent in iOS operating system?

748

---

What is fast enumeration in iOS operating system?

804

---

What is the difference between delegates and notifications in iOS operating system?

784

---

What is dynamic typing in iOS operating system?

771

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