Explain ios switching applications?

851

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If any app can run in the background, what about battery life?

820

---

What do you know about home screen of ios?

824

---

Does ios supports multi-tasking functionality?

916

---

What is the mean of not running state in ios?

823

---

What are selectors in objective-c?

832

---

Explain what is storyboard?

779

---

Explain the significance of autorelease?

851

---

Explain mutable and immutable types in objective c programming language?

844

---

Explain "private", "protected" and "public"?

793

---

Explain me what is arc? How it works?

834

---

What is retain counts?

774

---

Who calls the main function of app during the app launch cycle in ios?

854

---

What are the features is ios 6?

859

---

Explain me what is fast enumeration?

880

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