Explain ios switching applications?

787

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

766

---

What do you know about home screen of ios?

779

---

Does ios supports multi-tasking functionality?

865

---

What is the mean of not running state in ios?

764

---

What are selectors in objective-c?

767

---

Explain what is storyboard?

725

---

Explain the significance of autorelease?

808

---

Explain mutable and immutable types in objective c programming language?

778

---

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

727

---

Explain me what is arc? How it works?

760

---

What is retain counts?

712

---

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

801

---

What are the features is ios 6?

797

---

Explain me what is fast enumeration?

814

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