Question

The iPhone OS has four abstraction layers. -Core OS Layer -Core services Layer -Media Layer -Cocoa Touch Layer What does the Core Services Layer provide?

a) Basic Services for applications
b) Address Book, Core Location, CFNetwork, Security and SQLite
c) Graphics
d) All of the above

Answer 1

The Core Services Layer in iOS includes basic services like Address Book, Core Location, CFNetwork, Security, and SQLite that are essential for many applications.

Step-by-step explanation:

The Core Services Layer of the iPhone OS (also known as iOS) provides fundamental system services that all applications use. This layer includes essentials such as the Address Book, for dealing with contacts, Core Location, which allows apps to obtain the current location, CFNetwork, for network communications, Security services to protect data and user credentials, and support for databases through SQLite. So, the correct answer to the question would be 'b) Address Book, Core Location, CFNetwork, Security, and SQLite'