Which Core Audio Services framework handles positional and lowlatency audio services in iPHone OS 4.0?

What are universal binaries in Xcode?

Which type of audio files has NO size restriction?

What will be the return value of CFHTTPMessageApplyCredentials function of CFHTTPMessage class if the authentication is successful?

Consider the following code with 2 alternatives of vector operator for OpenGL ES: highp float f0,f1; highp vec4 v0, v1; Alternative 1: v0 = (v1*f0)*f1; Alternative 2: v0 = v1 * (f0 * f1); Which alternative demonstrates proper use of vector operations?

When you send an object a retain message in Memory Management using Objective-C, what will happen?

Which is not a valid icon size for any iOS device (iPhone, iPod, iPad)?

Which framework is needed to round corners of UILabel?

Which will change the placeholder text color in UITextField?

Which is not a valid UIGestureRecognizer?

Correct way to print out stack/trace to the console/log in Cocoa application?