A function is a predefined formula that performs a calculation

In order to optimize performance for a compute cluster that requires low inter-node latency, which of the following feature should you use?

A. Multiple Availability Zones B. AWS Direct Connect C. EC2 Dedicated Instances D. Placement Groups E. VPC private subnets

Once in a while C++ programmer encounter “intelligence tests” which have the programmer examine some source code and make corrections or modifications to it. Here are a few challenges for you to try.

The code below is to write a dash “-” to the screen 40 times. You can replace, remove, or add one character in the code. Can you find 2 solutions? ``` int j, k = 40; for( j = 0; j < k; --j) cout << “-“; ```