When setting the table relationships, a key icon designates that field is a(n) ________

Company A and Company B both supply contractual services to a fast paced and growing auto parts manufacturer with a small local Area Network (LAN) at its local site. Company A performs in- house billing and invoices services for the local auto parts manufactacturer. Company B provides in-house parts and widgets services for the local auto parts manufacturers. Which of the following is the BEST method to mitigate security risk within the environment?

A. Virtual Private Network B. Role-Based access C. Network segmentation D. Public Key Infrastructure

Which of the following is a topology used in networks for its scalability?

A. Star B. Ring C. Bus D. Mesh