You are a networking specialist who has been asked to look into some network-related problems for a small business. the company began experiencing problems after moving into new premises and hiring additional employees. you find the network consists of a single asymmetric digital subscriber line (adsl) router. some employees have no network connection problems, while others cannot connect to the network using either the wireless or fixed ethernet cables. what is the most likely cause of the problems? a. physical layer connectivity issuesb. transport layer issuesc. pc configurationd. internet protocol (ip) addressing issues