Which two ports would be used to connect external devices? (Select two.)

A tool that enables two computers to establish a direct connection so that an expert can provide help is called ________

Fill in the blank(s) with correct word

Which statement is false?

a. All built-in collections are synchronized. b. Concurrent access to a Collection by multiple threads could cause indeterminate results or fatal errors. c. To prevent potential threading problems, synchronization wrappers are used around collection classes that might be accessed by multiple threads. d. A synchronization wrapper class receives method calls, adds some functionality for thread safety and then delegates the calls to the wrapped class.