Combinations of spaces and special characters can be used in domain names of uniform resource locators (urls).

a. True

b. False

A Uniform Resource Identifier (URI) is a compact sequence of characters that identifies an abstract or physical resource.

The statement that combinations of spaces and special characters can be used in domain names of uniform resource locators (URLs) is false. Correct answer: B

The specifications for URLs are clealy defined by The Internet Engineering Task Force (IETF).