Explain services, their relationship to the OSI model, and potential vulnerabilities.

Explanation should include

• identifying the protocols used and the level of the OSI model
• defining the term serviceas an app running on a computer
• understanding
  • DNS
  • email services
  • printing services
  • file distribution systems and services
  • directory services
  • web services
  • wireless sensor network.

Process/Skill Questions:

• What is the definition of service as it applies to computer information systems?
• What are the potential vulnerabilities in services?
• What is the TCP, and how is it related to network services?
• What is the purpose of a DNS service?
• What services provide file transmission?