Computer networking

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Across
  1. 3. a computer or computer program which manages access to a centralized resource or service in a network
  2. 5. the process of converting information or data into a code, especially to prevent unauthorized access.
  3. 7. the practical application of knowledge, tools, and methods to solve problems and improve lives
  4. 10. a person responsible for carrying out the administration of a business or organization
  5. 11. a global network of linked computers, servers, phones, and smart appliances
  6. 12. physical connections (hardware) and virtual endpoints (software) used for data transfer and communication
Down
  1. 1. a system of rules that explain the correct conduct and procedures
  2. 2. a desktop computer or workstation that is capable of obtaining information and applications from a server.
  3. 4. a group or system of interconnected people or things
  4. 6. a unique address that identifies a device on the internet or a local network
  5. 8. protect (a network or system) from unauthorized access with a firewall.
  6. 9. a range of frequencies within a given band, in particular that used for transmitting a signal