UDP offers connection-oriented services with sequencing, error recovery, and a sliding window mechanism.

Using the dependency diagram of the EMP table from previous exercise, normalize table to the third normal form (3NF). Use 1NF to 2NF and then 2NF to 3NF conversion.

Which of the following is NOT an I/O task performed by the operating system?

A. handles output to the monitor B. executes program instructions C. manages network communication D. controls information storage and retrieval