Sounds are represented as continuous ____ sound waves.

Which OSI layer is responsible for encryption and decryption of data?

a. Application b. Presentation c. Session d. Network

An administrator has just installed a VoIP system and has noticed during peak times that calls are dropped. Which of the following would an administrator implement to alleviate the problem?

A. QoS B. SSL VPN C. Load balancing D. Fault tolerance