Answer: SIP Trunk
Explanation:
The SIP is stand for the session initiation protocol trunk is one of the service that is specifically provided by the service provider and the main purpose of the SIP trucking is to manage the VoIP call process (Voice over IP).
According to the given question, SIP is one of the protocol that allow telephony services for the communication purpose and it also offer the video, Message, media and the voice application and these process are control by using this type of technology.
Therefore, SIP Truck is the correct answer.
Without a/an Operating system. a computer is useless
True, since you do want to give out information
Answer War Chalking
Explanation: War chalking is the technique for presenting the WiFi network publicly. This signifies about the WiFi is present but not describes the manner of it , that is whether it is open connection or closed connection.
It can be used by the people in general as well as hackers . Hackers usually tend to attack and hack its security that is present.Hackers then use the WiFi network is then used for their own work after being hacked.