Answer:
C. Sending the data using public-key encryption
Explanation:
Encryption is the only choice that provides security.
Answer:
The answer is "Option b"
Explanation:
The graphical UI is a kind of user interface, which is used in apple technology. It enables the consumers to use graphic symbols and the main symbol sound signal to communicate with electronic devices rather of text-based consumer interface, type tag commands or code navigation, and wrong option can be described as follows:
- Option a and Option c both were wrong because the command-line interface is a text-based program, and binary line access via command line.
- In option d, It is a text-based command, that is used to intact with the user, that's why it is wrong.
Answer:

Explanation:
Router. A router is a networking device typically used to interconnect LANs to form a wide area network (WAN) and as such is referred to as a WAN device. IP routers use IP addresses to determine where to forward packets. An IP address is a numeric label assigned to each connected network device.
Fям:-
I believe the correct answer is the first option. The primary difference between 3g and 4g cellular systems would be that 4g systems have faster transmission as compared to 3g. The G would mean generation. The very difference of both is their speeds.