A(n) is a combination of hardware and software that filters or prevents specific information from moving between the outside world and the inside world. A(n) is a combination of hardware and software that filters or prevents specific information from moving between the outside world and the inside world.

A firewall

Explanation:

A firewall is either hardware or software that acts as a defense system for your computers against external attacks that come in form of worms, malware, or malicious actors. It does this by filtering the information that comes in from the internet. It blocks malicious and unwarranted traffic and permits wanted traffic. It acts a barrier between users in a private network and the public internet.

the major difference between the two is the objective and the reward of the game. candy crush has a puzzle theme with the objective of meeting a specific quota of points or objects, you are able to gain access to the next level and compete with peers on the process. on duolingo the objective is rather different, you are given sets of questions for you to answer for you to move to the next level and as for the reward, you are able to learn available language as this is an app developed to teach the user about other languages.