Reginald Smith
Networking concepts and apps
Keller school of graduates

* R17. What is the difference between a permanent address and a care-of address? Who assigns a care-of address?
The permanent address is the address of the mobile device this is the home of the device. While the care of address is the address that a mobile device gets when you move into someone else’s network. The take care of address is assigned by whoever network that the device is on.

* R1. What are the differences between message confidentiality and message integrity? Can you have confidentiality without integrity? Can you have integrity without confidentiality? Justify your answer.
Message confidentiality us when two or more host communicate under secure circumstances using an encryption. Message integrity is the state of the data that is being transported whether it has been compromised. Yes you can have integrity without confidentiality using hash or sums in your message. You can but what is the point the purpose of the message confidentiality is so it cannot be sniffed out which relates to the integrity of the data .

* R3. From a service perspective, what is an important difference between a symmetric-key system and a public-key system?
From a service perspective the difference between a symmetric-key system and a public-key system the thing that stands out to me the most is in a symmetric key system both the person sending and the person receiving know the key while in a public key system the decryption key is only know by the receiver.

* R29. Stateful packet filters maintain two data structures. Name them and briefly describe what they do.

The two structures that the stateful packet filer maintains is stateful and stateless IP. The static IP is used as sort of a traffic management and the stateful is like router configuration software.