Implications of Multilayer Protocols

Question 1

What does multilayer protocol mean

Answer 1

Protocols can be encapsulated within others

Question 2

Example of Multilayer Protocol

Answer 2

TCP/IP is a multilayered protocol. HTTP is encapsulated with TCP which is in turn encapsulated in IP which is in Ethernet. Additional security protocols can also be encapsulated in this chain (e.g. TLS between HTTP and TCP which is HTTPS)

Question 3

Benefits of Multilayer Protocols

Answer 3

Many different protocols can be used at higher layers
Encryption can be incorporated
Provides flexibility and resiliency in complex networks

Question 4

Multilayer Disadvantages

Answer 4

Nothing stops an added layer from being hidden
Encapsulating can be used to bypass filters
Logical network segments can be traversed