Problem $2(5\backslash$times $2=10$ pts$).$ In the concept of protocol layering, each layer can implement certain

protocol procedures and services. Answer the following questions:

$1.$ Suppose the algorithms used to implement the protocol procedures at layer k are changed. The services remain the same. How does this impact the protocol procedures at layers k$1$ and k$+1?$

$2.$ Suppose there is a change in the service $($i$.$e$.,$ set of primitives$)$ provided by layer k$.$ How does this impact services at layers k$-1$ and k$+1?$

$($For each question, you can answer $$impacted$$ or $$not impacted$.$ If the latter, briefly how.$)$