Consider the client$-$server application you have deployed in Section C$.4$ to answer the "Multiple Correct $-$ Multiple Selection" question. To score full points, select & mark all correct$/$true answers$/$assertions$.$ For each wrong answer, points are deducted from the question's score.

A$.$ The Python server is programmed to accept requests sent to its UDP port #$8888$ from any of its network adapters, including the Loopback Network adapter $"127\mathrm{.}1\mathrm{.}1\mathrm{.}1."$

B$.$ The Loopback Network is only accessible by the applications running on the same system, and the frame traffic they generate remains within this virtual network.

C$."127\mathrm{.}255\mathrm{.}255\mathrm{.}255"$ is a valid IPv. $4$ address that can be assigned to any Loopback Network adapter.

D$.$ The client$-$server application runs correctly only if the ncat client connects to the Loopback Network with the IPv. $4$ @ $"127\mathrm{.}5\mathrm{.}5\mathrm{.}5"$

E$.$ All the frames exchanged between the client$-$server are copied to the Loopback Network interface $"127\mathrm{.}0\mathrm{.}0\mathrm{.}1"$

C$\mathrm{.}4.$ Implementing the Loopback Network Testbed

On the Host connect the Python server to the Loopback network to create the network topology depicted here after.

i$)$ Updating the Python Server

Modify $"$

mySrv$.$py$"$ program so that the server:

$$ accepts requests from its virtual adapter connected the loopback network with the IPv$\mathrm{.}4$@ $"127\mathrm{.}1\mathrm{.}1\mathrm{.}1"$; $($change the "bind" statement as hinted in the source code analysis$)$;

$$ sends reply messages that are prefixed with your "student$-$id$"$ as shown here after:

"student$-$id$">$ "Client's IP@$"$ on UDP port "port#$"$ has sent a the request:

Save the updated server code as the $"$

mySrv$127.$py$"$ file.

ii$)$ Configuring the Ncat Client

Configure Ncat as a client to exchange messages via its network adapter with a specific IPv$4$@$,$ over a UDP socket bind to a specified port# using the following syntax:

ncat $-$n $-$v $-$u $-$s $n-vu$