You should create a separate Homework #$1$ Answers document and type your answers into

that document. When you are finished, convert your Answers document to PDF and submit

on D$2$L for Homework #$1.$

In the network above, routers R$1,$ R$2,$ R$3$ and R$4$ are running RIPv$2$ with Split Horizon

enabled. R$1$ has serial links to R$2,$ R$3$ and R$4$ as shown. R$2,$ R$3$ and R$4$ have links to other

routers that are not shown. Router R$1$ has just powered up and its routing table is empty.

R$1$ has just received the following RIPv$2$ packets from R$2,$ R$3$ and R$4.$ Note that these are

all Cisco routers, so each of these routers incremented the hop counts before they sent these

RIPv$2$ packets to R$1.$

a$)(4$ points$)$ Given the contents of the RIPv$2$ message from R$4,$ what is the Metric

value for Subnet $66\mathrm{.}1.\frac{0\mathrm{.}0}{16}$ in the $R4$ routing table?

b$)(10$ points$)$ Show the contents of the $R1$ routing table, for each of the columns below,

after it has processed these three RIPv$2$ packets. Be sure to include the directly

connected subnets as well as the remote subnets learned through RIP. The "Code"

values will either be $\text{'}$C$\text{'}$ or $\text{'}R\text{'}.$ The "Next Hop IP$"$ values must be IP addresses.

c$)(6$ points$)$ After these changes to its routing table, Router R$1$ now sends a new RIPv$2$

message out interface $S\frac{0}{0}$ to Router R$4.$ Show the contents of this message.

$(5$ points$)$ Name one advantage of implementing Dynamic Routing rather than Static

Routing.