Problem B$.$ The following packets have arrived at a router $(45$ points$).$

Arriving Packet $1$: Arriving Packet $2$: Arriving Packet $3$:

Destination IP Address $188\mathrm{.}16\mathrm{.}9\mathrm{.}35$ Destination IP Address $144\mathrm{.}156\mathrm{.}5\mathrm{.}44$ Destination IP Address $52\mathrm{.}116\mathrm{.}19\mathrm{.}212$

Table $1$ shows this router$$s current routing table content. Find the next$-$hop router for each arriving packet using the $3-$step routing decision rules. Explain your reasoning.

Table $1$: Routing Table

Row

$12345678910111213141516171819202122$

Note: $1.2.$

Destination IP of Arriving Packet

$188\mathrm{.}16\mathrm{.}9\mathrm{.}35144\mathrm{.}156\mathrm{.}5\mathrm{.}4452\mathrm{.}116\mathrm{.}19\mathrm{.}212$

Destination Network $130\mathrm{.}166\mathrm{.}179\mathrm{.}052\mathrm{.}116\mathrm{.}20\mathrm{.}01140\mathrm{.}186\mathrm{.}35\mathrm{.}068\mathrm{.}5\mathrm{.}44\mathrm{.}0188\mathrm{.}16\mathrm{.}9\mathrm{.}082\mathrm{.}4\mathrm{.}2\mathrm{.}5\mathrm{.}064\mathrm{.}16\mathrm{.}0\mathrm{.}0197\mathrm{.}14\mathrm{.}0\mathrm{.}0144\mathrm{.}156\mathrm{.}0\mathrm{.}0194\mathrm{.}0\mathrm{.}0\mathrm{.}0167\mathrm{.}94\mathrm{.}35\mathrm{.}0196\mathrm{.}5\mathrm{.}0\mathrm{.}064\mathrm{.}16\mathrm{.}0\mathrm{.}0144\mathrm{.}156\mathrm{.}5\mathrm{.}0194\mathrm{.}59\mathrm{.}0\mathrm{.}0188\mathrm{.}16\mathrm{.}0\mathrm{.}0194\mathrm{.}59\mathrm{.}72\mathrm{.}0197\mathrm{.}14\mathrm{.}0\mathrm{.}052\mathrm{.}116\mathrm{.}18\mathrm{.}0116\mathrm{.}72\mathrm{.}59\mathrm{.}0144\mathrm{.}156\mathrm{.}5\mathrm{.}00\mathrm{.}0\mathrm{.}0\mathrm{.}0$

Mask

$255\mathrm{.}255\mathrm{.}255\mathrm{.}0(/24)255\mathrm{.}255\mathrm{.}255\mathrm{.}0(/24)255\mathrm{.}255\mathrm{.}255\mathrm{.}0(/24)255\mathrm{.}255\mathrm{.}255\mathrm{.}0(/24)255\mathrm{.}255\mathrm{.}255\mathrm{.}0(/24)255\mathrm{.}255\mathrm{.}255\mathrm{.}0(/24)255\mathrm{.}255\mathrm{.}0\mathrm{.}0(/16)255\mathrm{.}255\mathrm{.}0\mathrm{.}0(/16)255\mathrm{.}255\mathrm{.}0\mathrm{.}0(/16)255\mathrm{.}0\mathrm{.}0\mathrm{.}0(/8)255\mathrm{.}255\mathrm{.}255\mathrm{.}0(/24)255\mathrm{.}255\mathrm{.}0\mathrm{.}0(/16)255\mathrm{.}255\mathrm{.}0\mathrm{.}0(/16)255\mathrm{.}255\mathrm{.}255\mathrm{.}0(/24)255\mathrm{.}255\mathrm{.}0\mathrm{.}0(/16)255\mathrm{.}255\mathrm{.}0\mathrm{.}0(/16)255\mathrm{.}255\mathrm{.}255\mathrm{.}0(/24)255\mathrm{.}255\mathrm{.}0\mathrm{.}0(/16)255\mathrm{.}255\mathrm{.}255\mathrm{.}0(/24)255\mathrm{.}255\mathrm{.}255\mathrm{.}0(/24)255\mathrm{.}255\mathrm{.}255\mathrm{.}0(/24)0\mathrm{.}0\mathrm{.}0\mathrm{.}0(/0)$

Metric $($Hop Count$)$

$--$

Next$-$Hop Router Local

$4$ A $6$ C $5$ C $8$ D $6$ C $3$ A $2$ C $3$ E $4$ B $4$ D $6$ A $4$ C $5$ B $8$ A $7$ C $8$ D $4$ A

$10$ A $5$ E $4$ C $--$ A

The outgoing router interface column is omitted from the table. Row $22$ shows the default route.

All Rows that Match

A Row

Selected

Next Hop Router

Reason Problem B$.$ The following packets have arrived at a router $(45$ points$).$

Arriving Packet $1$: $\backslash (\backslash$quad $\backslash )$ Destination IP Address $188\mathrm{.}16\mathrm{.}9\mathrm{.}35$

Arriving Packet $2$: $\backslash (\backslash$quad $\backslash )$ Destination IP Address $144\mathrm{.}156\mathrm{.}5\mathrm{.}44$

Arriving Packet $3$: $\backslash (\backslash$quad $\backslash )$ Destination IP Address $52\mathrm{.}116\mathrm{.}19\mathrm{.}212$

Table $1$ shows this router's current routing table content. Find the next$-$hop router for each arriving packet using the $3-$step routing decision rules. Explain your reasoning.

Table $1$: Routing Table

Note: $1.$ The outgoing router interface column is omitted from the table.

$2.$ Row $22$ shows the default route.