BB Net+ Ch9 Flashcards
What does routing refer to? Pg 278
Taking a packet from one device on one network and sending it to another device on a different network.
What must a router know in order to be capable of routing packets? Pg 279
Destination network address, neighbor routers from which it can learn about remote networks, possible routes to all remote networks, the best route to each remote network, and how to maintain and verify routing information.
What is a routing table? Pg 279
A map of the internetwork that describes how to find remote networks that are not directly connected to the router.
Static routing vs dynamic routing? Pg 279
Static routing requires someone hand-typing all network locations into the routing table. Dynamic routing is a protocol that communicates with the protocols of the surrounding routers which exchange information on all the routers they know and enters that information into the routing table, dynamic routing automatically updates the routing table when changes in the internetwork occur.
What does it mean when a routing table is converged(a steady state)? Pg 280
All the routing tables in the network are complete. Being complete refers to the routing table including information about all the networks in the internetwork.
What is the simplest way of describing routing in an example of Host_A routing to Host_B? Pg 281
Host_A pings Host_B’s IP address.
What is the first thing that happens when a packet is created on the host? Pg 281
ICMP creates an echo request payload
What happens after ICMP creates an echo request payload? Pg 281
ICMP hands the payload to IP, which then creates a packet.
What is included in the packet that IP creates after receiving the payload? Pg 281
At a minimum the packet contains an IP source address, an IP destination address, and a Protocol field with 01h.
