Ch. 4 Fundamentals Of IPv4 Addressing And Routing Flashcards
Addresses used to identify a packets source and destination host computer, addressing rules also organize addresses into groups which greatly assist the writing process
IP addressing
The process of hosts and routers forwarding IP packets (layer 3 PDUs) while relying on the underlying LANs and WANs to forward the bits
IP routing
Protocol that aids routers by dynamically learning about IP address groups so that the router knows where to route IP packets so that they go to the right destination host
IP routing protocol
The network layer also relies on other utilities for TCP/IP the utility’s include domain name system (DNS) address resolution protocol (ARP) and ping
Other utilities
DNS
Domain name system
ARP
Address resolution protocol
IP focuses on the job of
Routing data
IP does not concern itself with
The physical transmission of data
IP relies on ______ ______ ______to do the physical transmission of the data
Lower TCP/IP layers
IP concerns itself with _____ _____ instead of physical details of delivering data
Logical details
Routers and end user computers called _____ in a TCP/IP network work together to perform IP routing
Hosts
The term _____ ______ is sometimes used to refer the routing process, at other times it refers to the routing protocols specifically how routing protocols select the best route among the competing routes to the same destination
Path selection
The default router is also referred to as
The default gateway
The table that lists IP address groupings is called
IP routing table
IP address groupings are made up of____ and _____
IP networks and IP subnets
The _____ ______ layer adds the appropriate header and trailer to the packet creating a frame before sending the frames over each physical network
Data link
______ dynamically learns the data link address of an IP’s host connected to a LAN
ARP (address resolution protocol)
How does a router determine which data at link address to use
Via ARP
What are the two main topics routing has covered so far
Forwarding Layer 3 packets also known as PDU
Encapsulating layer 3 packets in the later 2 frames for Transmission
____ defines network layer addresses that identify any host or router interface That connect to a TCP/IP network
IP
TCP/IP groups IP addresses together so that IP addresses used on the same physical network are part of the same group, these groups are known as _____ or ______
IP network or an IP subnet
Network layer protocols group addresses both by their _____ and by the actual_____ ______
Location
Address values
Hosts need to know the IP address of their ______ ______ so that hosts can send packets to promote destiny
Default router
Routers need to know ______ so that routers know how to forward packets to each and every IP networking IP subnet
Routes