IPv4 - ANS connectionless (the sender doesn't know if the receiver is present or if the packet arrived or if the receiver can read the packet), unreliable (IP does not have the capability to manage and recover from undelivered or corrupt packets, so other protocol layers manage reliability), med...
, IPv4 - ANS connectionless (the sender doesn't know if the receiver is present or if the packet
arrived or if the receiver can read the packet), unreliable (IP does not have the capability to
manage and recover from undelivered or corrupt packets, so other protocol layers manage
reliability), media independent
32 bits/4 bytes - ANS Key piece of the IP Packet Header, length of IPv4 header
Type of service - ANS Key piece of the IP Packet Header, 8 1-bit fields, QoS, DSCP
Flag and Fragment Offset - ANS Key piece of the IP Packet Header, used in reconstruction of
K
any fragments
Time to Live - ANS Key piece of the IP Packet Header, maximum hops before undeliverable
C
Protocol - ANS Key piece of the IP Packet Header, upper layer protocol (TCP/UDP)
LO
Source and destination address - ANS Key piece of the IP Packet Header, the two 32 bit
binary values
Network and host - ANS two parts of an IPv4 address
YC
Default gateway - ANS the address of the router interface, must be on the same network as all
of the hosts
Address resolution - ANS the process of mapping a hardware address to a higher-layer
protocol address (maps IPv4 address to specific MAC address)
D
CIDR Notation - ANS putting a slash after an IPv4 address that represents the number of
network bits, also known as classless routing
U
Layer 2 - ANS MAC addresses are at this layer
Layer 3 - ANS Network address are at this layer
ST
NAT - ANS allows hosts in a private network to use a different IP address to access hosts
and/or services on an external network, can be applied on source address or destination
address
Inside local address - ANS an RFC 1918 address assigned to a host on an inside network
Inside global address - ANS a valid public address that the host on the inside network is
assigned as it exits the router
Outside global address - ANS a reachable IP address assigned to a host on the Internet
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