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mind map topic 3.1 - Coggle Diagram
mind map topic 3.1
3.2.3
network and host portion
- composed of a network portion and host portion
- all devices on the same network must have the identical network portion.
the subnet mask
- unique IPv4 address of the host.
- subnet mask - identifies the network of the IPv4 address
- default gateway - IP address of the local router interface
logical AND
- used to determine the network address
- the logical AND of two bits yield
1 AND 1 = 1
0 AND 0 = 0
1 AND 0 = 0
0 AND 1 = 0
the prefix length
- shorthand method of expressing the subnet mask
- equals the number of bits in the subnet mask set to 1
- written in slash/ followed by the number of network bit
network , host and broadcast address - types of address in network 192.168.10.0
- network address host portion all is 0(00000000)
- first host address all 0 and end with a 1 (00000001)
- last host portion all is 1 and ends with a 0 (11111110)
-broadcast address all is 1 (11111111)
static IPv4 address assignment to a host - some device like printers server and network require a fixed IP address
dynamic IPv4
- most network use dynamic host configuration protocol (DHCP) to assign IPv4
- DHCP provides an IPv4 address , subnet mask, default gateway
- if the host is powered down or taken off the network , the address is returned to the pool for reuse
IPv4 communication
unicast transmission - one to one communication . use the address of the destination device as the destination address
broadcast transmission
- one to all communication . message sent to everyone in the LAN (broadcast domain)
- destination IPv4 address has all ones in the host portion
multicast transmission
- one to a select group. 224.0.0.0 to 239.255.255.255 address reserved for multicast
- routing protocols use multicast transmission to exchange routing information
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