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Network Access - Coggle Diagram
Network Access
3.2.3 Implement an IPv4 addressing scheme
Network and Host Portions
An IPv4 address is
hierarchical.
Composed of a Network portion and Host portion.
All devices on the same
network must have the
identical network portion.
The Subnet Mask
Three IPv4 addresses
Unique IPv4 address of the host.
Subnet mask
Default gateway
Identify the
network portion and host
portion.
bit in the IPv4 address
is a network bit.
Logical AND
1 AND 1 = 1
1 AND 0 = 0
0 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
notation, / followed by
the number of network
bits.
Network, Host, and Broadcast Addresses
Network Address - host portion is all
0s (.00000000)
First Host address - host portion is all 0s and ends with a 1 (.00000001)
Last Host address - host portion is all 1s and ends with a 0 (.11111110)
Broadcast Address - host portion is all 1s (.11111111)
Static IPv4 Address Assignment to a Host
Some devices like printers, servers and network
devices
Hosts in a small network
Dynamic IPv4 Address Assignment to a Host
The DHCP server provides an IPv4 address, subnet mask, default gateway, and other configuration information.
DHCP leases the addresses to hosts for a certain length of time.
IPv4 Communication
Unicast – one to one
communication.
Broadcast– one to all.
Multicast – one to a
select group.
Public and Private IPv4 Addresses
Private Addresses
Not routable
Used only in internal networks.
translated to a public IPv4 to be
routable.
Defined by RFC 1918
Private Address Blocks
10.0.0.0 /8 or 10.0.0.0 to 10.255.255.255
Special User IPv4 Addresses
Loopback addresses (127.0.0.0 /8 or
127.0.0.1)
Link-Local addresses (169.254.0.0 /16
or 169.254.0.1)
TEST-NET addresses (192.0.2.0/24 or
192.0.2.0 to 192.0.2.255)
Legacy Classful Addressing
Network addresses
Class A (0.0.0.0/8 to 127.0.0.0/8)
Class B (128.0.0.0 /16 – 191.255.0.0 /16)
Class C (192.0.0.0 /24 – 223.255.255.0 /24)
3.2.2 Convert between binary and decimal numbering system
IPv4 Addresses
IPv4 addresses are expressed in 32 binary bits divided into 4 8-bit octets
IPv4 addresses are commonly expressed in dotted decimal notation
Positional Notation
Decimal position notation
Binary position notation
Decimal to Binary Conversion
use the positional chart
First if the number is greater
than the 128 bit. If no a 0 is placed in this position. If yes then a 1 is placed in this position. The process repeats until all
positional values have been entered.
