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Chapter 3: Network Access - Coggle Diagram
Chapter 3:
Network Access
3.1.2 convert between binary and decimal
binary is number 0 and 1 only which is called bits
Positional Notation
the first row identifies the number base or radix. Decimal is 10. Binary is based on 2, therefore radix will be 2.
the 2nd row considers the position of number starting with 0. These numbers also represent the exponential value that will be used to calculate the positional value(4th row).
the 3rd row calculates the positional value by taking the radix and raising it by the exponential value of its position. Note : n^0 is always = 1
the positional value is listed in the fourth row.
binary to decimal conversion
to convert a binary IPv4 address to decimal enter the 8- bit binary number of each octet under the positional value of row 1 and then calculate to produce the decimal.
decimal to binary conversion
use the positional chart and check first if the number is greater than 128 bit. if no put 0 if yes put 1.
128 is subtract from the orignal number and the remainder is then checked against the next position (64) if its less than 64 put 0 but if its greater than 64 put 1 and number 64 is subtracted.
The process repeats until all
positional values have been entered.
3.1.3 Implement an IPv4 addressing
scheme.
Network and Host Portions
All devices on the same network must have the
identical network portion.
The Subnet Mask
-Unique IPv4 address of the host.
identifies the
network/host portion of the IPv4
address.
Default gateway -IP address of the
local router interface.
Logical AND
The Logical AND of two bits
yields the following results:
The Prefix Length
Written in slash
notation, , / followed by
the number of network
bits..
Network, Host, and Broadcast Addresses
Static IPv4 Address Assignment to a Host
Some devices like printers,
servers and network devices require a fixed IP
address.
Dynamic IPv4 Address Assignment to a Host
The DHCP server provides an
IPv4 address, subnet mask default gateway, and other
configuration information
IPv4 Communication
Unicast Transmission
1 to 1
Broadcast Transmission
1 to all
Multicast Transmission
1 to select group
Public and Private IPv4 Addresses
Private Addresses
Not routable
introduce in mid 1990s due to depletion of IPv$ address
used only internal networks
Special User IPv4 Addresses
Legacy Classful Addressing
Classless Addressing
Classful Addressing wasted addresses and exhausted the availability of IPv4
addresses.
Assignment of IP Addresses
