Module 4 Flashcards
(11 cards)
IPv4 Subnetting
is a logical subdivision of an IP network. The practice of dividing a network into two or more networks. Each IP class is equipped with its own default subnet mask which bounds that IP class to have a prefixed number of Networks and Hosts per network.
Network ID
is the portion of an IP address that identifies the TCP/IP network on which a host resides. Ex 192.168.1.0
Subnet Mask
is a 32-bit number created by setting host bits to all 0s and setting network bits to all 1s. Ex: 0.0.0.0 or 255.255.255.255
Usable IP Address
IP addresses are available to use in a network before the broadcast address. Ex. 192.168.1.2 - 126
Broadcast Address
is an IP address that is used to target all systems on a specific subnet network instead of single hosts. Last available IP address before going to next network ID. Ex 192.168.1.127
Bit Identification Technique - Bit
to use the bit string to know your subnet ID & sub host. Ex 128,64,32,16,8,4,2,1
Subnetting Classes
Class A Range 1-126 default mask 255.0.0.0
Class B Range 128-191 default mask 255.255.0.0
Class C Range 192-223 default mask 255.255.255.0
Note 127.0.0.0 used for looping back to you.
Subnetting
The practices of dividing a network into two or more networks making them bigger. Summarizes all IP @ routes into 1 IP @ by route aggregation. Border Gate Protocol - BGP is used.
Static IP Address
when you manually assign IP @s to each divide. Which can be difficult to manage if a large network, more secure compare to DHCP. Used on Server, souter, & switches where IP @ should not chage.
Dynamic IP Address
IP @’s is assigned automatically & quickly. DHCP keeps a record of all assigned IPs. Used for hosts, phones, & other network nodes that don’t need a static IP @. DHCP has optional features that can automatically assign devices to a dedicated server.
IPv6
New IP addressing structure. 128 bit @ represented as 32 hex bits. Separate from Ipv4.
