Binary Math

Comments

Post a Comment

Popular posts from this blog

Calculating IPv4 Subnets and Host

Image
VLSM (Variable length Subnet Masks) Class-based networks are inefficient The subnet mask is based on the network class Allow network administrators to define their own masks Customize the subnet mask to specific network requirements Use different subnet masks in the same classful network 10.0.0.0/8 is the class A network - 10.0.1.0/24 and 10.0.8.0/26 would be VLSM Number of subnets = 2 subnet bits Hosts per subnet = 2 host bits - 2
Read more

IPv4 Addresses

Networking with IPv4 IP Address, e.g., 192.168.1.165 Every device needs a unique IP address Subnet mask, e.g., 255.255.255.0 Used by the local device to determine what subnet it's on The subnet mask isn't (usually) transmitted across the network You'll ask for the subnet mask all the time What's the subnet mask of this network? Default gateway, e.g., 192.168.1.1 The router that allows you to communicate outside of your local subnet The default gateway must be an IP address on the local subnet Special IPv4 addresses Loopback address An address to yourself Ranges from 127.0.0.1 through 127.255.255.254 An easy way to self-reference (ping 127.0.0.1) Reserved addresses Set aside for future use or testing 240.0.0.1 through 254.255.255.254 Virtual IP addresses (VIP) Not associated with a physical network adapter Virtual machine, internal router address
Read more

Unicasts, Multicasts, and Broadcasts

Image
Unicast One station sending information to another station Send information between two systems Web surfing, file transfers Does not scale optimally for streaming media Multicast Delivery of information to interested systems One to many Multimedia delivery, stock exchanges Very specialized Difficult to scale across large networks Broadcast Send information to everyone at once One packet, received by everyone Limited scope - the broadcast domain Routing updates, ARP requests Not used in IPv6 - focus on multicast
Read more