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Domain 1.0 Network Technologies 20%
Domain 1.3 Identify Address Format
Computer Networking
Undergraduate 4

Additional Computer Networking Flashcards




3 IP addresses classes (Public)
Class Range
A 1-126
B <128-191
C 192-223

NOTE: 127.x.x.x is reserved for loopback testing on the local system and is not used on live systems.

IP address for private networks
Definition - - -

Every IP address can be broken down into 2 parts, the Network ID(netid) and the Host ID(hostid).


All hosts on the same network must have the same netid. Each of these hosts must have a hostid that is unique in relation to the netid.


IP addresses are divided into 4 octets with each having a maximum value of 255. We view IPv4 addresses in decimal notation such as, but it is actually utilized as binary data.


The previous information on TCP/IP has referred to IPv4, however, this addressing scheme has run out of available IP addresses due to the large influx of internet users and expanding networks.


As a result, the powers that be had to create a new addressing scheme to deal with this situation and developed IPv6. This new addressing scheme utilizes a 128 bit address (instead of 32) and utilizes a hex numbering method in order to avoid long addresses such as The hex address format will appear in the form of 3FFE:B00:800:2::C for example.

MAC Addressing

Also known as hardware address or ethernet address, A MAC address is a unique code assigned to most networking hardware.


MAC Addresses are in a 48-bit hexidecimal format such as 00:2f:21:c1:11:0a.


They are used to uniquely identify a device on a network, and for other functions such as for being authenticated by a DHCP server.

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