Archive for October, 2009
What You Need To Know About DHCP For The CCENT Exam
DHCP stands for Dynamic Host Configuration Protocol DHCP is used to automatically assign IP Addresses to computers DHCP also will assign the computer’s default gateway, subnet, and DNS servers When a computer starts up it asks the DHCP server for an IP Address The DHCP server checks its range or pool of IP Addresses and [...]
Learn About IP Address Classes For The CCENT Exam
Assigning IP Address to a class is called classful addressing. ARIN – American Registry for Internet Numbers manages the allocation of addresses. There are five different types of classes: Class A: Created to allow very large networks The first octet is used to define the network The first bit has to be: 0 Range: 1 [...]
Learn About Wide Area Networks For The CCENT Exam
A WAN is a network that extends beyond the scope or location of a LAN. In order for WANs to function they require the resources of an ISP to span their long distances. Why Are WANs Important? WANs are usually needed to provide services from a businesses main offices to their branches or smaller offices [...]
Learn About IP Addresses For The CCENT Exam
Every router and computer on the network has to have an IP Address. The best way to understand how IP Addresses work is to think about how the postal service works. Every house has a unique address, a street name and a house number. There can be multiple house numbers on one street, and there [...]
Learn About The OSI Model For The CCENT Exam
The OSI Model was created in 1984 because in the early 1980′s there were many companies producing different types of networking technologies. Networks during this time were increasing very rapidly and many problems began to arise when networks from different vendors could not talk to one another. By following the OSI Model networks created by [...]