CompTIA Objectives: (N10-005)
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Module 5.1 - pp (Configuring Network Connections)
Module 5.2 - pp (Configuring Shared Resources)
Module 5.3 - pp (Configuring Internet Access)
Module 5.4 - pp (Troubleshooting Networks)
Module 5.5 - pp (Mobile Devices)
Module 1.1 - pp (Topologies and the OSI Model)
Module 1.2 - pp (Cabling and Connectors)
Module 1.3 - pp (Ethernet)
Module 1.4 - pp (Bridges and Switches)
Module 2.1 - pp (Internet Protocol)
Module 2.2 - pp (IP Addressing Schemes)
Module 2.3 - pp (DHCP, APIPA, and NTP)
Module 2.4 - pp (IPv6)
Module 2.5 - pp (Routing)
Module 3.1 - pp (Transport Protocols)
Module 3.2 - pp (Name Resolution)
Module 3.3 - pp (Internet Applications)
Module 3.4 - pp (WAN Technologies)
Module 3.5 - pp (Remote Access)
Module 4.1 - pp (Security Fundamentals)
Module 4.2 - pp (Security Appliances)
Module 4.3 - pp (Authentication)
Module 4.4 - pp (Installing Wireless)
Here is a link to DNS Jumper. It will allow you to change your DNS Setting on your Microsoft Compter.
Some Routing Protocols to Know:
Here are some command prompt commands to know:
route print, or netstat -r (to show routing table)
netstat -n (to show ip sessions & port numbers)
tracert, pathping, mtr (linux) (to show hop distance / route to destination network)
See if you can understand this cheat sheet: http://www.aelius.com/njh/subnet_sheet.html
NOTE: In the Mike Myers Learnkey Video CompTIA Network+ it is stated that a subnet with All “zeros” or All “ones” cannot be used. This used to be correct. According to the below statement in RFC 1878. This practice was officially declared obsolete in 1995. The below statement is a quote from wikipedia: http://en.wikipedia.org/wiki/Subnetwork
Subnet zero and the all-ones subnet:
The first subnet obtained from subnetting has all bits in the subnet bit group set to zero (0). It is therefore called subnet zero. The last subnet obtained from subnetting has all bits in the subnet bit group set to one (1). It is therefore called the all-ones subnet.
The IETF originally discouraged the production use of these two subnets at one point due to possible confusion of having a network and subnet with the same address. The practice of avoiding subnet zero and the all-ones subnet was declared obsolete in 1995 by RFC 1878, an informational, but now historical RFC.
Cisco Article: Link
According to RFC 950, “Traditionally, it was strongly recommended that subnet zero and the all-ones subnet not be used for addressing.” RFC 950 was developed in 1985 and was replaced by RFC 1878, in 1995. It is stated that in some cases with older network systems RFC 950 may still be of use (subnet zero and the all-ones subnet not for use). However, RFC 950 is widely considered obsolete.
Classless Inter-Domain Routing (CIDR) – Wikipedia: Link
Classful VS. Classless Routing: Link
Here are some cabling standards to memorize:
PI MFG Link: Cat5e, Cat6 cables
The OSI (Open Systems Interconnect) Model has existed since approximately 1995 as the only ‘official model’ for teaching networking concepts. This model has become an inadequate model to describe ‘modern’ networking concepts because modern everyday networking processes have moved way beyond what the OSI Model was originally developed to explain. For instance, the OSI Model tries to help students understand the difference between multiple network protocols like TCP/IP (IPv4), Apple Talk, Net Bios, and different transports like Token Ring, FDDI, and Ethernet. Today, there is only one (1) network protocol – IP (with variations IPv4 and IPv6), and one (1) primary transport – Ethernet. Therefore, a more simplified model (Network Simple) is needed to explain currently ‘established’ networking concepts and processes not originally included with the OSI Model.
The concept of USER ID’s, Authentication, and Authorization are not included in the OSI Models description of networking. Yet students that are learning networking are constantly challenged to understand this and other concepts without an adequate model to place these network functions into their proper perspective. Therefore we put forth the below diagram to help students understand networking with a modern perspective (Network Simple, Archetype Model).
Model Legend (diagram below):
OSI Model = (Open Systems Interconnect) developed by the ISO (International Standards Organization). Traditionally used to teach networking concepts. This model has become a somewhat outdated and overly complicated method used to help students understand a functioning network (internet) and its processes.
Network Simple = This model’s perspective is based upon a greatly simplified version of the OSI Model with supporting insight into important networking functions/concepts not directly/simply (explained) by the OSI Model (alone).
Archetype Model = This model holds the perspective that ‘nothing is new’, and that modern networking (internet) is based upon existing communication systems that have been, and/or are currently in existence. Thus the Archetype Model tries to provide a method to understanding what appears to be how networks (internet) follow the “natural laws of communication”.
NOTE: The Network Simple model is used as a bridge to understanding the Archetype Model thus helping students grasp concepts of networking in an easier to understand manner than just through the OSI Model alone.
Wikipedia OSI Link: http://en.wikipedia.org/wiki/OSI_model
Another OSI Link: http://networking.ringofsaturn.com/Protocols/sevenlayer.php
Another OSI Link: http://www.techexams.net/technotes/networkplus/osimodel.shtml
Below diagram (download): OSI Model/ Simplified