Computer Networking

the Layer 2 source and destination address

Computer networking is an engineering discipline that intends to analyze communication method among many computer systems that are connected or networked together to exchange information. This may depend on the theoretical application implementation like computer sciences and telecommunication.

A global information distribution network is any computer that has Internet reception. Satellites orbiting the earth make this possible. A person in China can have the same information at the same time as a person in the United States.

This IP address is usually called the localhost address.

For classful addressing, the first octet identifies the class to which it belongs. There is also a way of looking at the first few bits of the first octet, but that makes it more difficult.

For an IpV4 address, you have 4 octets for the IP address. Looking at the first octet, to determine the range, use the following:

1 - 126 class A

127 local loopback address

128 - 191 class B

192 - 223 class C

224 - 239 class D

240 - 254 class E

Roughly about 325 feet or 100 meters. That is the suggested maximum length. Some installations have achieved longer. The longer it is, the less reliable it is (ie packet delivery problems).

You could throw a switch in the middle to achieve 600 feet if needed.

In a mobile network, a switch's loopback address is a configured logical address not associated with a physical interface. It's useful for routing as it's always up and operational unless otherwise manually brought down. Whereas a physical ip address can lose routing if the interface goes down or if it's handling significant amounts of traffic.

An address space is a range of discrete addresses, all of the address locations available in a particular named subset of a computer's memory.

A host is an internet term in which a created website is placed on a server provided by a 2nd party. The website created is then displayed on the www. In this case, the 2nd party is the host. For example, bluehost, justhost, godaddy.com.

Multimode fiber

Integrated services digital network

Address Resolution Protocol (ARP) spoofing, also known as ARP poisoning or ARP Poison Routing (APR), is a technique used to attack an Ethernet http://wiki.answers.com/wiki/Ethernet or http://wiki.answers.com/wiki/Wireless_network. ARP Spoofing may allow an attacker to http://wiki.answers.com/wiki/Packet_sniffer http://wiki.answers.com/wiki/Data_frame on a http://wiki.answers.com/wiki/Local_area_network (LAN), modify the traffic, or stop the traffic altogether (known as a http://wiki.answers.com/wiki/Denial-of-service_attack). The attack can only be used on networks that actually make use of ARP and not another method of address resolution.

traceroute is usually used for this purpose.

Eathernet LAN

Sources: Networks+ Guide to Networks 5E Page 59

Software routine.

DNS Resolution is a means of directing persons to websites. DNS works similar to a phone book in assigning IP numbers to hosts. In doing so, we are able to connect to the internet through words rather than having to remember an IP address to visit websites.

Foot-printing is the pre-hacking phase that could be accomplished without the attacker ever connecting to the target network.

There are 5 different types: Primary, Secondary, Stub, Active Directory integrated, and reverse look up. See the following link for info on the different zones.

http:/www.tech-faq.com/understanding-dns-zones.shtml

Encrypted communication between 2 points.

Modems can be used over any means of transmitting analog signals, from light The most familiar example is a voice band modem that turns the digital data of The famous Bell 103A dataset standard was also introduced by AT&T in 1962. A standard modem of today contains two functional parts: an analog section for

you can buy a rf converter from radio shack or if you have a vcr you can run the rca cables to th e input on the vcr and output with coax.(make sure you turn the channel on the vcr to the video input channel

You'll have to select or start typing or working in a slide before the format menu will appear alongside the other menus.

www.pfriendz.com

First, you need to choose the correct program. If you need to monitor network devices, you can try spiceworks. If you need to monitor internet activities, you can choose "WFilter".

Second, install the program and follow its guide to deploy it.

IT uses the destination MAC address to selectively forward a frame

Repeater.