BlueTooth Technology by Jith Crs
Bluetooth is the name given to a new technology standard using short-range radio links, intended to replace the cable(s) connecting portable and fixed electronic devices. The standard defines a uniform structure for a wide range of devices to communicate with each other. ... Logical Link Control and Adaptation Protocol: The Bluetooth logical link control and adaptation protocol (L2CAP) adapts upper layer protocols over the baseband. ... Telephony and Cable Replacement Protocol: Telephony Control protocol: Binary (TCS Binary or TCS BIN), a bit oriented protocol, defines the call...

Introduction Of Computer by Lalit Bansal
Internet and Networks Computer network is a group of computers linked together, so that they can share information and resources. Internet is “network of networks”. It can also be described as information highway. It is the world’s largest network of computers. ... TCP/IP: TCP (Transmission Control Protocol) and IP (Internet Protocol) are the two types of protocol. ... The first one TCP (Transmission Control Protocol) is a reliable, connection –oriented protocol that allows stream of bytes from the sender to be delivered to the receiver without error.

OSI Layers Model by Kashif Raza
Introduction During the early years of our modern computer era, very few standards and protocols existed between various manufacturers. However, as time went on and computer technology continued to improve and become more widespread, it became apparent that standards would be necessary to... The data link layer consists of two sub layers; the logical link control (LLC) and the media access control (MAC), which provide reliable communications by ensuring the data link is not broken and also by examining packet address information.

ARP, MAC, Poisoning, & WiFi by Brian Wilson
In this paper we will cover the basics on Address Resolution Protocol (ARP), Media Access Control Addresses (MAC), Wireless (WiFi), and layer 2 communications. I hope to explain how a “Man in the Middle Attack” works. The common name for this is ARP poisoning, MAC poisoning, or Spoofing. ... The Address Resolution Protocol is used to dynamically discover the mapping between a layer 3 (protocol) and a layer 2 (hardware) address. ... For our proposes we will review layer 2 (data link layer), Data Link layer defines the format of data on the network.

Key Concepts of Virtual Private Networks by Thoas Powel
Virtual Private Networks claim to solve majority of the security problems faced by the enterprises. Most of the issues were related to secure data transfer over the public internet. The internet's greatest asset is ubiquity and openness but this is its greatest weakness as well. ... • IPSec Protocol • Tunneling protocols (PPTP:Point to Point tunneling protocol, L2TP: Layer2 Tunneling protocol ) • Socks5 Services Many managed VPN services offer Quality of Service guarantees, which can be an excellent choice for site-to-site connectivity.

Networking Basics by Kashif Raza
A network is a group of computers, printers, and other devices that are connected together with cables. The sharing of data and resources. Information travels over the cables, allowing network users to exchange documents & data with each other, print to the same printers, and generally share any... This concept is known as "protocol independence," which means that devices that are compatible at the physical and data link layers allow the user to run many different protocols over the same medium.

History of the Computer - Data Handling Peripherals; Part 3 of 3 by Tony Stockill
TELETYPE MACHINES Developed for telegraph 'hard copy' communication over the telephone network, a teletype machine was suited to adoption by the rapidly expanding computer market, with its demand for hardware and technology to run it. A ready-made printer and keyboard communication device, it... (you still can't get away with anything!) Some systems use a control console for each operation, system, network, printers etc. ... Others incorporate all functions in one control, with auxiliary stations in the print room, network console, etc.

Remote Access Services by Josh Riverside
With the surge in popularity of the Internet, Remote Access Services (RAS) have become widely popular in the IT environment. RAS let you connect to your computer from a remote location, such as your home, to the SLAC network. RAS's primary function is to let you access files on a server from a... RAS is a built-in feature of Windows NT that enables the users to log in to an NT-based LAN environment using a modem, X.25 connection or WAN link. ... Though it has its own set of disadvantages, like being slower in comparison to a regular network connection.

What is a Firewall ? by Benjamin Hargis
Simply put it acts as a barrier between your computer and the internet. To protect you from crackers, hackers and malware. If your running DSL or a cable modem you should employ a firewall, as having a direct connection to the Internet can make you a target to attack. ... I like this the best as it gives you the firewall administrator the most control. ... From home users I like D-Link DI-604 this is a inexpensive firewall that works well. ... With firewalls you set up ACL's or Access Control lists to allow or deny traffic.

Cisco CCNP / BSCI Exam Tutorial: 10 ISIS Details You Must Know! by Chris Bryant
Earning your CCNP certification and passing the BSCI exam depends on knowing the details of many Cisco technologies, ISIS chief among them. To help you prepare for exam success, here's a list of ISIS terminology and basic concepts that will help you pass this tough exam. ... ISIS Terms: Domain: section of the network under common administrative control Area: logical segment of the network composed of contiguous routers and their data links Intermediate System: A router. ... Level 3: Inter-domain routing performed by InterDomain Routing Protocol (IDRP).