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Definition
| Computer networks saves us both time and money and it makes is easer for us to work , increasing productivity. Before computer were connected in network, moving files between them involved physically putting them on a disk and carrying the disk to the new machine. This was wistfully referred to as " sneakernet" |
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| peer-to-peer network (p2p) |
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| is one in which each computer is considered equal, each device can share its resources with every other device , and there's no centralized authority. |
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| The devices in a peer-to peer network. |
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| is two are more computers that share resources. |
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| resource that contains one (or more) logical host name or shared address..ex are software,hardware,and files. |
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| is a simple way to network a group of Windows 7 computers that are all on the same home network. |
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| is one that has at least one server at its center. |
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| is a multiuser computer system that runs a network operationg system(NOS)and provieds services -such as Internet access,e-mail,or file and print servces -to client system. |
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| The personal computer and other devices that connect to the server. |
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| 1st thing you need to know sec 1 |
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| A computer network is two or more computers that share resources, such as software,hardware,or files. |
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| 2nd thing you need to know sec 1 |
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Definition
| A peer-to peer network (p2p)is one in which each computer belongs to the same workgroup and considered an equal. |
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| 3rd thing you need to know sec 1 |
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| A client -server nework is one that has at least one server at its center that provides centralized managment,resources, and security. |
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| Networks come in many different shapes and sizes.Two common types of networks are LANS and WANS. found in both home and business. |
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| is a network that has all connected devices or nods located in the same physical location. |
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| is one that uses WiFi to trasment data. |
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| is a network that spans multiple locations and connects multiple LANs over dedicated lines useing routers. |
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| the most commonly used standard that data is transmitted over a local area network. |
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| virtual private network(VPN) |
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| A private network though the public network (Internet) that allows remote users to access a LAN securely.Such network use encryption to ensure data security. |
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| A network that consists of multiple LANs located in the same location connected to each other using routers. |
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| metropolitan area network (MAN) |
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Definition
| A network that covers a single geographic area , which provides WiFi access over much of the city. |
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| storage area network (SAN) |
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Definition
| A network between the data storage devices and the servers on a network that makes the data accessible to all servers in the SAN. |
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| use cell towers to transment voice and data over large distances. |
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| 1st thing you need to know sec 2 |
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Definition
| A local area network (LAN) is a network that has all its nods located in the same place. |
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| 2nd thing you need to know sec 2 |
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Definition
| Wireless network types include Bluetooth personal area networks(PAN).wirelessLANs(WLANS),and cellular networks. |
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| 3rd thing you need to know sec2 |
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| Ethernet is one standard that defindes the way data is transmitted overa LAN. |
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| 4th thing you need to know sec2 |
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| A wide area network (WAN) is a network that spans multiple locations and connects mulitple LANs. |
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| 5th thing you need to know sec 2 |
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Definition
| A VAN creates a private network though the public network (Internet) |
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Definition
| Every network has two major components:hardware to create the physical connections between devices and software to configure the resources and security. |
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| is a communication decvice used to establish a connection with a network. |
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| A network created when two wireless devices connect to each other directly. |
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| infrastructure wireless network |
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Definition
| is a device that connects thought a wireless access point. |
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| A communication device used to connect a computer to a telephone line. |
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| optical network terminal(ONT) |
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Definition
| The device that connects a LAN to a FiOS network |
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| is a device that connects two or more networks together. |
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| is a device that connects multiple device on a LAN. |
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| wireless access point (WAP) |
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| is a device that allows wireless devices to join a network much like a switch. |
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| is a device that block unauthorized access to a network. |
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| 1st thing you need to know sec 3 |
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Definition
| Each device that connects to a network must have a network adapter. |
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| 2nd thing you to know sec 3 |
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| The first device on a network connects to the Internet, typically a modem or optical network terminal.(ONT). |
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| 3rd thing you need to know sec3 |
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| A router connects two or more networks together; a switch connects multiple devices on a network. |
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| 4th thing you need to know sec 3 |
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Definition
| A firewall blocks unauthorized access to a network. |
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| Network hardware allows devices to physically connect to each other, but it's the software and protocols that allow them to communicate with each other. |
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| is a network composed of a group of clients and servers under the control of one central security database on a special called the domain controller. |
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| network operating system(NOS) |
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Definition
| is a multiuser oprating system that controls the software and hardware that runs on a network. |
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| defines the rules for communication between devices. |
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| A suite of protocols that defines how files are transfers on a operating system. |
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| TCP(transmission control protocol.) |
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Definition
| It's function is to assure that data packets are transmitted reliably. |
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Definition
| It's function is to route packets of raw data to it's destination. |
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| 1st thing you need to know sec4 |
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Definition
| peer-to-peer computer are able to detect and share resoures with each other with little or no configuration. |
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| 2nd thing you need to know sec 4 |
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| A domain is a network comosed of a group of clintes and servers under the control of the domain controller. |
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| 3rd thing you need to know sec 4 |
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Definition
| Clients log in to a server and request access to resources. |
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| 4 thing you need to know sec4 |
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| Server software allows client to communicate with the server to share resources , run application , and send messages. |
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| 5th thing yo need to know sec4 |
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| Protocols defenine the rules for communication between devices .TCP/IP is the protocol stack that runs on the Internet and on most LANs. |
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Definition
| In this section we look at how to Protectect your network, using different methonds like hardware,network configuration,firewalls,and antivirus software. |
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| using an open wireless network to access the Internet without permission. |
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| driving around and locating open wireless access points. |
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| 1st thing you need to know sec 5 |
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| A Firewall examines the data packets as they enter of leave your network. |
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| 2nd thing you need to know sec 5 |
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Definition
| Network users should have strong passwords that are hard to crack and be granted access only to what they need. |
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| 3rd thing you need to know sec 5 |
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| Indivual computers on the network must be protected with firewalls and antivirus and antmalware software. |
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| 4th thing you need to know sec 5 |
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| System on the network must be kept up date and secure. |
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| There are dozens of network certification from CompTIA,Micosoft, and Cisco to name a few. Network adminitrators are well-paid technicians that manages the hardware and software on a network. The role may also include troubleshooting and security . Jobs in this field are predicted to grow at a rapid pace over the next decade . |
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