There are two common wireless network connection types namely fixed wire replacement and ad hoc networks. Fixed wire replacement being a LAN adopting wireless connection where otherwise would have been a wired LAN due to constant layout changes or cost. Ad hoc network simply is a real and full wireless LAN with port-to-port connections. Fig 3.0 Some of the benefits of Wireless LAN are as follows: * Simplified implementation and Maintenance – Less expensive and useful in places with constraints for laying cabling. * Extended reach – Users are able to connect to the Network resources from any location within the Network AP (Access point) transmission range.
In this first paragraph the pros of having a data on fixed lines will be discussed. The most important pro to having a fixed line is that if there is a power outage the line would still be operational. This is very important in the case of an emergency. With a cellular phone if the battery dies you will have no way of reaching out for the help that might be needed. Consumer reports still recommends having fixed line service, because emergency services can more reliably locate you quickly from a 911 call on a landline than from a cell phone.
An eavesdropper can passively sniff the wireless traffic on that network undetected and wait for someone to connect, revealing the SSID. Alternatively, there are faster methods where a cracker spoofs a disassociate frame as if it came from the wireless bridge, and sends it to one of the clients connected; the client immediately re-connects, revealing the SSID. As disabling SSID does not offer protection against determined crackers, proven security methods should be used such as requiring 802.11/WPA2. This is ideal for home
Multiple Choice 1) C 2) B 3) B, E 4) A, D 5) A 6) D 7) C 8) A 9) C, D, A 10) C, D 11) A 12) B, D 13) B 14) C 15) A, D 16) D 17) D 18) D 19) A 20) B Define the Key Terms Application: Generally, a function on any kind of computer or electronic device that is useful to the user, which can give the user a reason to want to own and use the device. More specifically, software that performs some useful function for a user. Computer network: A combination of many components that work together so that many different devices can communicate. Computer networking: The gerund form of the term computer network. Email: Electronic mail.
All these things find a way to connect to a wireless network. 4G LTE is known as the 802.11 wireless standards. It includes a number of subseries and its use is to provide wireless internet to users of notebook computers. There are some limitations that come with this. It can work well in local areas and the routers are used for the connections that do not have a good range.
DHCP is a protocol that assigns unique IP addresses to devices, then releases and renews these addresses as devices leave and re-join the network. Internet service providers usually use DHCP to help customers join their networks with minimum setup effort required. Likewise, home network equipment like broadband routers offers DHCP support for added convenience in joining home computers to local area networks (LANs). DHCP environments require a DHCP server set up with the appropriate configuration parameters for the given network. Key DHCP parameters include the range or "pool" of available IP addresses, the correct subnet masks, plus network gateway and name server addresses.
Some of these threats are traffic analysis of the data transmitted over the network, data tampering and wireless client attacks. Cisco unified wireless network has a scalability performance of IEEE 802.11n standard. Use of Cisco will assist the college to enable Wi-Fi to phones and personal computers. Different Cisco antennas will be installed in every building of the institution to provide access within the environment. To implement physical security of the network WLAN adapters should be prevented from unauthorized access and theft.
Remote-access VPNs allows you to securely access corporate resources like servers, computers, and multipurpose printers. This is done by establishing an encrypted channel across the internet. VPN technology allows companies to securely and cost effectively extend the services of their network to anyone around the world at any time. You may also get additional security equipment to install to protect the VPN. There are VPN gateways that offer native malware mitigations and firewall services as integrated spec.
It takes a computer spitting out lines and lines of codes into a usable interface for the input/output of data. Exercise 3.1.3: Physical, DataLink, Network, and Transport Exercise 3.1.4: If a model is too general, data might not be transferred and encrypted as it should be, that is why there is specific layers to each individual model. If a model is too granular, that can alienate a lot of hardware and make the model less adaptable and not as widely communicating as other models. Exercise 3.1 Review 1. because datalink and transport are integral layers involved in describing a network standard 2. OSI was created by the international Organization for Standardization, in an attempt to create an open networking model.
This can lead to new styles of working, such as home working or direct access to corporate data while on customer sites. Wireless networks can be easier and cheaper to install, especially in listed buildings or where the landlord will not permit the installation of cables. The bad news is wireless transmission is more vulnerable to attack by unauthorized users, so particular attention has to be paid to security. You may suffer interference if others in the same building also use wireless technology or where other sources of radio signals are present. This could lead to poor communication or, in extreme cases, loss of wireless communication altogether.