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Local Area Network
Questions concerning the setting up, troubleshooting and operation of wired LANs used by businesses and other organizations
4,003 Questions
For the local network, you need to install better cables, and faster network cards. For the Internet connection, you have to pay your Internet Service Provider more, for a faster connection.
For the local network, you need to install better cables, and faster network cards. For the Internet connection, you have to pay your Internet Service Provider more, for a faster connection.
For the local network, you need to install better cables, and faster network cards. For the Internet connection, you have to pay your Internet Service Provider more, for a faster connection.
For the local network, you need to install better cables, and faster network cards. For the Internet connection, you have to pay your Internet Service Provider more, for a faster connection.
4 examples of intermediary network devices?
Azharuddin university of Malakand
Intermediary devices-
switches
Network switches or packet switches are devices that connect the various segments of a network, and their main function is switching packets of data. Also known as a network bridge, they switch processes and rout data at the level of the data link layer, which is second of the OSI model layers (concerned with physical addressing of data). A switch may also operate at the level of other OSI layers like the physical, network or transport layer. Multilayer switches act at different OSI layers simultaneously. Network switches play a vital role in the functioning of local area networks.
Routers
As its name suggests, a router is an intermediary device that regulates and routs data traffic between computer networks. It forwards data to various network destinations and controls flow of data between two or more logical subnets, which do not have the same network address in a large network. It selects the optimum path for data transfer between two points in a network. Routers are one of the most vital network devices that make data transmission possible.
Modem
A modem (modulator - demodulator) is an intermediary device that converts analog signals transferred over networks into digital signals and digital signals back to analog. They enable the transmission of digital data over analog mediums like telephone lines and optic fiber cables.
Wireless Access Points
A wireless access point (WAP) is an intermediary device in a network that connects various types of wireless communication devices to connect with wireless networks. The connectivity is made possible through 'Bluetooth' and 'Wi-Fi technologies'. It acts as an intermediary between wireless devices and wired devices that are part of a network.
Hub
Working at the physical layer of the OSI model, a hub is basically a connector between ethernet segments which also control the bandwidth sharing among connected computer terminals.
Repeater
Repeaters are network devices that carry out the task of maintaining signal strength over its transmission through a network. They regenerate data signals and amplify them for further transmission.
Firewall
A firewall is any hardware appliance or software designed to filter network traffic that passes through it according to certain criteria and trust levels set by the network administrator.
A gateway, or router, connects different networks.
A gateway, or router, connects different networks.
A gateway, or router, connects different networks.
A gateway, or router, connects different networks.
-Broadcast-based Peer-to-Peer (P2P) networks, including flat (e.g., Gnutella) and two-layer super-peer implementations (e.g., Kazaa), are extremely popular nowadays due to theirsimplicity, ease of deployment and versatility. The unstructurednetwork topology, however, contains many cyclic paths whichintroduce numerous duplicate messages in the system. Whilesuch messages can be identiï¬ed and ignored, they still consume alarge proportion of the bandwidth and other resources, causingbottlenecks in the entire network.In this paper we describe DCMP, a dynamic, fully decentralized protocol which reduces signiï¬cantly the duplicate messagesby eliminating unnecessary cycles. As queries are transmittedthrough the peers, DCMP identiï¬es the problematic paths andattempts to break the cycles, while maintaining the connectivityof the network. In order to preserve the fault resilience andload balancing properties of unstructured P2P systems, DCMPavoids creating a hierarchical organization. Instead, it appliescycle elimination symmetrically around some powerful peersto keep the average path length small. The overall structureis constructed fast with very low overhead. With the information collected during this process, distributed maintenanceis performed efï¬ciently even if peers quit the system withoutnotiï¬cation. The experimental results from our simulator andthe prototype implementation on PlanetLab, conï¬rm that DCMPimproves signiï¬cantly the scalability of unstructured P2P systemswithout sacriï¬cing their desirable properties. Moreover, due to itssimplicity, DCMP can be easily implemented in various existingP2P systems and is orthogonal to the search algorithms.
The native VLAN is untagged. If the VLAN 99 traffic to the router is untagged (as it would be,
because that is native on the switches), the router cannot interpret the data because there is no VLAN
information in the header as expected. In turn, the router tags all VLAN 99 traffic outbound, and
leaves VLAN 1 data untagged, so the switches are unable to correctly interpret either. VLAN traffic to
the other VLANs should not be affected by the assignment of the native VLAN.
What are the three basic forms of network media on which data is represented?
they are copper wire, fiber, wireless
got this from Cisco academy ccna textbook.
Which three data structures are lost if a router is rebooted or loses power?
The data structures that would go down when the router is reset or losses power would be the incoming packets, outgoing packets, and your log in details.
What is the difference when dealing with your virtual machines about the OSI model?
There is no difference in the OSI model between a real physical machine and a virtualized one.
A LAN is a local area network, meaning it is confined to one place.
LAN (Local Area Network) is a computer network covering a small geographic area, like a home, office, school, or group of buildings.
it's high speed (1000 mbps)
A WAN is a wide area network that spans large areas or distances, such as the Internet that goes everywhere.
WAN (Wide Area Network) is a computer network that covers a broad area (e.g., any network whose communications links cross metropolitan, regional, or national boundaries over a long distance).
It's Less speed 150 mbps
Lan is better for connecting in local area business where as Wan is better to connect is world wide business.
In my view WANOS is a best networking service provider & also with an affordable price.
yes
Since you didn't state what operating system you are using, I will offer Windows XP/Vista answers.
No. Not with standard software.
You can, however, define more than one static IP address (and subnet) for a single NIC.
The addresses can be on the same or different network segments depending on what you need.
This is most commonly done to allow different services on a single computer to use different IP addresses so they can be easily moved to separate computers when necessary.
with traditional applications approach each application has its own private files and users have little opportunity to share data outside of their own applications..
What is your subnet address if your ip is89.125.27.81?
The subnet address for this ISP could be almost anything, depending on how the ISP breaks up a larger network pool into a smaller one. The default subnet would be 255.0.0.0, but that is not very likely with an ISP. You can check by using the 'ipconfig' command in Windows to see the subnet mask, or 'ifconfig' if using Linux.
How do you locate a network connection port on a switch from a network port?
The fancy way is to use an expensive peice of equipment that sends tones through a network jack that can be scanned by another piece of equpment near the switch.
Another way is to have a helper plug and unplug the network jack while you go to the switch and see which light blinks on and off as your friend does that.
Before you start, you must know login and pass for your server/switch to "Telnet". Go to Start: Run: type "cmd". Type in "ipconfig" to find out the gateway and IP address you're connected to. If you need your Mac address as well because of an issue with dynamic IP addresses and yours changing on you for some reason, type "ipconfig /all" with a space before the "/". It will show "all" your IP settings, hence the "all". Now that you have your Gateway address, IP address, and Mac address (optional), you're ready to start. After hitting "enter" on the "ipconfig (/all)", or just on a new blank line, type "telnet 'Gateway Address'" ie: "telnet 10.0.8.1" (that is mine). Type in Login and Pass for your server/switch to be connected to this device. At anytime during a command, you may hit the "tab" key and it will show you all of your next available commands. For instance, we'll be using the "show" command. If you type "show", then hit the tab key, a list of next available commands will pop up and your cursor will now be on the next line after this list with "show" still appearing. After your login, type "show iparp". This is a list of all the IP addresses connected to any device within your gateway settings (any switch connected to and on the rack which you've telnetted into). Now you're looking for your IP or Mac address, both if your IP stays constant (it should). Simply hit the "tab" key until you find one of these addresses. After you're located say "10.0.10.2" (my IP on my VLAN, it's in the "10.0.8.1 (Gateway) - 10.*.*.* range") on the far right side it will show which switch/port you are connected to. Mine shows 5:2, I am on blade 5, port 2. A blade is a switch or device connected on a particular rack. A rack is the unit to which all the switches and possibly server are connected to. For each new rack the numbering sequence starts over for those sets of blades. Here is the challenge, you must know where to start counting from, "where blade (switch device) 1 starts". In our rack we have a "patch panel" on top of our "power and data" switches. Although these devices are connected to me in some way (runs from the patch panel, to power and data, to the switch, to network drop in office, to my phone, to my computer.) the actual switch the "5:2" was referring to above doesn't start until further down in the rack. One I know because our switches are labeled with the IP address, but also because a patch panel has all the individual wires connected in the back (it's patched in), and the power and data are just for power and data. These devices are very simple and just perform their own functions. The "switch" you are trying to locate, possibly a 3Com or Extreme brand, is what connects two different things. The switch you're looking for, being your Gateway IP, is what runs to the network drop, to your phone, or your computer, what have you. It may take some practice as it did in my case, but after you learn to recognize where to start counting from, you'll be able to find port "5:2" in no time.
Students and professors will be unable to Telnet to the server or FTP files to or from the server
What is a result of improperly implementing a network with redundancy at Layer 2?
end device malfunction because of broadcast storms
Which wildcard mask would specify all IP addresses from 192.168.8.0 through 192.168.15.255?
Which wildcard mask would specify all IP addresses from 192.168.8.0 through 192.168.15.255?
Yes, it must be on the same network segment or you won't be able to route a packet outside of your network segment.
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In simple home networks, the default gateway will be within the scope of the subnet mask. Some devices will enforce this (artificial) requirement.
But it's entirely possible to engineer a network with a gateway that is not within the scope of the subnet mask (if the device will allow it). Image two logical networks that run on the same physical network. It's just not a common configuration.
What is Subnet mask for ip address 64.100.19.94?
There isn't just a single subnet mask that could be used for that address. The default subnet mask would be 255.0.0.0, but there could be others if the network is subnetted.
What are the advantages and disadvantages of NFS server?
It slow down the network speed, when there is slow bandwidth of internet. We can not use it on internet due to its not secure.We can use it on intranet as we are getting 100 mbps and 1 gbps bandwidth in LAN environment.
How DHCP it sets up and how client request an IP address?
DHCP stands for dynamic host configuration protocol. It is oftenly used to dynamically assign ip addresses to the hosts connected within a lan.Dhcp works by taking a pool of IPs that is specified by an administrator and assigns each ip to a host that is up.whenever the host gets down the dhcp takes back the ip assigned and stores it back in that pool.
EX: if there are 100 PCs and we need to give ip addresses to all of them then, instead of manually assigning static ip addresses to all the PCs, we can use the DHCP to assign dynamic ips to hosts.The hosts connected will only need to obtain the ip by going to Network Places-->Properties-->Lan-->Properties-->TCP/IP-->Properties-->obtain ip dynamically-->OK-->Apply.
A good example for a WAN -- wide area network -- is a business or school network, when the GAN, or global area network, is the Internet itself.
