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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
Why is the address 172.31.255.255 with a sub net mask of 255.255.255.0 invalid as a host ID?
because that is the last number of the subnet. the last number in a subnet is used as the broadcast domain. the first number is also not usable. an example would be:
id 192.168.20.XX
subnet 0f 255.255.255.128
192.168.20.0 and 192.168.20.127 may not be used and 192.168.20.128 starts the next subnet making 192.168.20.128 and 192.168.20.255 not usable
On the transmitting end, there's a couple different methods. Linear amplification is a common one, for simplex, half dulplex, and full duplex transmission units. For full duplex transmission, the use of repeater towers. On the receiving end, preamplification of the incoming signal.
What Cable configuration used in PC to router connection?
Use a straight through cable, just as you would with a hub or switch.
google search for subnet mask calculator:
10.10.128.1 - 10.10.159.254 -- effective range
10.10.128.0 is the marker IP
10.10.129.255 is the broadcast IP.
Explain how to calculate a hosts network id given its ipv4 address and subnet mask?
To calculate a host's network ID given its IPv4 address and subnet mask, you follow a logical
process of combining bits known as ANDing. In ANDing, a bit with a value of 1 plus
another bit with a value of 1 results in a 1. A bit with a value of 0 plus any other bit results
in a 0. If you think of 1 as "true" and 0 as "false," the logic of ANDing makes sense. Adding
a true statement to a true statement still results in a true statement. But adding a true
statement to a false statement results in a false statement.
Comcast modem default ip address?
Depending on the Make & Model of your modem, you are likely best off heading to the modem manufacturer's website, looking for the PDF or manual for the modem. If the device offers a "health" or administration page, the preferred method to access it would be found there.
Look on the bottom of your modem, it's there on most.
IP addresses are dynamic which means it creates the ip address automatically so static IP's will not work and they are never printed on any modems because each location is different. Or if you are trying to get into the GUI of the modem you type in 192.168.100.1
Can you connect a router into a network that uses a switch?
The answer is yes. If you need more information, please be more specific on what it is you're trying to do.
Yes. Generally you plug your internet connection into the router, then an ethernet wire from the router to the switch. More than likely, depending on what set-up you previously had, your going to have to change your tcp/ip settings. I could probably guess what set-up you have... but you'll have to be more specific before we can give more advice.
What is the advantage of peer to peer LAN?
a) It is easy to install and so is the configuration of computers on this network, b) There is no need for full-time System Administrator. Every user is the administrator of his machine. User can control their shared resources. c) All the resources and contents are shared by all the peers, unlike server-client architecture where Server shares all the contents and resources. d) P2P is more reliable as central dependency is eliminated. Failure of one peer doesn't affect the functioning of other peers. In case of Client -Server network, if server goes down whole network gets affected.
Give four examples of devices besides PCs that will eventually run on wireless LANs?
Keyboards, mice, printers, and monitors are four examples
What of the cable types has the longest maximum length?
Scsi Cable (or more commonly know as the ribbon cable)
Why do you have 5 Classes of IP Address?
We have a total of five classes of IP addresses (A,B,C,D,E). Class A, B, and C are used on local and wide area networks. Class D is used for multicasting purposes. Class E is experiential and is not in use today.
Class A range starts from 0.0.0.0 --- 127.255.255.255
Class B range starts from 128.0.0.0 --- 191.255.255.255
Class C range starts from 192.0.0.0 --- 223.255.255.255
Class D range starts from 224.0.0.0 --- 239.255.255.255
Class E range starts from 240.0.0.0 --- 255.255.255.255
How do you network three computers without a hub?
One Answer:
It is possible to connect two computers without using a hub by using a switch instead. A switch is better than a hub because it creates a collision domain (CD) and stops them from happening when two devices try and send frames at the same time. Rather than buying a cross-over cable to connect two computers together, you can use two straight-through cables (your average, everyday network cable) and connect them to a switch. This also allows for growth where you can add more computers to the switch if the network grows.
Another Answer:
With Ethernet, you can use a crossover cable to connect two computers without using a hub, switch, or existing network. Crossover cables are Ethernet cables that have the send and receive wires (pins) switched along the length of the cable. The pins that send information from one computer are connected to the pins that receive information for the second computer. You can use a regular cable if they are modern computers.
What are the 3 requirements for a network connection?
You must have the following for a network connection:
- Sender or transmitter
- Receiver
- Network Media
The first two are in the NIC card for each device in a network, and the media may be either wired or wireless for a connection between the sender and receiver.
How would you accurately describe a converged network?
A network is converged immediately after a topology change has occurred.
A network is converged when all routers flush the unreachable networks from their routing tables.
A network is converged after all routers share the same information, calculate best paths, and update their routing tables.
What is meant by network congestion?
When too many packets are present in a subnet, performance degrades. This situation is called Congestion.
Update:
In any network when there is too much the data traffic at a node that the network slows down or starts loosing data, it is known as network congestion. It degrades quality of service and also can lead to delays, lost data or e.g. dropped calls on a telephone network.
- Neeraj Sharma
when excess of data travels in a subnet or in node there will be a loss of data, this excess flow is know as network congestion.This demotes the performance in network e.g.improper delivery of fax
What does a router does in a LAN OR WAN environment?
It decides where data should go on a network.
Imagine a company's network. One user sends an email to someone else. Their computer sends the email to the router, which then sends it out to the mail server. The mail server then sends out a message to the other user's computer telling them that they have received an email. The router picks this up and sends it in the correct direction.
Advantages and disadvantages of hard-wire and soft-wire systems?
Advantages and disadvantages of hardwire and softwire systems
What difference between switches and hub?
The difference is in the way how they process communications between two or more computers. If you send some information to one computer only using hub it will resend the information to all computers in the network. When switches resend information to the only one computer.
