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Computer Networking
Computer networks are collections of computers which are connected together in order to communicate and transfer information. Questions about computer networks, networking protocols, and how to set them up belong here.
18,810 Questions
Which factors can cause signal loss in a fiber optic cable?
the resistance of the wire itself can be responsible for signal loss. electromagnetic fields may cause distortion. Another possibility is if the signal is not terminated properly you may experience a reflection of the signal traveling in opposition of the desired signal. Heat can cause loss or distortion. corrosion on the copper wire may also cause loss or distortion of the signal.
The above answer is not true for optical fibre and refers only to copper wire. Although signal attenuation does occur over fibre optics. It normally results fromAtomic absorption of light photons,
Scattering of light by flaws and impurities in the fibre, or
Reflection of light by splices and connectors.
Will a wireless router work off a normal household modem if the modem is not connected up to a PC?
Yes. In fact, this is the standard, intended way for a wireless router to work.
ISP/Internet service DSL/Cable-----> Modem---->Router )))))) PC
---> Cable
))))) Wireless
What are the advantages of using a client sever model?
centralized admonition
security is easier to enforce
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What four routed protocols are supported by EIGRP?
Off the top of my head it is
IPv4
IPv6
Appletalk
IPX
Into which category or categories of e-commerce do P2P file-sharing networks fall?
It would fall in what appears to be a missing third category, customer to customer e-commerce.
What is the Purpose of TCP IP utilities?
The TCP/IP utilities are used to troubleshoot and diagnose issues with TCP/IP protocols. Ping is used to test connectivity between nodes in a network, netstat will show you ports in use and network connections, traceroute will trace the hops between routers/networks, nslookup and dig can be used to troubleshoot DNS problems.
WAN = Wide Area Network WLAN = Wireless Local Area Network hope I helped
What is the device called so that two computers can share files?
A number of ways to share files between two computers.
1. A home network does not require an external device. On windows xp, and vista as well i believe, it is called workgroup and this allows you to designate which folders you want to share with other computers in the same workgroup. In windows 7 it is called a homegroup
2. A NAS, network attached storage device might be what you're looking for. It's basically a small server attached to your network over wireless or ethernet and you can drop files into the NAS's hard drives. Most have 2 or more hard drive bays so you can expand the storage capacity if you run out.
and there are more but these two are the ones i think most people will use
RA(config-router)# network 172.16.1.0 0.0.0.15
What ip address would you use for a local network?
Any one of the following ranges, recommended by RFC 1918:
10.0.0.0 - 10.255.255.255
172.16.0.0 - 172.31.255.255
192.168.0.0 - 192.168.255.255
Any one of the following ranges, recommended by RFC 1918:
10.0.0.0 - 10.255.255.255
172.16.0.0 - 172.31.255.255
192.168.0.0 - 192.168.255.255
Any one of the following ranges, recommended by RFC 1918:
10.0.0.0 - 10.255.255.255
172.16.0.0 - 172.31.255.255
192.168.0.0 - 192.168.255.255
Any one of the following ranges, recommended by RFC 1918:
10.0.0.0 - 10.255.255.255
172.16.0.0 - 172.31.255.255
192.168.0.0 - 192.168.255.255
Who invent the network security?
There is no one person "responsible" for network security in terms of "inventing" it. There are many people over a period of decades that have contributed to some aspect of security.
The best security policy for this situation is one that requires the use of a VPN connection and the appropriate authentication.
What is the difference between server and domains?
The difference between the server and domains is fairly simple. The server is the system on which the entire functions rest, and the domains are pages within that system. Imagine the server as a neighborhood and domains as houses.
How do the characteristics of coaxial cable compare with twisted-pair cable?
Both the coaxial cable and twisted pair cable have a basic connection medium for network cabling.
<<>>
Coaxial cable can be used for transmission of RF (radio frequencies) whereas Cat 5 (twisted pairs cable) can not.
*IPSEC
Why can a router have a single mac address but many IP address?
The Router only has one M.A.C Address and One IP Address But, the Router can have many Connections ( Devices using the network ) That may shoe up as their IP Addresses. But the Router only Has One IP Address
What is mean by server side processing?
In some traditional computing environments the presence of client-server architecture is noted. This is especially true in the internet age, but is perhaps best demonstrated in a legacy one - namely mainframe environments. Back in the days of mainframe popularity, there was one main computer (the mainframe SERVER) and many many terminal connections (think screen and keyboard only CLIENTS) into that mainframe. The way that the user would connect to utilize system resources was through interface devices such as keyboard and monitor. There were no desktop computer processing components on the user's side (CLIENT SIDE), all the processing was done by the mainframe (SERVER SIDE).
In more common modernly utilized systems, such as typical internet browsing, there are the presence of computational resources at both ends of the connection. There is a server sitting out there somewhere that has files on it that you want to look at. Perhaps it is a web-page that you enjoy about plants, or music, or history. Perhaps there is a database (a searchable organized collection of data) also residing somewhere on this server somewhere out there. The web SERVER has the ability to use the code that is contained in the webpage to process incoming requests (from the CLIENT - from you or other users who want to browse the pages it offers) and perhaps pull some information out of this database on plants, or music, or history. All this processing takes place on this remote machine that is out there somewhere. Your local machine that is doing the requesting (the CLIENT) does nothing but wait for the request to be prepared and served up to you in your browser.
When the SERVER is done requesting resources and information from the database (querying) the page is rendered and sent to you (the CLIENT). Your client-side browser takes the information and presents it to you. Some rendering may be done locally on the client-side, but the processing for the page all took place server-side.
In general, a rack mounted solution will be more expensive than a distributed setup. The amount of volume for rack mounted equipment is less than that of their desktop counterparts. Additionally, because there are several systems in a single rack, heat dissipation becomes an issue. Furthermore, for a rack mounted setup you would have to add in the costs of whatever input device(s) you decide to go with whether it be a rack mounted KVM, or network connection(s).
There are some benefits such as security. A rack mounted system can easily be locked down to prevent unauthorized hardware changes and limit physical access to the rack. Also, maintenance and support is somewhat easier on a rack because access to all the machines is limited to a single location. Another item to consider is the power requirements. You will need more power to supply a rack rather than single machine, however when it comes to backups, the whole rack can be loaded onto a single UPS which allows for the whole system to remain up in the event of power failure (provided a large enough UPS is used).
The current IP Address is: "69.12.3.35"
I don't know why you would need it.
A network device or box that provides a central location to connect cables?
A network device or box that provides a central location to connect cables is usually a router. The function of a router is to provided the shortest route for any two nodes on a network to interconnect and communicate.
