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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
Difference between server web server?
Webserver: A Web server handles the HTTP protocol. When the Web server receives an HTTP request it responds with an HTTP response such as sending back an HTML page. To process a request a Web server may respond with a static HTML page or image send a redirect or delegate the dynamic response generation to some other program such as CGI scripts JSPs (JavaServer Pages) servlets ASPs (Active Server Pages) server-side JavaScripts or some other server-side technology. Whatever their purpose such server-side programs generate a response most often in HTML for viewing in a Web browser. Application Server: As for the application server according to our definition an application server exposes business logic to client applications through various protocols possibly including HTTP. While a Web server mainly deals with sending HTML for display in a Web browser an application server provides access to business logic for use by client application programs. The application program can use this logic just as it would call a method on an object
What is the difference between Link state routing and distance vector routing through examples?
In a distance vector routing protocol, such as RIP or EIGRP, each router sends its routing table to neighboring routers. The routers don't know the topology, i.e., how other routers are interconnected.
In a link state routing protocol, such as OSPF or IS-IS, routers first exchange information about connections within the network (or an area of the network), and build a topology table. Then each router uses Dijkstra's algorithm to calculate the best route to each destination.
What is the function of network topology?
yes, network topology does matter to design a network. as we know that topology is a structure of network. without a topology network cannot be designed. we have to consider which topology to use and what does each topology does. different topology have its different features. if you want most secure connection use full mesh topology
What are 3 characteristics of IPv4?
1) Header (20-60 bytes). 2) Routed Protocol. 3) Types of address: i) Unicast ii) Multicast iii) Broadcast (limited/Direct) 4) 32-bit address. 5) Address space is 2^32. 6) Format of address : Decimal dotted. 7) IPsecurity support is optional.
What are the differences between file server and client server architectures?
file server is a computer responsible for the central storage and management of data files so that other computers on the same network can access the files. A file server allows users to share information over a network without having to physically transfer files by floppy diskette or some other external storage device. Any computer can be configured to be a host and act as a file server. In its simplest form, a file server may be an ordinary PC that handles requests for files and sends them over the network. In a more sophisticated network, a file server might be a dedicated network-attached storage (NAS) device that also serves as a remote hard disk drive for other computers, allowing anyone on the network to store files on it as if to their own hard drive.
Client/server it is the relationship between two computer programs in which one program, the client, makes a service request from another program, the server, which fulfills the request. Although the client/server idea can be used by programs within a single computer, it is a more important idea in a network. In a network, the client/server model provides a convenient way to interconnect programs that are distributed efficiently across different locations. Computer transactions using the client/server model are very common. For example, to check your bank account from your computer, a client program in your computer forwards your request to a server program at the bank. That program may in turn forward the request to its own client program that sends a request to a database server at another bank computer to retrieve your account balance. The balance is returned back to the bank data client, which in turn serves it back to the client in your personal computer, which displays the information for you. Fore More information with help website :http://www.iyogibusiness.com
How do you track someone on the internet?
I have been looking forever . I have done mylife.com it's not free , classmates another lie . Have you done myspace.com ? Aol.com profiles ? Yahoo.com , facebook.com , twitter , yahoo blogs , Google.com , Sorry that's all I can say on that . But I hope I helped some what . If you find one that works let me know . Take care
Barbie Ann,
Check IP Integrity
Which Transport layer protocol does TFTP rely?
TFTP uses UDP - TFTP stands for Trivial FTP, and it is called trivial because it does not check to ensure delivery, it uses UDP which makes a best-effort delivery attempt
What are the two most popular authentication protocols?
one way authentication and mutual authentication
I should be able to help with this - but unfortunately I'm not quite following the question!! Could you rephrase and draw me a little verbal picture...the wording is confusing me a little. Thanks.
How do subnet masks indentify that a network has been subnetted?
If (for example) the first 20 bits of the subnet masks are "1", then any IP address that shares the same 20 bits with the IP address of my computer is in the same subnet.
Note that a subnet only indicates the size of the current subnet, the subnet in which your computer (for example) is located. Other subnets of a network may have different sizes; this can't be ascertained just by looking at you IP address and subnet. Nor is it relevant for your computer: The computer only has to know that anything outside the subnet has to be sent first to the default gateway - the server or router that connects your subnet to the remainder of the net.
If (for example) the first 20 bits of the subnet masks are "1", then any IP address that shares the same 20 bits with the IP address of my computer is in the same subnet.
Note that a subnet only indicates the size of the current subnet, the subnet in which your computer (for example) is located. Other subnets of a network may have different sizes; this can't be ascertained just by looking at you IP address and subnet. Nor is it relevant for your computer: The computer only has to know that anything outside the subnet has to be sent first to the default gateway - the server or router that connects your subnet to the remainder of the net.
If (for example) the first 20 bits of the subnet masks are "1", then any IP address that shares the same 20 bits with the IP address of my computer is in the same subnet.
Note that a subnet only indicates the size of the current subnet, the subnet in which your computer (for example) is located. Other subnets of a network may have different sizes; this can't be ascertained just by looking at you IP address and subnet. Nor is it relevant for your computer: The computer only has to know that anything outside the subnet has to be sent first to the default gateway - the server or router that connects your subnet to the remainder of the net.
If (for example) the first 20 bits of the subnet masks are "1", then any IP address that shares the same 20 bits with the IP address of my computer is in the same subnet.
Note that a subnet only indicates the size of the current subnet, the subnet in which your computer (for example) is located. Other subnets of a network may have different sizes; this can't be ascertained just by looking at you IP address and subnet. Nor is it relevant for your computer: The computer only has to know that anything outside the subnet has to be sent first to the default gateway - the server or router that connects your subnet to the remainder of the net.
What connects computers with cables to share information?
Well if your talking about something like Skype its the internet. But mostly if your talking about computer sharing info its a programm downloaded on both computers.
What is the difference between UTP and STP twisted pair cables?
* UTP for Unshielded Twisted Pair * STP for Shielded Twisted Pair * FTP for Foiled Twisted Pair * S/UTP for Screened Unshielded Twisted Pair * S/STP for Screened Shielded Twisted Pair * S/FTP for Shielded Foiled Twisted Pair
* UTP cable has no shielding, only an insulation around the cables * STP cable has a metal shield around each twisted pair, all pairs together are in the cable covered by insulation * FTP cable has a metal shield around all pairs - "the cable"- together * S/UTP cable has a metal shield around all pairs - "the cable"- together
(or would be the same as FTP) * S/STP cable has a metal shield around each twisted pair, and a metal shieldaround all pairs - "the cable"- together
(or would be the same as S/FTP) * S/FTP cable has a metal shield around each twisted pair, and a metal shield around all pairs - "the cable"- together
(or would be the same as S/STP) * UTP is unshielded, that's simple. * FTP and STP are ofted intermixed, sometimes S/UTP is also thrown in. In general it means the cable is shielded in one place. * S/FTP ans S/STP are of course often intermixed, both should get you a double shielded cable. * Unshielded twisted pair cable will do just fine if there are not too much electromagnic interferences (EMI), that's what the twisting is for. * Shielded cable will protect your signal better from interference. Though there are no guarantees of course, if the interference source is too strong it'll still influence things.
Things like big electro motors (an elevator engine), powerfull speaker systems (festival rig), strong light installations (that same festival rig) or a nearby high-power cable are some examples of interference sources. * Evidently unshielded cable is typically more flexible then shielded cable. * I have no idea what the practical difference between FTP and STP cable would be, but it might have something to do with the flexibility rather then with the shielding effectiveness. (): Shield
[]: Insulation
O: Conductor
[O][O]: One twisted pair of cables UTP
[ [O][O] [O][O] .... [O][O] ] FTP
[ ( [O][O] [O][O] .... [O][O] ) ] STP
[ ([O][O]) ([O][O]) .... ([O][O]) ] S/FTP
[ ( ([O][O]) ([O][O]) .... ([O][O]) ) ]
Is wireless network safer than cabled network?
No, it is not. If anything, it provides another point at which your data can be intercepted. WiFi passwords are not all that hard to hack. There are even illegal Wi-Fi devices that have a rather strong signal and have built-in brute force attack features. If you are not using the WiFi features of a modem or router, the best thing to do is disable that functionality.
What are millions of computers around the world connected by a network of networks?
The Internet, or the World Wide Web as it's called also, originally was used by academic researchers at universities across the country to more easily share data on studies or common areas of interest. DARPA (now ARPA, the US military's Advanced Research Project Agency) liked the idea of a web-like network that was self-healing if part of it was compromised. Data was re-routed if it couldn't make it from its point of origin to its destination in the most efficient manner.
So the answer is to the question is a WAN, a Wide Area Network (as opposed to a household router with three computers relying on it, a (Local)AN. The World Wide Web rides on the Internet, but generally a mechanism takes human-friendly domain names and converts them to a series of digits that for some reason computers like more when sending and receiving packets of data.
What is the difference between network administration and system administration?
In the simplest of terms they are the same, it is just the target supported is different. Network administration supports the hardware and software that makes up the network, switches and routers for example. System administration would involve the support of the various servers that would be connected to the network, database, email, and web servers are good examples. http://en.wikipedia.org/wiki/System_administrator
http://en.wikipedia.org/wiki/Network_administrator
What equipment do you need to hook up to the internet?
Hardware for the Internet can be defined as the tangible items needed to allow a user access either by direct connection or through a dial-up connection to a host computer. The first connections involved mainframe computers and telephone line connections. Since then the innovations in computer technology involving the personal computer, ISDN and cable lines to connect to the Internet have allowed for a tremendous increase in users and speed of connections. (On the web page I will include a timeline of the innovations that have greatly impacted the use of the Internet). Since connection speeds are now much faster than in the past, the designers of web pages have many more options available to them in designing their product with video and audio more likely to be used than in the first designed sites.
In researching hardware and its impact on the design of web pages, we have found that the type of hardware directly affects the type of software options one has, and therefore, the design possibilities of a web page. For instance, if one has a scanner, which allows inclusion of documents that are not currently on the computer to be added to a web page, one would also need compatible software to complete the task. In other words, one without the other is not a functional product. Just as a computer is only a box until software is installed, the additional hardware is just a paperweight until it has the correct software that allows for its intended use.
The distinction between software and hardware is sometimes confusing as they are so integrally linked. Clearly, when one purchases a program, they are buying software. But to buy the software, one also buys the disk (hardware) on which the software is recorded. Software is divided into two broad categories. "Systems Software", which includes the "Operating System" and all the "Utilities" that enable the computer to function, and "Application Software", which include programs that do real work for users. For example, word processors, spreadsheets, and database management systems fall under the category of application software. Software that has been written onto read-only memory (ROM) is called "Firmware." Firmware is both a combination of software and hardware.
NIC card, a PC, connection to the internet (cable)??
Explain a diagnostic tool used to collect data and how it functions?
- It can be hardware based (dedicated device with it's own software) or software based (application running on a PC). An Internet gateway can collect information to bust the user by tracing back the computer name, IP address and who is logged in. A sniffer is used mostly to collect information to help diagnose errors suspected to be coming from the Lan/Wan
How do you make URL for Tumblr?
When you sign up for tumblr, it automatically asks you to make a URL. If you would like to change your URL, go to Customize -> Info -> URL. You can change it to whatever you please from there.
How a network is used by an organisation to manage resources?
by going to the network manager and tell them to work
How the OSI model layer can effect a network's design and networking in general?
the OSI model prescribes the steps to be used to transfer data over a transmission medium from one networked device to another. A layered model defines each layer separately. [ As long as the interconnections between layers remain constant, protocol designers can specialize in one area (layer) without worrying about how any new implementations affect other layers. ]
What type of connector does a modem use?
On a DSL Modem you will find an RJ45 (Resistor Jack) connector with the help of which you can connect to an ISP of your choice.
the goal of ARPANET was to allow university-based researchers working for the Defense Department to share information with their colleagues in other U.S. cities.
