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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
RIP is a routing protocol - a protocol (set of rules) that allows a router to exchange information, with other routers, about existing routes.
What is the bend radius for a fiber optic cable?
Use the curvature of a tennis ball as a good guide. Try not to bend fiber cables any more than this.
The maximum bend (called the maximum bend radius) for any fibre optic cable is determined by the manufacturer, and improvements are being made all of the time.
With todays cables, if you bend a fiber optic cable 90 degrees (so it is shaped like the letter L) you will surely damage it. You want to have smooth, gradual curves, and don't go beyond the radius of a tennis ball.
How do you copy info from old computer to new computer?
You can buy a program from any computer store (like circuit city) that will do it all for you in a couple simple steps. Just like installing any new software you just put the disc in & follow the onscreen directions. There are many to choose from that offer different variety of options. Probably from about $40 up to $$$ depending on the program. Hope this helps, best of luck to you! - A. -2DMF'n- J.
What are the benefits of using pop3 email?
Pop3 provides facilities to users to access mailboxes and download messages to their computers. Pop3 allow the clients to retrieve mail via TCP or IP address, it does not send mail. This can be very beneficial to mobile devices that have no permanent network connection by holding their mail in their Pop3 mailbox until they can retrieve it.
Causes of slow internet connections?
Internet lagging can be caused by a bad connection. For example, if your computer is farther away from the router this can cause a weaker internet connection. Also, the type of internet bought can effect how fast the internet runs and downloads.
What are the shortcomings of ipv4?
The primary advantages of using TCP/IP are summarized below:
- TCP/IP can be used to establish connections between different types of computers and servers. Providing this type of interoperability is one of the main advantages of TCP/IP.
- TCP/IP is an industry standard, open protocol. This means that it is not controlled by one institute.
- TCP/IP operates independently of the operating system.
- TCP/IP includes support for a number of routing protocols.
- Enables internetworking between organizations.
- TCP/IP has a scalable, client/server architecture.
- TCP/IP includes support for name and address resolution services, including Domain Name Service Dynamic Host Configuration Protocol and Windows Internet Name Service .
Includes support for a number of different Internet standard protocols for Web browsing, file and print services, and for transporting mail.
The disadvantages of TCP/IP are summarized below:
- IPX is faster than TCP/IP.
- TCP/IP is intricate to set up and manage.
- The overhead of TCP/IP is higher than that of IPX.
What are the popular modes of communication?
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Watch a documentary about World War 2 at factualTV
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www.NostradamusOnline.com
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What is diffrnce Workgroup and Domain?
a workgroup is the name for a group of computers in a network environment. Under windows this is a name you can choose yourself for each computer. The computers who have the same workgroup name can easily exchange information through the network. A workgroup does not require a central server. a domain is basically an advanced workgroup where every computer & user requires authentication (login/pass for instance), maintained by a central server(s). workgroups are generally used in residential houses (for ex. to exchange data between 2 PCs), whereas domains are generally used in companies.
What does the cc at the end of URL stand for?
It stands for carbon copy but now, in the modern world it can also stand for 'courtesy copy'. It's the second copy which would have been sent to people who were less important, often for information only.
Which types of devices have Mac addresses?
Problem:
Using Microsoft Management (Programming, .Net) I found two mac addresses i didnt know. This meant that there were now 5. And belonged as follows:
Lan, Wireless, Hamachi, Unknown, Unknown.
- When both ends of a serial WAN link are configured to run the PPP encapsulation method they establish a session based on the 3 steps below:
Step 1
- Link establishment and configuration negotiation
- In this phase LCP opens the connection between the two interfaces and negotiates configuration options. this phase is done once the receiving router sends a configuration-acknowledgment frame back to the router who first initiates the connection...
Step 2
- Link quality determination (optional)
- In this phase LCP tests the link between the routers to determine if the quality is sufficient to bring up the network layer protocol.
Step3
- Network Layer Protocol configuration negotiation
- After step 2 ends, the appropriate NCP can separately configure the network layer protocols, and bring the protocol up and down at any given time. If LCP closes the link between the routers it will inform the network layer protocol so that it can take action in regards to the interfaces.
- TERMS -
PPP = Point-to-Point Protocol
LCP = Link Control Protocol
NCP = Network Control Protocols
- hope this helps :)
- miirii
How many IP addresses using one network card?
only one ip address we can assign to a single NIC It varies depending on the operating system. DOS, likely just 1. Windows 2000, for example, can have at least hundreds of addresses assigned, but only 51 reliably work (51 total, spread out over all your nics, weather you have one or several). After the 52nd is added, Active Directory takes a dump and bad things happen. In Linux, it will vary by kernel version. Older kernels may be limited to 30 or so, whereas newer ones will be much higher. For the *BSD's, they'll generally handle more than Linux (and more efficiently), but I'm not sure what the actual limit is. Solaris on a 64 bit Sun platform probably would handle even more. I've heard of people running thousands and thousands of IP addresses in certain network simulation applications.
What is the evolution of data communication?
The 1970s and 1980s saw a merger of the fields of computer science and data communication which has profoundly changed the technology and products . The revolutionary merger has resulted in a new combined computer communication industry.
This is really simple. There are probably hundreds of places on the net that tell you how to do this, but the simplest way is to ensure that all of the computers have ethernet cards. Have all of the computers connect to a hub, including the server. Go into the control panel, then networking and setup all of the ethernet cards to support Netbeui. From there, on the server, right click on the folder you want to share and give it a share name. Then right click on my computer on each workstation and select map network drive and use the following pattern to map your drives: \\servername\sharename.
Read this for a more step by step explanation: http://www.hardwarecentral.com/hardwarecentral/tutorials/3/1/
First we understand the concept. windows 2000 proffessional is not the server OS. this is the client OS. for client server technology server must be the server OS like windows 2000 server or NT server. client may be any OS. If u configure windows 2000 professional and win98, this is as the workgroup model. this not the client server technology. this is normal networking in LAN.
Why is UDP needed Why cannot a user program directly access IP?
IP doesn't contain the logic needed to support the various user applications. For each type of application, such as file transfer, a separate module is needed that is peculiar to that application.
How do you share a folder with password protection with Windows XP?
Set up in security settings of folder only your account, in this way you will be able to open your folder(s).
At first you have to set a password on your Windows account, then you can encrypt the folder by using Encrypting File System.
To set a password on your Windows account, click the Start button in the lower left-hand corner of your screen and select Control Panel > User Account. If there is only one account on your computer, create a guest account for other users who use your computer and then set a password on your account.
To encrypt the folder, right-click it in the right pane of Windows Explorer and select Properties. Under the General tab, click the Advanced button and then select the Encrypt contents check box.
What controls the flow of data between the computer and network cable?
The Network Interface Card (NIC) or modem (Dial-up) controls the flow of data between your computer and the cable.
Data Generating Capability of a Device is called Clock Rate.
If the clock rate is high, the processing will be slow down. If the clock rate is low, the processing will be high.
What device is typically used as the default gateway for a PC?
the router interface closest to the computer
What is a legal agreement that allows multiple users to access software on a server simultaneously?
It is called a network license.
What is the Network layer in the OSI?
Layer 7:Application Layer
Defines interface to user processes for communication and data transfer in network
Provides standardized services such as virtual terminal, file and job transfer and operations
Layer 6:Presentation Layer
Masks the differences of data formats between dissimilar systems
Specifies architecture-independent data transfer format
Encodes and decodes data; Encrypts and decrypts data; Compresses and decompresses data
Layer 5:Session Layer
Manages user sessions and dialogues
Controls establishment and termination of logic links between users
Reports upper layer errors
Layer 4:Transport Layer
Manages end-to-end message delivery in network
Provides reliable and sequential packet delivery through error recovery and flow control mechanisms
Provides connectionless oriented packet delivery
Layer 3:Network Layer
Determines how data are transferred between network devices
Routes packets according to unique network device addresses
Provides flow and congestion control to prevent network resource depletion
Layer 2:Data Link Layer
Defines procedures for operating the communication links
Frames packets
Detects and corrects packets transmit errors
Layer 1:Physical Layer
Defines physical means of sending data over network devices
Interfaces between network medium and devices
Defines optical, electrical and mechanical characteristics
