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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 protocol in its default configuration downloads email messages?
The POP protocol, by default, downloads messages to your computer and then deletes them from the mail server. If you leave all of your email on a primary computer (for example, your office computer) but want to have access to recently received email on a secondary computer (a home computer), you should leave your messages on the server for a limited period of time.
An extended ping is often used by the less technically knowledgeable to track "packet loss" or "latency". The command to run an extended number of repeated PINGs varies by platform:
LINUX / UNIX
ping -s < ip address >
Windows
ping -t < ip address >
Both of the above commands result in sending out 1 ping per second until the process is halted by pressing CTRL-C.
What is a network security key mismatch?
Protected wireless networks have a key to gain access to it. If your key does not match the key which is set in the router's settings, you get network security key mismatch error.
What is the first action performed when a cisco router starts up?
I believe that would be the POST (power-on self-test, where the router does some internal checks before continuing).
I believe that would be the POST (power-on self-test, where the router does some internal checks before continuing).
I believe that would be the POST (power-on self-test, where the router does some internal checks before continuing).
I believe that would be the POST (power-on self-test, where the router does some internal checks before continuing).
What is controlled access protocol?
Access control refers to exerting control over who can interact with a resource. Often but not always, this involves an authority, who does the controlling. The resource can be a given building, group of buildings, or computer-based information system.
Access control is, in reality, an everyday phenomenon. A lock on a car door is essentially a form of access control. A PIN on an ATM system at a bank is another means of access control. The possession of access control is of prime importance when persons seek to secure important, confidential, or sensitive information and equipment.[citation needed]
Item control or electronic key management is an area within (and possibly integrated with) an access control system which concerns the managing of possession and location of small assets or physical (mechanical) keys.[citation needed]
What should you learn before computer networking math programming etc?
A properly designed and run training course should take people with no knowledge of the subject through a graduated series of steps to full knowledge of the subject
FDDI is a dual-ring structure, usually found in MANs (metropolitan area networks). Although it has a physical ring structure it is not the same as a token ring network.
What does switch' MAC address table keeps track of?
The switch keeps track of which computers (identified through their MAC addresses) are connected to which switch ports.
The switch keeps track of which computers (identified through their MAC addresses) are connected to which switch ports.
The switch keeps track of which computers (identified through their MAC addresses) are connected to which switch ports.
The switch keeps track of which computers (identified through their MAC addresses) are connected to which switch ports.
Topology answers the question about how a network is physically wired. It also places constraints on the number of clients and how they are connected, not to mention the distances between systems. So knowing the topology in use gives the network technician an idea of limitations and growth potentials, not to mention troubleshooting.
What ports are considered hot-pluggable?
Hot pluggable ports mean you can connect a device to your computer while your comptuter is still on and the device will work. Sometimes the operating system will do some configuring automatically without your help and make the device work.
The 1 bits indicate the use and presence of the network id information. 0 bits represent the location of client information.
it depends
Traditionally a hub or repeater would put signals on all other nodes connected to it. If this is a broadcast signal, then any device (with the exception of a router) would present signals to all other devices connected to it.
How do you hookup a non WiFi computer to the internet?
You can connect it through a traditional network cable. The computer needs a network card for that.
It is still possible to get dial-up service over a telephone line. You can search for a local ISP (Internet Service Provider) that still supports dial-up access. Net-Zero is one such company. This requires a modem port on your computer. (don't confuse with an ethernet port, the connectors look similar, but the ethernet connector is wider than the phone line connector).
On a windows system you can check for a Modem or Network adapter with the Windows Device Manager.
If you have a Network adapter, usually some ethernet controller, you can get ADSL or a cable modem. If you don't have a network adapter (with an ethernet port). You could buy one.
ADSL service uses your phone line, it splits the signal so you can use your phone and computer at the same time. Contact your local ISP.
A cable modem, is provided by some TV cable services.
With both ADSL and a cable modem service connect to your ethernet port.
If you have USB ports you can buy a WiFi adapter and plug into a USB port on your computer. (You can also buy a WiFi card and plug into your computer chassis. This will require that you have access to a wireless network. You can buy a ADSL modem with wireless, or add a wireless access point to your ADSL or cable modem.
3G service is available, but expensive.
Summary, find a local ISP, they can help you.
Dial-up is very slow, and not very useful, downloading pictures, updates, new software is very, very slow.
Think about adding wireless to your computer via a card or USB adapter. It means no ugly cables to manage, can handle multiple computers.
What is a secondary server takes over in case of primary server failure?
What is (the name?) (of) a secondary server (who) takes over in case of primary server failure?
That would be a BDC. A Backup Domain Controller.
What is the difference between a techniques and protocol?
A protocol is a set of rules which is used by computers to communicate with each other across a network. A protocol is a convention or standard that controls or enables the connection, communication, and data transfer between computing endpoints. In its simplest form, a protocol can be defined as the rules governing the syntax, semantics, and synchronization of communication. Protocols may be implemented by hardware, software, or a combination of the two. At the lowest level, a protocol defines the behavior of a hardware connection.A technique is a procedure used to accomplish a specific activity or task.
What is the difference between Ethernet and serial?
Ethernet is the Technology which is Best Situated to LAN , Ethernet has all Features which LAN Need
Like High Bandwidth cost Of Deployement,and Coverage
Where as Serial Technology,
is Best Situated for MAN and WAN , they received data in packet and transmit to long distance they have Control Signal Also who Safe data from error and Corrupt
In Ethernet data are not check Bit Wise(LAck of Control Signal)
In Serial Technology data are check Bit Wise
It assigns a value that represents an infinite metric to the poisoned route.
It sends back the poisoned route update to the same interface from where it was received.
How do you achieve redundancy for your DNS server?
DNS Redundancy is achieved by listing multiple servers, such as NS1.domain.com, NS2.domain.com, in your domain's DNS settings. You must list at least two servers, and can list 4 or more. If you are using a web host they will provide the server names where your web site is hosted for correct DNS locations. The registrar must provide redundant servers to ICCANN for your domain name in order for your web site to be found on the WWW.
When a web browser looks for your web site, it searches the web for your server's IP, such as 10.00.00.00, a numerical listing that routes the browser much like the telephone switching system does. If your browser cannot reach the first DNS listed, it will be routed to the next on the list, and the next, if available.
VLAN
Depends on your operating system. You may be able to set up an 'ad hoc' wireless network.
