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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
Does a DSL operate at layer 3 of the osi model?
No. A digital subscriber line (DSL) operates at layer 2 or the Data-link layer.
Where is located the AOSS button in a dlink router?
That depends on brand of your router. If your router has such button it would be somewhere of the top in visible place. If you can't locate it quickly most likely the router does not have one.
How many times IP address can be assigned in the internet?
One per independent network that it is connected to.
For example a computer connected to two ethernet networks (via different adapters) and to a wi-fi network will have 3 different IPs assigned: one for each net.
It is more typical for a computer to be connected to only one network at a time, in which case it would never have more than one IP assigned.
What is a Modem and what is its function in communication?
First modem is the one device that connect the telephone with compute. But Now the days modem is used direct in the laptop and we are use the internet with help of the modem. Modem is provide us lot of facilities to use the new any were and very helpful for us. So this is a some important point of the modem..
these few words are written by SSS
What is the Difference between datagram network and virtual circuit network?
In a Datagram Network, there's no "network-layer-connection" between the two hosts. So Theres no garuanteed bandwith and the packets may take different paths.
In a Virutal Circuit network, its oppositly and a connection is established.
------------------------------------------------------------------------------------------------------------ •There are a number of important differences between virtual circuit and datagram networks. •The choice strongly impacts complexity of the different types of node.
•Use of datagrams between intermediate nodes allows relatively simple protocols at this level,
-but at the expense of making the end (user) nodes more complex when end-to-end virtual circuit service is desired.
•The Internet transmits datagrams between intermediate nodes using IP. •Most Internet users need additional functions such as end-to-end error and sequence control to give a reliable service (equivalent to that provided by virtual circuits).
•This reliablility may be provided by
-the Transmission Control Protocol (TCP) which is used end-to-end across the Internet,
-or by applications such as the trivial file transfer protocol (tftp) running on top of the User Datagram Protocol (UDP).
What is the application of encryption?
Cryptography is used to ensure message security during transmission. An example is the use of codes to hide your identity and transaction details when purchasing goods over the internet via you credit card.
Distinguish between udp and tcp protocol found in transport layer?
TCP (Transmission Control Protocol) is considered to be a 'reliable' protocol for the transport of data. This is because it uses a applies a conversation mechanism that involves establishing a connection (a process known as 'hand-shaking') before sending the data and waiting for the receiving computer to reply.
If the receiving computer didn't get the complete data (e.g. it didn't arrive or it was corrupted) then it will request that the sending computer retransmits the data.
UDP (User Datagram Protocol) is considered to be an 'unreliable' protocol because it does not bother with the hand-shaking or the error checking. Data is transmitted and is assumed to arrive at the other end. It's up to the Application Layer (not the Transport Layer) on the receiving computer to sort out the datagrams that arrive and check that they're not corrupted.
IF the receiving computer is going to request missing or damaged UDP packets then it's up to the application to do so, not the Transport layer.
What is the difference between manageable and unmanaged switches?
If you have a mnagable one you can change setting such as packet filtering, firewall, protocol filtering and so. If you have a unmanagable on you cannot change its settings. Usually managable switches are much more expensive than unmanagaable ones because of its flexibility.
What is a primary duty that a server provides?
->Database server is the term used to refer to the back-end system of adatabase application using client/server architecture.
->The back-end, sometimes called a database server, performs tasks such as data analysis, storage, data manipulation, archiving, and other non-user specific tasks.
->it uses structured querry language(sql) for this purpouse.
How do you use a wireless router with a computer?
You have to turn on the DHCP server and assign the ip address range. It should be written in the manual how to set up the DHCP server. If you don't have the manual you can download it form the manufacture website, if you cannot find it at all just tell us the router model and we'll try to help you.
What type of address is ipv4 address?
The address space of IPV4 is limited to 4294967296 possible unique addresses.
More Information:
Each owner of a computer which is connected to the web through an ISP [Internet Service provider] is allocated a web address of the form a.b.c.d where a, b, c and d are integer numbers between 0 and 255.
An example of a web address is 23.8.231.127
Now then, a static web address is one that is manually assigned to your computer by a network or computer administrator. The result of this manual assignment is that your IP address always stays the same until/unless you manually change it to something else yourself. To be able to manually assign a static IP to your computer that can be used on the internet you must first ask your ISP to allocate a static IP for you to use. They will then tell you what IP they have set aside for you to use, and you may then manually input that IP into your computer.
On the other hand, a dynamic address means that the address that is automatically assigned to your computer by your ISP each time you log onto the internet. IPs that are allocated dynamically are usually different every time you log on to the internet.
A common misconception is that a static IP is the same thing as an IP that doesn't change. While it is true that a static IP does not change, it is not always true that an IP that doesn't change is a static IP, as this is not the defining characteristic of a static IP. An IP that does not change but is still automatically assigned by your ISP is sometimes referred to as a "sticky IP" to distinguish it from a true static IP. By definition, if you do not manually enter the IP address directly into your computer, it is not a static IP address - even if the address that is automatically assigned to you never changes. There are two reason why the distinction between static IP and "sticky IP" is critical:
1) Static IPs can have their authority delegated to a DNS server of your choosing for reverse DNS resolution. "Sticky IPs" cannot do this, and reverse DNS resolution will always resolve to the ISP that is assigning them. This is important for many business-class services, such as email, where the correct reverse DNS resolution is necessary for the service to work properly.
2) When you have more than one "sticky IP" from your ISP you cannot guarantee which computer will be automatically assigned to which "sticky IP". This is opposed to true static IPs, because by definition you enter a static IP directly into the computer, so you can guarantee which computer always uses which IP. To illustrate this point, consider computers A and B, and IP addresses 1.1.1.1 and 1.1.1.2:
Computer A is statically assigned IP 1.1.1.1, and computer B is statically assigned IP 1.1.1.2. The power goes out, and then comes back on. When both computer A and computer B are finished booting, they each have the same IP address as they did before the power went out because their IP addresses were set directly into the computers themselves.
Now consider a "sticky IP" situation. Computer A logs into their ISP and the ISP assigns computer A the IP 1.1.1.1. Computer B logs in after computer A and the ISP assigns computer B the IP 1.1.1.2. The power goes out, only this time computer B is the first to boot up and connect to the internet. The ISP may now assign IP 1.1.1.1 to computer B as it is the first computer to reconnect. Anybody on the internet that is expecting to reach computer A with the IP 1.1.1.1 will now be communicating with the wrong computer.
What is the difference between a wired router and a wireless router?
Wired internet is where a physical wire is connecting you to the internet, such as a Ethernet cable going into the Ethernet port on the back of your computer. Wireless internet uses digital radio signals in the air to transfer data from a wireless router to a computer with a wireless adapter (built in or external)
RJ11 is a physical interface often used for terminating telephone wires. It is probably the most familiar of the registered jacks, being used for single line POTS telephone jacks in most homes across the woeld
Internet (www - world wide net). ;-)
What is the pin for belkin router f5d7234-4 v3?
the pin code is on the label in the back of the unit ...my is 45216909..but once I used this code, my wireless still recognize the pin..any solution?
When attempting to network my computers, I was prompted to enter an 8-digit pin which is supposedly found on the bottom of the router. It wasn't, of course. So I called Belkin (877 736 5771) and was told that they could assist in resetting my router's pin, to effect a bypass which would allow me to network, in the absence of m router pin. I didn't proceed for unrelated reasons. Anyway, if you don't have your pin, and need it, call Belkin. 'Hope this helps.
What is a device on a network called?
A device on a network are gateway, router, bridge, switch, hub, repeater, multilayer switch, protocol converter, bridge router, digital media receiver, proxy, firewall, and network address translator. A computer on a network is called a networking computer. http://en.wikipedia.org/wiki/Computer_networking_device
What Refers to the huge network of computers that meets the diverse computing needs of a company?
A network of computers that act as a single unit for purposes of a large company's computing needs is referred to as a "cluster." These are usually in the form of rack-mounted servers that have a Gigabit backbone on its back plane, but this is not necessarily true depending on the hardware used. Larger computer clusters might be connected between racks with fiber optic carrier lines to improve response times between the units within a cluster.
Which osi layer is associated with firewall?
it may be network layer or transport layer.. it depends on the design of the firewall.. also depends on the requirement specification..
Which of the following is a system that helps maintain the proper function of a wireless token ring?
beaconing
Simple answer is:
In order to connect to your switch or to do some troubleshooting of the links connected to the switch you require an ip add binded on the switch, therefore to access it or troubleshoot any link connected to it an ip add is used.
Detailed answer:
For Example lets consider a scenario in which a switch connected to 2 diff sites, A & B. Both A & B are using point to point ip to communicate with each other and are assigned a single VLAN 100 to pass through the switch.
Suppose if site B gets down due to any reason and you want to confirm it, you will access your switch and shutdown the port connected to site A because you are about to bind site A's ip address to your vlan interface, finally you will bind the ip address of site A to interface vlan 100 and then ping site B, if the ping response is not successful it means the problem exists in the path & vice versa. This detailed answer is just to clear the concept.
Regards,
Engr. Emad ul Haq
Can you split an Ethernet connection?
You need to use a router to do this. Most routers come with 4 ports ( 4 way split ) but this can vary.
How do you view history from your belkin router?
Yes, you can if your router supports it. Some routers allow to keep history for later viewing, others allow to save logs on external drives. And most of them keep history until you reboot the router.
