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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
What is a protocol does not include subnet mask information in its messages?
Classful Routing Protocol
What does WPS means which is printed on ptcl router model KW5815?
WPS or WiFi Protected Setup is used to connect to your wireless AP. It has 2 methods one is WPS button and second is WPS pin.
1. WPS Button (usage):
When you try to connect an "Wireless Access point" a dialouge box comes up asks for the Password that should be entered in order to connect to the "wireless AP". At this stage you can either enter the password or you can use WPS button. while the password dialouge box is open. in windows 7 "Connect to a Network" dialouge box says "You can also connect by pushing the button on the router". if you don't want to connect with AP by entering password you can push the "WPS Button" on your "PTCL" device. and there you go, you are connected to your WiFi.. :)
2. WPS PIN (usage):
NOTE: make sure your PIN is active in the settings of your PTCL device!
How do you fix your DNS server?
If you are not hosting on your own servers, you would need to contact your domain host.
it could be a firewall blocking icmp outbound traffic from said machine, if the machine can still access network functions such as the internet and lan printers its tcpip stack is still intact it could be a firewall blocking icmp outbound traffic from said machine, if the machine can still access network functions such as the internet and lan printers its tcpip stack is still intact.
NetViz is a network visualization software package that's nearing end-of-life. It is, however, still a powerful and viable tool for documenting, visualizing, and distributing your network infrastructure. NetViz takes data from an ODBC compliant database and links it to diagrams you create of your network nodes and links. It supports interdiagram links, data refresh, and nested drawings, allowing you to start depicting a network at a global level and taking it down to component or even pin level detail. A pretty slick package. NetViz was developed around 1999 or so (IIRC) and was subsequently purchased by Concord and then CA. It is still widely in use but is no longer being actively supported.
Difference between coaxial cable and STP cable used for computer networking?
Difference between coaxial cable and STP cable used for computer networking?
What protocol manages addressing for multicast groups?
IGMP
(I)nternet (G)roup (M)ulticast (P)rotocol AKA: Internet Group Management Protocol.
How can you remove a libelous Google Group Entry defaming a person?
I would to like to know how to do this as well. Most times the internet is helpful...Other times, it's a nightmare when there's a slanderous article on google that shows up under your name! Someone please help!
How can you hack nearest WI-FI tower to surf net for free?
For starters, that is an illegal act.
Oh, and in order to get in you need to have the IP address of the tower and possibly crack the password.
ILLEGAL ACT!!! DO NOT ATTEMPT!!!!! YOU WILL SPEND 12+ YEARS IN PRISON!!!
Suppose transmission channels become virtually error free.Is the data link layer still needed?
The data link layer is still needed for flow control over the transmission channel and for framing the data. In a multiple access medium such as a LAN, the data link layer is required to coordinate access to the shared medium among the multiple users.
If we are sending a file in one go and if some error occurred in between the file transfer then the complete file has to be resend which wastes the bandwidth so to prevent this, the file to send is divided in to smaller unit which we call packet, and then send packets 1 by one so that if a packet is lost then we need to send only that particular packet not the complete file. As the packet reaches its destination, the destination source send acknowledgement to the sender that the packet has reached to it and it may send the next packet and if packet somehow lost before reaching to the destination source, then the sender itself resends the packet after a fixed amount of time.
What Switching breaks data into packets before they are transported?
Packet switching breaks the original data into smaller segments per packet before transmission. This is done in the layer 4 transport layer of the OSI model.
Line discipline Function in Data link layer?
Line discipline is way of synchronization, so that two communicating devices do not send information at the same time, especially in half duplex transmissions.
What determines if the router implements a classless route lookup process?
The command ip classless is enabled on the router.
true
When Given a budget of 200 to connect 5 computers would you choose a a wired system or wireless?
Brian Chadwick sucks
How optical fiber is used in front sight of handgun?
Very generally speaking, a fiber optic front sight is easier to see because the fiber optic draws in light.
How did Nortel Networks begin?
Nortel Networks began life as the manufacturing arm of Bell Canada, but by the 1950s a majority of its shares were owned by Western Electric, then a subsidiary of AT and T
What is wins and when do we use it?
Windows Internet Naming Service.
It was used with a WINS server in older MS networks for name
resolution.
Newer MS Server OSs are tightly integrated with DNS and don't require
WINS.
WINS and DNS can only used for name resolution in a client/server
network, such as a Windows domain.
A workgroup (peer-to-peer) network uses NetBIOS over TCP/IP for name
resolution
What do the numbers stand for in an ip address?
(I am assuming the question refers to IPv4 addressing. For IPv6 addressing the idea is the same, but the specifics of implementation differ.)
An IP address is a numerical representation of a unique computer in the relative "address space". What that means is - in the particular network using this address space, that specific address uniquely identifies a specific computer (as long as it has that address), or alternatively - a network-capable device other than a personal computer (a router or a network printer are two good examples).
Each time someone connects to a web page, for example, they are connecting to another computer somewhere elsewhere in the world - and that computer must have its IP address too.
An "address space" is a specific range of addresses "routed to" (and assigned) in a network segment (a distinct group of computers). Simply put, an "address space" is a bunch of addresses that can be assigned to computers within a network, and which would (when assigned) enable these computers to communicate with each other directly without the need to use special means (routing) to reach each other. The Internet - often called a "network of networks" - assigns these addresses (in this case known as the "global pool") to subnets, so that they can "see" each other, but that is a yet another matter.
The four numbers separated by dots in an IPv4 address are called "octets", because each of the numbers can be represented by 8 bits. The lowest number recorded so is 0 (binary 00000000), the highest - 255 (binary 11111111). These four numbers together uniquely identify one specific "destination" (explanation of routing and/or address masking - or NAT - are beyond the scope of this answer).
It may be easier to understand this by an analogy: when you write down someone's address, it consists of a name, a street name and number, a city, and a country. So someone's address could easily be written as such:
Country . City . Street No . Name
The networks are, of course, not divided into such "zones" as Cities or Streets. Something like "USA . New York" is valid, but in this method "New York . USA" is not, since there is no country named "New York". Computer IP addresses are not "zoned" this way, so "128.255" is as valid as "255.128", just points somewhere else.
The values (0-255) also define how many computers are "addressable" in such way that they can "see" each other and communicate directly. Think "how many countries" by "how many cities" by "how many streets" and so on. So, if the first computer that can be addresses is 1.0.0.1, and the last 255.255.255.254 (taking into account the requirements of the protocol), there are possibly 254 * 255 * 255 * 255 - 1 addresses available in any given pool. That is some 4 211 669 249 unique addresses!
Of course, the global address pool is divided into sub-networks and "ranges" which are then assigned to countries to further assign (mostly sell) to their people. That makes the global pool somewhat "chopped up", and as a result, not all addresses end up being available. IPv6 is designed specifically with the availability problem in mind, extending the address' length so that potentially "every ant on the planet could have an IPv6 address".
