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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
Have you checked that the both are set up for sharing? Do the two machines have the same domain name?
What are the characteristics of a good system analyst?
Get a college degree and take up Computer Science courses majoring in Information and System Design. It depends on what majors (same as above) offered by the colleges or universities. Read a lot of books related in system designs for you to become a good system analyst.
Usually "network computer" refers to a computer whose primary function is to access the network and can't do much else on its own. Sometimes it is a dumb terminal with no processing power of its own, but more often it does have processing capabilities, but still less than a personal or business computer.
Network computers rarely exist outside large corporate networks, where they are generally assigned to very low-level employees with minimal computing needs.
Taken from RFC
" Early Media is the ability of two SIP user agents to communicate
before a SIP call is actually established. Support for early media is
important largely for interoperability with the PSTN. Unfortunately,
many SIP devices are providing this capability today without a well-
documented, consistent, and complete solution. We define the problem
of early media, document and describe the difficulties with the
current approach used in SIP UAs, and present a more formal protocol
mechanism that resolves these difficulties."
Usually people call wireless cards devices which you have to put inside your computer. Adapters can be connected to computer without disturbing its internal structure (usb. com ports and so on). But now days when people say adapter or card they imply the same thing. It means that people call internal cards and external adapters just adapters.
What ports are used by DHCP and the DHCP clients?
Requests are on UDP reversed port 68
&
Server replies on UDP reversed port 67
If the above is right, then you can allow those ports on Linux(Ubuntu) with:
sudo iptables -A OUTPUT -p udp --dport 68 -j ACCEPT
sudo iptables -A INPUT -p udp --dport 67 -j ACCEPT
Oh and don't forget to erase the password timestamp:
sudo -k
Further info in "man sudo"
Who came up with the galactic network concept?
It was J.C.R. Licklider that came up with the concept of the Galactic Network. Licklider was a researcher and professor at the Massachusetts Institute of Technology.
How many bits can the HCS12 CPU manipulate in one operation?
As it is 16bit processor it can manupulate 16 bits in one operation
PFFT is an expression of dismissal. It is sometimes used as an expression of lack of interest or a descriptive word for a sound that represents an abrupt sound like a slight explosion or impact. PFFT can stand for Pre-Corrected Fast Fourier Transform.
Advantages of computer networking?
The Advantages (Benefits) of Networking
You have undoubtedly heard the "the whole is greater than the sum of its parts". This phrase describes networking very well, and explains why it has become so popular. A network isn't just a bunch of computers with wires running between them. Properly implemented, a network is a system that provides its users with unique capabilities, above and beyond what the individual machines and their software applications can provide.
Most of the benefits of networking can be divided into two generic categories: connectivity and sharing. Networks allow computers, and hence their users, to be connected together. They also allow for the easy sharing of information and resources, and cooperation between the devices in other ways. Since modern business depends so much on the intelligent flow and management of information, this tells you a lot about why networking is so valuable.
Here, in no particular order, are some of the specific advantages generally associated with networking:
- Connectivity and Communication: Networks connect computers and the users of those computers. Individuals within a building or work group can be connected into local area networks (LANs); LANs in distant locations can be interconnected into larger wide area networks (WANs). Once connected, it is possible for network users to communicate with each other using technologies such as electronic mail. This makes the transmission of business (or non-business) information easier, more efficient and less expensive than it would be without the network.
- Data Sharing: One of the most important uses of networking is to allow the sharing of data. Before networking was common, an accounting employee who wanted to prepare a report for her manager would have to produce it on his PC, put it on a floppy disk, and then walk it over to the manager, who would transfer the data to her PC's hard disk. (This sort of "shoe-based network" was sometimes sarcastically called a "sneakernet".)
True networking allows thousands of employees to share data much more easily and quickly than this. More so, it makes possible applications that rely on the ability of many people to access and share the same data, such as databases, group software development, and much more. Intranets and extranets can be used to distribute corporate information between sites and to business partners.
- Hardware Sharing: Networks facilitate the sharing of hardware devices. For example, instead of giving each of 10 employees in a department an expensive color printer (or resorting to the "sneakernet" again), one printer can be placed on the network for everyone to share.
- Internet Access: The Internet is itself an enormous network, so whenever you access the Internet, you are using a network. The significance of the Internet on modern society is hard to exaggerate, especially for those of us in technical fields.
- Internet Access Sharing: Small computer networks allow multiple users to share a single Internet connection. Special hardware devices allow the bandwidth of the connection to be easily allocated to various individuals as they need it, and permit an organization to purchase one high-speed connection instead of many slower ones.
- Data Security and Management: In a business environment, a network allows the administrators to much better manage the company's critical data. Instead of having this data spread over dozens or even hundreds of small computers in a haphazard fashion as their users create it, data can be centralized on shared servers. This makes it easy for everyone to find the data, makes it possible for the administrators to ensure that the data is regularly backed up, and also allows for the implementation of security measures to control who can read or change various pieces of critical information.
- Performance Enhancement and Balancing: Under some circumstances, a network can be used to enhance the overall performance of some applications by distributing the computation tasks to various computers on the network.
Entertainment: Networks facilitate many types of games and entertainment. The Internet itself offers many sources of entertainment, of course. In addition, many multi-player games exist that operate over a local area network. Many home networks are set up for this reason, and gaming across wide area networks (including the Internet) has also become quite popular. Of course, if you are running a business and have easily-amused employees, you might insist that this is really a disadvantage of networking and
3. Unlike Ethernet, Token Ring uses a ring topology whereby the data is sent from
one machine to the next and so on around the ring until it ends up back where it
started. It also uses a token passing protocol which means that a machine can
only use the network when it has control of the Token, this ensures that there are
no collisions because only one machine can use the network at any given time.
Why can't you connect to the port 80?
It can be at least 3 cases.
1. The site doesn't exist anymore.
2. You filrewall is blocking your request.
3. The website which you want to log in is blocking your request.
How do you connect two computers with the same IP to another computer?
You cannot do. If you have static Ip addresses then just change one of them to a different one. I would not believe that you have two equal dynamic Ips, unless it's from different routers (dhcp servers).
What is physical communication?
Physical communication is where you talk to someone using hand signals or some physical contact to describe your conversation. For example, using American Sign Language (ASL) while communicating with a deaf person.
The first connection is into a Cable Modem ... from there the signal can go to a Router and then on to different computers.
In wi-fi connection setup for diamond what do they mean 'enter WEP key?
In the typical Wi-Fi connection setup, a WEP key is a password that is used to allow exchange of encrypted messages among the members of a Wi-Fi network. WEP means Wired Equivalent Privacy.
In computer science, data modeling is the process of creating a data model by applying a data model theory to create a data model instance. A data model theory is a formal data model description.
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The method of enabling DHCP depends on the OS in use. On Windows, DHCP can be enabled by activating the 'Automatically choose IP address' setting in the connection properties dialogue box of the connection.
File Transfer Protocol (FTP) is found in the TCP/IP stack of the Application Layer of the OSI reference model. FTP is specialized for sending and receiving files.
How can I connect PC to Laptop via infrared?
You can connect a PC to a Laptop via infrared by ensuring that their respective dongles have a clear line of sight between each other. You also need to have the appropriate infrared client software installed on both computers.
There many advantages of a file server they include: Data Security and Backups, Centralization of Data, Remote Access, User Control, Employee Monitoring and data recovery. For businesses a file server is essential.
Name some GPO settings in the computer and user parts?
Group Policy Object (GPO) computer=Computer Configuration, User=User ConfigurationName some GPO settings in the computer and user parts
