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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
By using the methods taught and the knowledge you have gained during your course.
What uses a double ring of multimode or single-mode fiber to transmit data at speeds of 100 Mbps?
FDDI
The zebra menu is similar to a context menu within Windows Applications.
We use the Zebra Menu to manipulate any asset on our Prezi Canvas.
The Zebra has 3 main uses plus a couple of subsidiary uses.
1) To drag your asset around the canvas.
2) To resize your asset and
3) Rotate your asset to a chosen angle.
You can also use the Zebra to edit text and images and manipulate the layer levels of the said asset.
To see a more comprehensive tutorial on the Zebra Menu, see the related link.
Bell Labs. You leased them from AT&T, just like you leased your phones. Nobody else could legally even make them because it was illegal to connect non-phone company equipment to phone company lines.
The first modems were used to connect SAGE air defense computers together via leased long distance telephone lines making the first computer network.
Why are standards so important in communications?
Because in order to communicate both parties need to understand each other. If two people do not speak the same language, it is very hard for them to understand each other. If communications equipment are using different standards, they will not be able to communicate. So agreed standards have to be used in any form of communication.
$10-30 depending on size or length, type (cat 5 or cat 6) quality, and whether you are paying full retail for an item that is normally discounted
What are programs that run independently and travel between computers and across networks?
Sounds like a definition of computer virus to me.
The correct answer is actually a worm. They may be transmitted by any type of file transfer, including e-mail attachments.
What is Decbit algorithm for congestion avoidance?
In congestion avoidance, each router monitor the load it is explicitly notify the end node ,when the congestion is about to occur.This notification is implementing by setting a binary congestion bit in the packets that flow through the router, known as DECbit .The destination host then copies this congestion bit into the ACK it sends back to the source. Finally, source adjust its sending rate so as to avoid the congestion.
Does network or internet providers pay websites or domain holders for internet traffic?
Yes, Internet service providers do pay the website for the traffic. Each website will have a fixed price. The Service provider has to pay what the website issues.
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Actually... Internet service providers do not pay websites or domain holders for traffic.
Think of it this way, the internet is like a road with businesses on either side of the road, the Internet service provider (ISP) maintains the road, and each business pays rent on their location (the domain and web hosting).
The road maintainers don't pay the business owners for the privilege of serving traffic there, each business has to earn money and pay rent on their own
As a rule a hub does not contain a repeater. Amplifiers would be used in analog communication, not digital communication.
Attenuation is a process that occurs all the time in networks; you would place a repeater in an area where the attenuation would cause the signal to degrade to the point where it wouldn't be usable. You would want the repeater to be placed before that point.
Implementing Distance-vector routing protocol?
First you must decide what specific protocol you want to use. Then you configure it on the individual routers. Example, with Cisco routers: Router(config)#router rip Router(config-router)#network 10.0.0.0. Router(config-router)#exit Additional commands may be required for optimization. Note: I use RIP for illustration purposes, but it is usually not the best option for routing.
First you must decide what specific protocol you want to use. Then you configure it on the individual routers. Example, with Cisco routers: Router(config)#router rip Router(config-router)#network 10.0.0.0. Router(config-router)#exit Additional commands may be required for optimization. Note: I use RIP for illustration purposes, but it is usually not the best option for routing.
First you must decide what specific protocol you want to use. Then you configure it on the individual routers. Example, with Cisco routers: Router(config)#router rip Router(config-router)#network 10.0.0.0. Router(config-router)#exit Additional commands may be required for optimization. Note: I use RIP for illustration purposes, but it is usually not the best option for routing.
First you must decide what specific protocol you want to use. Then you configure it on the individual routers. Example, with Cisco routers: Router(config)#router rip Router(config-router)#network 10.0.0.0. Router(config-router)#exit Additional commands may be required for optimization. Note: I use RIP for illustration purposes, but it is usually not the best option for routing.
What advantage does a statistical multiplexer have over a TDM multiplexer or an FDM multiplexer?
Statistical multiplexer does not reserve time slots or frequencies. Instead, it dynamically allocates bandwidth only when it is needed.
What are the advantages and disadvantages of operation buffering in operations management?
Operation buffering includes running interference in operations management. This includes parceling tasks to improve speed and efficiency. This allows cooperation and collaboration through the buffering agent for the benefit of the project.
As was given for a 4 Page, 1024 words & 64 frames (shown below)
4 pages -> 2^2 bits
1024 bytes -> 2^10 bits
64 frames -> 2^6 bits
Therefore:
Logical memory = 2+10=12 bits
Physical memory = 10 +6 =16 bits
The answer for this problem is 13.
8 pages -> 2^3 bits
1024 bytes -> 2^10 bits
32 frames -> 2^5 bits
Therefore:
Logical memory = 3+10=13 bits (Page + Word)
Physical memory = 10 + 5 =15 bits (Word + Frame)
How many people are employed by CERN?
CERN has about 3.400 ordinary employes (as of December 2007) and 8.000 guest scientists.
What is the difference between a network operating system and a desktop operating system?
Desktop OS is like windows XP professional or home edition, or Mac OS X. Network I believe is either one based on being in a network, like a cloud computing OS; or a server operating system, which tells the computer how to host websites and files in a network, including the internet.
No. No one person invented the internet, nor did any one organisation qua organisation.
The origin of the internet was the DARPANET. DARPA was the Defense Advance Research Projects Agency. Scientists and engineers working on these projects were widely spread geographically, and were in various types of organisation. Some were in obvious places like White Sands, Lockheed or Lawrence-Livermore labs; others were at MIT, Berkely, various other universities, defence contractors and government departments.
One thing they had in common was computers - fairly rare in the wide world, but they all had them. Another thing they had in common was slow communication with workers in other places. The third thing in common was they were all pretty smart. They established a network between the DARPA sites for rapid interchange of information and real time discussions. Almost all the things that are hidden behind the scenes on the internet came from DARPANET; the most obvious being the File Transfer Protocol or FTP.
The only fundamental change since then has been the development of the World-Wide-Web. This is a pretty name, but the invention was HyperText Mark-up Language, or HTML. This was due to Tim Berners-Lee, a British physicist; he happened to be working at CERN at the time but HTML had nothing to do with his work there which was on elementary particles. CERN did not invent the internet or the World-Wide-Web. The internet had been operating for some years before HTML was developed, and when it was the credit goes entirely to Tim Berners-Lee.
Dan Brown wrote in his book Angels and Demons that CERN invented the internet, along with many other things, but this isn't true. CERN is a real company, but they did not invent the internet! :DDifferentiate between desktop operating system and network operating system?
Assuming you're like the 99% who are using PCs or MACs: An operating system resides on your local computer and it's function is to allow the software to work with the hardware on that machine. A network operating system allows multiple computers to connect to each other, controlling the sharing of devices, files or programs. This resides on a shared computer called a "server". The computer then stores data on the server-side and not the client-side making it faster and more efficient. Instead of running a hundred computers with a full computer that it doesn't use all the resources and replace them with thin clients and gigibit network would make your network infrastructure 10x faster.
Sanyo Pro Xtrax Multiverse Projector Cleaning the filter?
Remove filter by pulling the front panel latch. Slide to left to remove the panel. Use canned air to blow out filter on both sides, or a vaccuum cleaner with a upholstery attachment. If the filter is very dirty, it will need to be replaced.
Is there a program that automatically changes your IP address?
There is no program to change your ip address. Your ip address is given to you by your internet service provider.
Is SSID the same as the network name?
Yes. It's the name that's assigned or that you give to your wireless network.
