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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 use dynamic pass box?

  1. Dynamic pass box need to be installed between two different classified area/rooms for material pass through. The purpose is to provide barrier between areas & to sweep away the particulate load if present on surface of object being transferred to more clean area.

What are the guidelines for securing a router on the network?

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Fiber optic cable has a bandwidth of about how many GHz?

Bandwidth is measured in bits eg Gigabits (Gb) Megabits Mb not to be confused with Gigabytes as in "how many Gigabytes of RAM/Hard Drive space does your computer have?"

When abbreviated gigabits is Gb (with the "b" as a lower case) vs. Gigabytes which uses a capital B in the abbreviation

The difference is important because there are 8 bits in a byte so mixing the two up tends to throw off one's calculations.

Anyways back to the topic on hand, there are MANY different types of fiber data cables with various bandwidths, such as ones you would find in a datacenter, some server setups, or connecting a number of switches in a large network.

4Gbit/sec & 8Gbit/sec are fairly commonplace though 10Gbit/sec is becoming more and more widely used.

there are also OC connections (from OC 1 or 2 or 12 all the way to OC -768 which is upwards of 38 Gbit/sec and generally only used as the backbone of large enterprise networks)

Then there are the cables that run under the ocean and connect continents (theres over 176 of these)

Now these cables have many, many individual fiber optic strands in them and have bandwidth of hundreds or thousands of Gbits/seccond

I also have some older 24 and 36 port switches kicking around that have 1 Gigabit fiber connectors, however that is the standard these days for desktop and laptop computers (for wired, not wifi) although thats using the copper wire Cat-5 or Cat-5 cables which are much cheaper so the 1Gbit fiber is obselete unless you're trying to use it for long distances, as fiber optic cables -transmitter depending- have much less attenuation (signal degridation) than copper and transmitter depending can go through cables that are several kilometers long without needing a repeater.

Hope this helps

In which of the following concept s did john hus believe?

The question is incomplete. There are no options given (for "which of the following") to answer this question.

Are DMA channels part of a system resource?

Formally no, since 'resource' refers to something consumable, like RAM or CPU time. Rather, DMA channels are encountered to be a part of hardware infrastructure.

What are the network addresses for each layer in the OSI model?

The OSI model is a simple framework for categorizing the different layers that make up network communication. There is no direct relation between the OSI model and any network address or protocol.

In fact, most network protocols don't fit neatly in to the OSI model. TCP/IP, for example, spans the data-link, network, and transport layers.

Has there been a lot of coumper hacking?

All I can tell you is that the issue is fraught with hype. A lot of people make a lot of money by making out that computer hacking ('cracking') is a bigger problem than it really is.

'hacking' and 'cracking' are two different things. Technically it would be impossible to be arrested for 'hacking' because hacking is completely legal. 'Cracking' is illegal.

How do you open your UDP ports 123456 and 50001 on your router or firewall?

Port 123456 does not exist. To open port 50001 you need to change settings for your port routing tables. Without knowing the exact model of your router it's virtually impossible to help you.

Do you need to set your route up with wep?

It is not necessary to protect your wireless signal with an encrytion key, such as WEP, WPA, etc., but keep in mind that if you don't, anyone can access your wireless internet. Unauthorized accessers can slow down the connection and hack whatever else is connected, such as computers, for sensitive information, such as credit card numbers.

The Nintendo DS supports WEP and WPA security ONLY. All other consoles that use wireless support more advanced encryption, such as WPA-PSK.

What layer does stateful inspection work at?

Stateful inspection works at Network Layer .

Many Thanks,

Chinmoy Roy

What services are provided by the company Network Products?

Upon researching to find information about what services are provided by Network Products it has been discovered that there is not a company by that name. There are a number of companies that sell network products which are products that are used with technology and networking of computer systems.

What does your IP tell about you?

You can locate the Country, Region, City, Latitude, Longitude, ZIPCode, Timezone, ISP, Domain, Netspeed, Areacode and Weather of your IP address.

To the ISP or the authorities, they can obtain your account information, and thus your name and address.

How do you get to the 192.168.2.1?

Getting to 192.168.2.1 is fairly simple. Just open the internet browser such as Internet Explorer and type on the address bar as 192.168.2.1. It will take take you to the administrator console where you can modify the router. Here you can setup the router capabilities such as PPPOE, PPPOA, Firewall settings and others as such.

What is the definition of conditional expectation in weak topology?

If the network is very basic but much is expected of the network then some people would classify the topography as weak. Appropriately designed and maintained networks are important when they do work and vital when they stop working.