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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

How Cisco network academy practical exam final 1-10?

Cand instaleaza o placa de retea in calculatorul unui client, un tehnician observa ca trebuie curatate contactele adaptorului. Ce solutie ar trebui sa foloseasca tehnicianul pentru a curata contactele?

Solutie pentru curatarea geamurilor

Alcool izopropil

Detergent slab

Alcool medicinal

Lichid de curatare usor abraziv

What is cable pulling in terms of fiber optics?

When used in terms of fiber optics, cable pulling is the act of pulling cables through wires while installing fiber optic services to a building or neighborhood. Some cable pulling can be done by hand and some requires special tools of the trade such as pulling grips.

What program operates remote desktop connection?

by default, windows has "mstsc.exe" or the Remote Desktop Connection by which it can connect to a system via network

Or you can google for many other such softwares like Team Viewer etc...

How does NAT allow private addresses to communicate over the internet?

NAT or Network Address Translation actually comes in several flavors. Simply NAT and NAT PT (Port Translation) are available in both IPv4 and IPv6.

NAT uses a router or Integrated Service Router to translate your private IP address to a public routable address. Most home DSL or cable modems provide NAT services. 192.168.0.0 through 192.168.255.255 are defined as private addresses or "Not routed over the Internet" addresses. There are other ranges such as 10. which won't be not routed over the public Internet

What NAT does is translate your private addresses to a public address or list of possible public addresses. PT which is sometimes referred to as port overload will send request using the same public address by associating the private address with a specific port.

Simply this means that even if only one public address is available many private requests can be serviced by assigning and then tracking a port assignment at the NAT point of service.

So if two NAT/PT serviced hosts both request different HTTP page downloads on the same public address each is assigned a different TCP port. When the request return they are routed to each private address based on the port number. Cool how it works.

This is not the same as proxies so don't get confused.

What does it mean when one gets a DNS error?

When somebody receives a DNS (Domain Name Service) error, it means that an internet browser cannot reach the wanted website due to reasons like a bad internet connection.

What are the pros and cons of Windows XP vs Windows Vista?

Windows XP

Pros

* Fast * Easily networkable

* Developer Friendly * Easy

Cons

* Not very secure * Lots of Backdoors * No photo-editing program that is of decent quality * No word-editing program that is of decent quality WIndows Vista

Pros

* Easier to use * more secure than xp * sidebar and search feature are new Cons

* differnet enough to confuse people * sometimes confusing * harder to install OS * Many programs do not work on Vista

What is color code of networking wall outlet for connecting patch cable?

The color code is the international standard adapted by IEEE to specify the right system for networking nods.

Do you have reviews on the Lightspeed writer steno machine?

I don't have one yet, but I have written on it, and it's amazing. Your best bet would be to go to depoman.com and join the LS Addicts groups there. They are an amazing bunch and are willing to answer the good and the bad. Good luck, Aleece DePuey

What is the zone of overlap?

The zone of overlap is the point where actin myofilaments overlay the myosin myofilaments as it (actin) gets pulled towards the m-line (mid-point of sarcomere). The zone of overlap increases during muscle contraction, resulting in the shortening of the muscle.

HTTP is classified as a protocol?

HTTP is classified as a stateless protocol. HTTP is classified as a stateless protocol.

How do you get word art on Google documents?

You cannot yet get word art on Google documents. But, you can copy and paste images.

Advantage and disadvantage of sparse index over the dence index?

Sparse advantage, less storage space required

Dense advantage faster since each index key is directly linked to a record key

What is LAN proxy mean?

If the internet is directly connected to the PC if the internet is connected to servers then the other pc's are connected in a LAN then the users in a LAN must change their LAN proxy settings in a browser

Where should 16-year-olds be looking for work in the local area?

sixteen year olds can look for work at fast food restraunts, skating rinks, bowling alleys, retail stores like walmart or target, and at the mall.

How do you configure a HTTP server using Windows XP and a Linksys Wireless router?

Windows XP was designed as a PC operating system, so it lacks much of the software needed to operate as a server. A couple of the needed items are World Wide Web Publishing Service and IIS(Internet Information Service). These services are used to manage and broadcast websites, and are not contained in XP. You may be able to find 3rd party software that will enable XP to operate as a web server, but I'd suggest going with Windows 2000 or 2003 so the functionality is build into the OS.

Which speed is higher download or upload speed?

The download speed is typically the faster speed offered on broadband connections to the Internet.

Most data plans for high speed broadband services feature a faster download speed, that an upload speed. This is fairly common and is called asymmetric. xDSL, aka digital subscriber line, has ADSL which is asymmetric, and SDSL with is symmetric. The download and upload speeds are the same for SDSL, and the download speed is faster with ADSL, but the upload speeds are slower.

My cable connection for data, for instance, is 20mbps down, and only 1.5mbps up. This is an asymmetric plan which is fairly affordable, however, if I tried to garner a faster upload speed, my rate plan goes up substantially for what appears to be a small increase in upload speed (nearly double the monthly cost for a mere 768k faster on upload speed) and for some connections purchasing more upstream/upload speed isn't even an option as it is restricted due to the distance you are from the drop (as is the case with xDSL technology).

How would a mail server on the internet locate the mail server?

Whenever mail servers talk to each other, they look for MX records at the destination's DNS. When a DNS server is setup for a domain and that domain has mail capabilities, their DNS server will have at least one MX record to denote which server handles mail. The root DNS servers for the internet denote the addresses for the SOA (start of authority) DNS servers for a particular domain.