POP (Short for Post Office Protocol) is a protocol used to retrieve e-mail from a mail server. Most e-mail applications (sometimes called an e-mail client) use the POP protocol, although some can use the newer IMAP (Internet Message Access Protocol).
There are two versions of POP. The first, called POP2, became a standard in the mid-80’s and requires SMTP to send messages. The newer version, POP3, can be used with or without SMTP.
POP: Short for point of presence, an access point to the Internet. ISPs have typically multiple POPs. A point of presence is a physical location, either part of the facilities of a telecommunications provider that the ISP rents or a separate location from the telecommunications provider, that houses servers, routers, ATM switches and digital/analog call aggregators.
What does POP mean to you?
You would probably most likely encounter it when setting up your hosted email on your local email client (such as Outlook or Eudora).
POP3 is also referred to as “incoming email” by most of the clients. If you host your own domain and email service, and need to know what your specific POP3 is, you must ask your hosting service provider.
If you use public email services, such as Gmail, there is no need for you to know your POP3.
Folks, here is a quick and very informal list of what you can do to spring-clean our PC and computer network.
When doing any major changes or upgrades to your computer, always consider using professional help, and start with a good backup.
Back them up again if you have to. Nowadays you don’t need to be explained why you need to backup files – backup, disaster recovery and business continuity are on top of every business owner’s to-do list. Just do it.
Clean out old and unused programs
Chances are you have programs you don’t use, but they still take up disc space and impact your system’s performance. Spring cleaning is the time to decide what you use and what you don’t.In Windows, go to theControl Panel>Add/Remove Programs. Select programs you haven’t used in a year or more, and those you are not planning on using altogether, to be removed. On Macs you can openLaunchPad, then drag and drop the icons of your unused and underused programs into the trash. It’ll do the rest. Purging your old and unused programs will improve your computer’s performance speed.
Clean the system’s registry
Your system probably keeps a lot of temporary Internet files, cookies, and browsing histories over the periods of time, and their accumulation may be among reasons why yourcomputer keeps freezing. There are several tools you can use to clear out old registry entries, empty trash and delete temporary and unnecessary files – it will help speeding up your computer’s performance.
Defrag your hard drive
If you have never done adefragment(a defrag, as this process is commonly refered to it) and worried about doing so by yourself – call your tech support for assistance. If you feel that you can take it on, defrag your drive. It would organize the contents of your computer to store files into the smallest number of contiguous regions (fragments). It would also attempt to create larger regions of free space using compaction to impede the return of fragmentation. Some defragmentation utilities try to keep smaller files within a single directory together, as they are often accessed in sequence. In Windows 8 you’ll find this by searching defragunderFiles, on older Windows systems go toProgram Files>Accessories>System Tools. Performing a defragment may takes a long time, perhaps even several hours, so your system will be unavailable for use during a defrag. A good idea is to run it while you are busy doing other things not involving your PC.
Make sure all program are up-to-date
Your operating system and all software programs have to updated to the latest versions available, as these updates include the latest security patches. Updates should be on your list of top priorities when it comes to your PC and computer network. Older versions are at higher risk of being compromised by malicious hack attacks. On Windows, navigate to Start>Control Panel>All Programs>Windows Update. The system will guide you through the rest when updates need to be installed on your computer. If in doubt, click onCheck for updateslink to confirm your system does or does not need updates. On iOS systems, click on theApp Store>Updates at the top of the window.
Perform a deep and full system security scan to remove any harmful files. Just to be safe, scan any external backup drives and attached mass storage devices, too.
Look into security
If are not using a full security suite, consider one: check out2013 top 10 anti-virus security suites reviews. then run a deep and full system scan to remove any malicious files. Just to be safe, scan any external backup drives too.
Change your passwords
This should be obvious. Make them new, fresh – and change them not just on your PC, but in other places, too.
And give your PC some love!
Your system gets dirty over time. To clean your equipment, first, make sure everything is powered off. Wipe off your monitor with a damp cloth, shake out and/or spray your keyboard out with compressed air, and scrub the keyboard with a damp, mildly soapy solution to clean off the oils from your hands, coffee stains (you know who you are!) crumbs, dust and so on.
As Wikipedia defines it, a local area network (LAN) is a network that connects computers and devices in a limited geographical area such as home, school, computer laboratory, office building, or closely positioned group of buildings. Each computer or device on the network is a node.
Current wired LANs are typically based on Ethernet technology; new standards also provide a way to create a wired LAN using existing wires (coaxial cables, phone lines and power lines).
The defining characteristics of LANs, in contrast to WANs (Wide Area Networks), include their higher data transfer rates, smaller geographic range, and no need for leased telecommunication lines. Current Ethernet or other IEEE 802.3 LAN technologies operate at speeds up to 10 Gbit per second data transfer rate. IEEE has projects investigating the standardization of 40 and 100 Gbit/s.
LANs can be connected to Wide area network by using routers.