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![]() Plug-in An add-on piece of software that can extend the features of an existing application. For example Netscape browser plug-ins allow displaying of new types of web content, that the browser can't display on its own. POP Post Office Protocol. Popular but inflexible email retrieval standard. All messages are downloaded at the name time and can only be manipulated on a client machine. Current version is POP3. Also see IMAP. Port A socket on the computer or other network device used to connect it to the network. PPP (Point to Point Protocol) A network protocol widely used to connect computers to the Internet. Most often used on a telephone line. PRI (Primary Rate Interface). One of the two ISDN access methods. 23 of 64 Kbps B channels and 1 64 Kbps D channel constitute a PRI. Protocol A set of rules by following which two parties can communicate. The TCP/IP protocol suite is the basis of todays Internet. PSTN (Public Switched Telephone Network). The set of all the traditional telephone lines and all the infrastructure that comes with it. Python Interpreted programming language, sometimes offered by hosts for server-side scripting. Here is the Python home page. RAID Redundant Array of Independent (or Inexpensive) Disks. Type of disk, often used on servers, where several physical disks are combined into an array for better speed and fault tolerance. Level 0 implements data striping where file blocks are written to separate drives. Does not provide fault tolerance, because failure of one drive will result in data loss. Level 1 implements data mirroring. Data is duplicated on two drives either through software or hardware. Provides faster read performance than a single drive. Level 2 - not used in practice. Data is split at bit level at written to multiple drives. Level 3 - requires at least 3 drives. Data block is striped at byte level across drives and error correction codes (parity info) is recorder on another drive. Provides fault tolerance but slower writing performance. Level 4 - Similar to Level 3 but provides faster performance because it uses blocks for striping. Level 5 - Similar to Level 4 but improves performance but also striping parity info across multiple drives. Level 6 - Similar to Level 5 but also uses second parity scheme for better fault tolerance. Level 7 - Proprietary RAID design by Storage Computer Corporation. Faster than other levels because it uses multiple levels of cache and asynchronous I/O transfers. In addition multiple RAID levels can be combined to improve performance or reliability. Raw Logs Raw access data updated in real-time that can be downloaded and used by any statistics program. Typically each line show the user's IP, date and time of the access, what kind of request was done, which document was requested, HTTP status code, bytes transferred, referrer, and user agent info. If a host doesn't have statistics, you'll need access to raw logs to identify who your site's visitors are. Analyzing raw logs can also provide more detailed look at site accesses than stats. Reseller Resellers are usually smaller companies that still try to build their customers base. They don't own the server with user accounts but can perform most administrative functions. RJ-11 A standard connector that is used to connect to the telephone line. free web site, Free Web Hosting. free domain name free web hosting
Should I simply choose a cheapest plan? We wouldn't recommend choosing any plan below $5 per month if you expect to get a reasonable level of technical support. Will the bandwidth prices fall soon? Bandwidth prices are gradually decreasing. It is now possible for hosts to pay less than $1 per GB of transfer in chunks of 100 GB. New companies like Cogent Communications are building fiber-optic networks and promise 100 Mbps of bandwidth across their network to multi-tenant office buildings in major cities for $1,000/month. The question is whether they will be able to peer with established telecoms without raising prices. How can hosts make money offering high transfer limits for low prices? They count on the fact that the majority of sites won't use anywhere close to the full amount of transfer available. This overselling is usually a valid assumption and it is done in many other businesses (ex. airlines). free domain name free web hosting. Free Web Hosting
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