TCO
Abbreviation of Total Cost of Ownership, a very popular buzzword representing how much it actually costs to own a PC. The TCO includes:
Original cost of the computer and software
Hardware and software upgrades
Maintenance
Technical support
Training
Most estimates place the TCO at about 3 to 4 times the actual purchase cost of the PC. The TCO has become a rallying cry for companies supporting network computers. They claim that not only are network computers less expensive to purchase, but the TCO is also much less because network computers can be centrally administered and upgraded. Backers of conventional PCs, especially Microsoft and Intel, have countered with Zero Administration for Windows (ZAW), which they claim will also significantly reduce TCO.
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- Transmission Control Protocol (TCP)
Abbreviation of Transmission Control Protocol, and pronounced as separate letters. TCP is one of the main protocols in TCP/IP networks. Whereas the IP protocol deals only with packets, TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and also guarantees that packets will be delivered in […]
- TCP/IP
(pronounced as separate letters) Short for Transmission Control Protocol/Internet Protocol, TCP/IP is the suite of communications protocols used to connect hosts on the Internet. TCP/IP uses several protocols, the two main ones being TCP and IP. TCP/IP is built into the UNIX operating system and is used by the Internet, making it the de facto […]
- TCP SYN attack
A sender transmits a volume of connections that cannot be completed. This causes the connection queues to fill up, thereby denying service to legitimate TCP users. A TCP SYN attack (also called SYN attack) is a common type of Denial of Service attack.
- TCP Wrapper
A computer program that provides firewall services to UNIX users on a network by monitoring incoming packets to determine if the external device is authorized to have access. TCP Wrapper monitors and filters incoming requests for the SYSTAT, FINGER, FTP, TELNET, RLOGIN, RSH, EXEC, TFTP, TALK, and other network services.
- TCP segmentation offload
Abbreviated as TSO, TCP segmentation offload is used to reduce the CPU overhead of TCP/IP on fast networks. TSO breaks down large groups of data sent over a network into smaller segments that pass through all the network elements between the source and destination. This type of offload relies on the network interface controller (NIC) […]