Facts About Computer and Programming

• Most applications in a data warehouse consists of transactions.
• A Transaction consist of one read and write operation.
• For security purpose we use proxy server along with firewall.
• Rollback command undo all changes of a transaction.
• Applet is a dynamic document application program.
• The speed of a Super Computer is mainly measured in FLOPS.
• RAID 3 is a single parity drive depends on disk controller for finding out which disk has failed.
• Propagation time is the time which takes by a signal to transmit from one point of a medium to other end.
• Sliding window protocol is used in data link layer to store the information about frame sequences and respective acknowledgement.
• archie is a program to find files in ftp site.
• website to get kernel source code http://lxr.free-electrons.com/source/
• The linux kernel mailing list http://www.tux.org/lkml/#s15-3
• static library has extension .a and dynamic library has .so.
• files which shown in colors in linux require permissions.
• ./ is the relative path and starts with / is called absolute path.