Category Archives: Notes

Notes for A+ Exams

WINDOWS: HOW TO RECOVER YOUR DATA IF YOUR USER PROFILE HAS DISAPPEARED

WINDOWS: HOW TO RECOVER YOUR DATA IF YOUR USER PROFILE HAS DISAPPEARED WINDOWS XP – login as an administrator – unhide files and folders Open Folder Options in Control Panel Click Start, and then click Control Panel Click Appearance and … Continue reading

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SQL INJECTION

THIS TUTORIAL IS FOR EDUCATIONAL PURPOSES ONLY… SQL INJECTION SQL injection is a code injection technique, used to attack data-driven applications, in which malicious SQL statements are inserted into an entry field for execution (e.g. to dump the database contents … Continue reading

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WHAT IS RESISTANCE?

The electrical resistance of an electrical element is the opposition to the passage of an electric current through that element; the inverse quantity is electrical conductance, the ease at which an electric current passes. The SI unit of electrical resistance … Continue reading

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HOW TO ADD UBUNTU/LINUX TO ACTIVE DIRECTORY

HOW TO ADD UBUNTU/LINUX TO ACTIVE DIRECTORY HOW TO ADD UBUNTU DESKTOP TO ACTIVE DIRECTORY I HOW TO ADD UBUNTU DESKTOP TO ACTIVE DIRECTORY II (LIKEWISE) HOW TO ADD UBUNTU DESKTOP TO ACTIVE DIRECTORY III (WINDBIND) HOW TO ADD UBUNTU … Continue reading

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LINUX COMMAND LINE GUIDE

BASIC LINUX COMMAND LINE GUIDE LINUX UTILITIES NANO EDITOR COMMAND LIST VI EDITOR COMMAND LIST LINUX LOG FILE LOCATIONS AND TYPES HOW TO CLONE HDD WITH DD LINUX LOG TUTORIAL System Info LINUX SYSTEM MAINTENANCE TUTORIAL LINUX DRIVER TUTORIAL UBUNTU … Continue reading

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THREE WAY HANDSHAKE EXAMPLE

=================== Definitions: =================== -Physical layer The physical hardware and cables connecting everything and hubs and related specification data space. -Data link layer this contains the switch and ethernet frame. This layer contains level focuses on mac addresses for various network … Continue reading

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