Security and Network Fundamentals

Security and Network Fundamentals You can use a number of methods to encrypt your data- HASHING – commonly known as a one way cryptographic algorithm, hashing uses complex mathematical formulae to translate data into numerical values. A hashed numerical value can’t be translated back to its original data form. MD5 is a cryptographic hash function … Continue reading →

Processors

Processors – Intel  Pentium II – single edge connector cartridge SECC – fit into the mother board via slot 1. Includes MMX technology in the SECC, 64-BIT data bus, and 32-BIT wide address bus. Processor speeds ranged from 233 MHz to 450 MHz, voltage between 2 and 2.8v.  Pentium III – change from … Continue reading →

Motherboard Form Factors

Form Factors  ATX – Advanced Technology Extended – standard form factor for most mother boards, the processor and memory sit at right angles to the expansion slots. They align with the power supply fan. ATX motherboards measure 12” by 9.6”.  BTX – balanced technology extended – invented by Intel as a replacement for … Continue reading →

Expansion Bus and Disk Interfaces

Expansion Bus and Disk Interfaces An expansion bus enables the CPU to communicate with any device plugged into a slot via the Southbridge chipset. Two Different expansion buses – Daughter boards and Riser Cards A Daughter Board is a circuit board that extends the mother boards capabilities A Riser Card acts as a space saving … Continue reading →

CPU Technology (A+ certification)

CPU Technology CPU Cache – special type of memory that the CPU uses to store instructions while it works with them. Three Different Types 1. Level 1 (L1) CACHE is built into the CPU and is where the data is stored as it waits to enter the CPU. 2. Level 2 (L2) CACHE is where … Continue reading →