ITF+ Certification Cram Notes

1. IT Concepts and Terminology:

1.5 Compare and contrast common units of measure.

Storage units

When it comes to measuring storage capacity, there are several units of measure that are commonly used. These units range in size from small to large, and each one represents a different amount of storage capacity. Here's a comparison of some of the most commonly used storage units:

Bit: The smallest unit of measure for storage, representing a single binary digit (either 0 or 1).

Byte: A group of eight bits. This is the basic unit of measure for most computer storage.

Kilobyte (KB): One thousand bytes. This is a relatively small amount of storage capacity and is typically used to measure small files or pieces of data.

Megabyte (MB): One million bytes. This is a larger unit of measure and is typically used to measure larger files or collections of data.

Gigabyte (GB): One billion bytes. This is a very large unit of measure and is typically used to measure large collections of files, such as music or video libraries.

Terabyte (TB): One trillion bytes. This is an even larger unit of measure and is typically used to measure very large collections of data, such as scientific or research data.

Petabyte (PB): One quadrillion bytes. This is an extremely large unit of measure and is typically used to measure data on a massive scale, such as data centers or supercomputers.

In summary, each storage unit represents a different amount of storage capacity, with smaller units used to measure small files and data, and larger units used to measure larger collections of files and data. As technology continues to evolve, we may see even larger units of measure being used to measure storage capacity.

Throughput unit

When it comes to measuring data transfer rates, the following units of measure are commonly used:

bps (bits per second): This is the smallest unit of measure for throughput, representing the number of bits that can be transferred in a single second.

Kbps (kilobits per second): One thousand bits per second. This is a relatively small unit of measure and is typically used to measure slower internet connections or file transfer rates.

Mbps (megabits per second): One million bits per second. This is a larger unit of measure and is typically used to measure faster internet connections or data transfer rates.

Gbps (gigabits per second): One billion bits per second. This is a very large unit of measure and is typically used to measure extremely fast internet connections or data transfer rates.

Tbps (terabits per second): One trillion bits per second. This is an extremely large unit of measure and is typically used to measure data transfer rates on a massive scale, such as in data centers or supercomputers.

In summary, each throughput unit represents a different amount of data transfer rate, with smaller units used to measure slower internet connections or file transfer rates, and larger units used to measure faster internet connections or data transfer rates.

Processing speed

When it comes to measuring processing speed, the following units of measure are commonly used:

MHz (megahertz): This is a unit of measure for the clock speed of a processor, representing the number of cycles per second that the processor can execute. One megahertz represents one million cycles per second.

GHz (gigahertz): One billion cycles per second. This is a larger unit of measure and is typically used to measure faster processors.

In summary, each processing speed unit represents a different clock speed of a processor, with smaller units used to measure slower processors and larger units used to measure faster processors. As technology continues to evolve, we may see even larger units of measure being used to measure processing speed.