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Computer Bits & Bytes


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8
bits in a byte
4
Activities associated with resource management include all of the following EXCEPT:
1024
Bytes in a Kilobytes
BIOS
Basic Input Output System which is the first piece of software loaded when a computer turns on.The BIOS conducts basic system tests and locates a "bootable" drive.
PSU
A power supply is a hardware component that supplies power to an electrical device. It receives power from an electrical outlet and converts the current from AC (alternating current) to DC (direct current), which is what the computer requires.
RAM
A form of Volatile Memory - A random-access device allows stored data to be accessed directly in any random order.
ROM
A class of storage medium used in computers and other electronic devices. Data stored in this cannot be modified, or can be modified only slowly or with difficulty, so it is mainly used to distri…
CPU
acronym for central processing unit, where all the PCs calculations take place
SATA
Serial Advanced Technology Attachment.
PCI-E
PCI - Express is the port on your motherboard where you plug expansion cards such as sound cards and video cards
solid state HDD
This is long term storage hard drive that stores files.
Who was Gordon Moore?
Gordon Moore is co-founder and Chairman of Intel Corporation and the author of Moore's Law.
thermal grease
increases the thermal conductivity by filling microscopic air-gaps present due to the imperfectly flat and smooth surfaces of the heat sink and the CPU.
boot sequence
The order of drives that a system's BIOS follows when looking for the operating system (OS) to boot after the computer has performed POST. For example, the BIOS may be instructed to first loo…
The Internet
cloud represent in a network diagram
network protocol
Communication protocols are agreed sets of rules and procedures for computers to exchange information.
IPv4 has 4.2 billion address.
What is IP version 4 (IPV4) and IP version 6 (IPV6) what is the difference
Switch and a Hub
A switch is used to network multiple computers together.
Shared Resources
benefits of networking computing
IP conflict on a network
2 nodes have the same IP address. One or both computers will not be able to access the network.
What does TCP protocol do.
Breaks files into packets to be sent across the internet or a network. Each packet contains:
What does IP protocol do.
Once a file has been chopped into packets, the IP protocol delivers each packet to its destination.
127.0.0.1 to 127.255.255.255
Loopback IP address range
Ping is a computer network administration utility
What does the command Ping do on a windows machine.
What does the command ipconfig do on a windows machine.
Displays all current TCP/IP network configuration values and refreshes Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS) settings
What is Moore's Law.
The number of transistors in a integrated circuit will double approximately every 2 years
Hard Disk Drive
is where all the data in a computer is stored when not in use by the processor. Unlike memory, data stored on a HDD remains intact when the computer is turned off. It i…
Computer fail is common!
Why is it important to back up files in a business?
What is cloud storage?
Files are stored on server such as Google and Drop box over the internet.
Advantage of cloud storage ?
Files are accessible from anywhere with an internet connection
Security issues,
Cloud Storage - Disadvantages
All data
Full back up - Data backed up
Incremental back up - Data backed up
Only the things that have not been backed up since last back up (full or incremental)
Longer
Full back up - Back up time
Shorter
Full back up - restore time
More
Full back up - Storage Space
Less
Incremental back up - Storage Space