Computer Hardware Basic Study Guide

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1
It's a software that's used by a consumer after signing a EULA agreement.
Application Software
2
It's a method in which similar attributes between two items are identified.
Abstraction
3
It's the physical part that makes up a computer or mechanical device.
Hardware
4
It's the digital program or set of programs that are coded on to a computer or device.
Software
5
Bit is a short form for...
Binary Digit
6
is used to represent the smallest measure of data as 0s and 1s. It's used to describe data transmission speeds.
Bit
7
It's a term used to describe storage space and is made up of 8 bits.
Byte
8
RFID stands for...
radio Frequency Identification
9
Devices equipped with it release radio waves which can be used to track down and/or identify the device.
RFID
10
CPU stands for...
Central Processing Unit
11
in charge of controlling whatever functions that are carried out on the computer. It takes, deciphers, carries out, and stores the commands it receives.
Microprocessor (CPU)
12
CPUs are measured in...
GHz
13
GHz stands for...
Gigahertz
14
CPU clock speeds are measured in...
Hz
15
Hz stands for..
Hertz
16
It's a device that allows you to connect to the internet.
Modem
17
It's a device that forwards the internet connection from the modem to the devices connected to it.
Router
18
BIOS stands for...
Basic Input Output System
19
acts as a computer's startup commands.
BIOS
20
It's storage or data that lasts until the device is turned off.
Volatile
21
It's storage or data that's permanently stored.
Nonvolatile
22
It's a processor that contains 1 core per processor.
Dual Core Processor
23
It's a processor that contains 2 cores per processor.
Quad Core Processor
24
RAM stands for...
Random Access Memory
25
is used to act as temporary memory for a computer while it's powered on. It's also upgradable.
RAM
26
2 Types of RAM are...
DRAM & SRAM
27
DRAM stands for...
Dynamic RAM
28
SRAM stands for...
Static RAM
29
needs to be recharged thousands of times per second to work; cheaper than SRAM
DRAM
30
doesn't need to be refreshed and is faster; more expensive than DRAM.
SRAM
31
ROM stands for...
Read-Only Memory
32
is responsible for holding a computer's BIOS. It's non-volatile and can't be changed.
ROM
33
It's a type of memory that's often used by the CPU and is faster than RAM but holds less storage than RAM.
- Can't be upgraded
Cache
34
Where is the cache located?
Near or as a part of the CPU
35
It's a type of memory that's actively used by CPU to hold data temporarily.
Primary Storage
36
Example of Primary Storage
RAM, cache
37
It's a type of memory that's used by the CPU when the data it's looking for isn't found in the primary storage.
- Stores data permanently.
Secondary Storage
38
Examples of Secondary Storage
HDDs, floppy disks, optical drives
39
USB stands for...
Universal Serial Bus
40
is a common port that's found in most devices today
USB
41
It's when you gain data at random points in time.
Random access
42
It's when the only way to gain data is by going through a sequential route of data points. It's the reverse of random access.
Sequential access
43
refer to the peripheral devices that can be connected to a computer.
I/O devices
44
I/O
Input/Output Devices
45
Examples of Input Devices
Mouse, Keyboard, Controller, Scanner, CD-ROM Drive
46
Examples of Output Devices
Monitor, Printer
47
They're external or internal devices used to connect to a computer.
Peripherals
48
They act as the link between physical devices or the programs and the computer's OS.
Device Drivers
49
It's a set of code that duplicates itself and is used to actively disrupt its processes or take sensitive information from a computer system.
Virus
50
It's a set of code that duplicates itself and is used to harm or disrupt the computer system.
Worm
51
It's a set of code that hides itself as a legitimate program while carrying out whatever task it was programmed to do.
Trojan Horse
52
OS stands for...
Operating System
53
a set of programs made to act as the connection between the physical components and software on a device.
OS
54
What is the difference between ROM and RAM?
ROM & RAM stand for different things. ROM can't be rewritten or upgraded and is nonvolatile, which is the opposite of RAM.
55
How does RAM affect a computer's performance?
The more RAM you have, the more you'll be able to multitask.
56
How many Bytes in a Gigabyte? in a Kilobyte?
Gigabyte = 2^30 bytes
Kilobyte = 2^10 bytes
57
List from smallest to largest: kilobyte, megabyte, byte, bit, terabyte, gigabyte.
bit, byte, kilobyte, megabyte, gigabyte, terabyte
58
Alice has 600 MB of data. Bob has 2000 MB of data. Will it all fit on Alice's 4 GB thumb drive? (from Stanford article)
600 MB + 2000 MB = 2600 MB
2600 MB * 0.001 = 2.6 GB
Yes, it can fit.
59
Alice has 200 small images, each of which is 600 KB. How much space do they take up overall in MB?
200 * 600 KB = 120000 * 0.001 = 120 MB
60
How is data represented in a computer?
bits
61
What is the job of the Operating System?
To control and manage memory, programs, peripherals and any files on the computer
62
Examples of 3 Operating Systems
Windows 11, Android, iOS
63
When we refer to an operating system, are we referring to hardware or software?
A Software
64
List from most general (most abstract) to most specific (least abstract): USB flash drive, byte, secondary storage.
byte, Secondary storage, USB flash drive
65
List from most general (most abstract) to most specific (least abstract): Microsoft Office, Software, Excel.
Software, Microsoft Office, Excel
66
Look at a few Technical Specifications listed below. Explain as much as you can about each of them.
Apple M1 Pro chip
CPU made by Apple
67
Look at a few Technical Specifications listed below. Explain as much as you can about each of them.
200GB/s memory bandwidth
transfer rate of data to and from the memory
68
Look at a few Technical Specifications listed below. Explain as much as you can about each of them.
2.6GHz 6-core 9th-generation Intel Core i7 processor, Turbo Boost up to 4.5GHz
Clock speed, max CPU speed, and edition number of an intel processor
69
Look at a few Technical Specifications listed below. Explain as much as you can about each of them.
16GB unified memory
16 GB of RAM or volatile storage
70
Look at a few Technical Specifications listed below. Explain as much as you can about each of them.
512GB SSD storage
512 GB of Solid State Drive stoage
71
Look at a few Technical Specifications listed below. Explain as much as you can about each of them.
Retina display
High definition display made by Apple
72
Look at a few Technical Specifications listed below. Explain as much as you can about each of them.
Thunderbolt 4 ports
Port used to transmit data with a thunderbolt adapter
73
Look at a few Technical Specifications listed below. Explain as much as you can about each of them.
Touch ID
fingerprint identification
74
Look at a few Technical Specifications listed below. Explain as much as you can about each of them.
24MB Cache, up to 5.0 GHz
24 MB of volatile memory with a speed of 5 GHz
75
How are the modem and router connected?
A modem connects your wifi to the internet while the router forwards that internet connection to the devices connected to the wifi.
76
ISP stands for...
Internet Service Provider
77
in charge of providing you an internet connection from your location in return for your payment.
ISP
78
It's the worldwide web of digital data points and addresses that are used to broadcast and create data on a daily basis.
Internet
79
What is RAM measured in?
GB
80
How much RAM is considered reasonable?
16 - 64 GB
81
What is hard drive capacity measured in?
GB or TB
82
How much hard drive capacity is considered reasonable?
512 GB - 1 TB
83
What is processor speed measured in?
In GHz
84
How much processor speed is considered reasonable?
2 GHz - 3 GHz
85
Differences between an SSD & HDD
SSDs are faster, quieter, more energy efficient, has no moving parts, and is more expensive than HDDs.
86
data that's generated with existing data.
Metadata
87
List and briefly describe 5 ways how websites know who you are. (BTB)
Social Media, GPS, Online website tracking and purchases, Bank history
88
What was Edward Snowden's claim to fame (BTB)?
He revealed the U.S.'s massive surveillance over the entire country and it's citizens.
89
EDR stands for...
event data recorder
90
used to record all data involving cars in the event of a car crash or accident.
EDR
91
How might EDR affect your privacy?
The data can expose and record your driving habits and history without your permission or knowledge
92
What is meant by "There are two Big Brothers that often work together." (BTB)
Government and industries in charge of monitoring, analyzing, and presenting information about people and what they do
93
- Made in 1974; stated that no official agency was allowed to give away info regarding a person without their permission
- If they do have their information given away, they can sue them in civil court.
Privacy Act
94
TIA stands for...
Total Information Awareness
95
- Was made as a project to gather as much data and metadata of everyone after the events of 9/11 that could have been prevented if the info they had had been connected
TIA
96
to remove all identifying information from a piece of data.
deidentified
97
List and briefly describe 5 ways how websites know who you are. (BTB)
Account logins
Leftover cookies
Record of your IP address
Information from social media
Data collected about you through websites
98
text files that hold information that can be used for whenever you go to visit a website again
Cookies
99
What does your FACEBOOK history tell you about where you have been or what you have searched for/watched online?
Facebook history can show posts of you & the people you know and their locations through geotagging. Not to mention, data about what you search to determine what you might be interested in. While you may be given a brief warning of the data collection, it's often done inconspicously and without thought for privacy.
100
visual artifact
are anomalies apparent during visual representation as in digital graphics and other forms of imagery
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