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Title: Information Technology and Computer Science
Description: These notes cover key concepts, theories, and practical applications in Computer Science and Information Technology. Topics include programming fundamentals, data structures, algorithms, computer architecture, operating systems, networking, databases, cybersecurity, software engineering, web technologies, and emerging trends such as artificial intelligence and cloud computing. The aim is to provide a structured and comprehensive reference to support both academic study and practical problem-solving in the IT field.
Description: These notes cover key concepts, theories, and practical applications in Computer Science and Information Technology. Topics include programming fundamentals, data structures, algorithms, computer architecture, operating systems, networking, databases, cybersecurity, software engineering, web technologies, and emerging trends such as artificial intelligence and cloud computing. The aim is to provide a structured and comprehensive reference to support both academic study and practical problem-solving in the IT field.
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Information Technology and Computer Science
subject:IT AND CS FUNDEMENTALS
1
...
"
1
Key Subjects:⦁
2
...
"
Important IT Components: ⦁
Hardware (including CPU, RAM, storage, and peripherals)
⦁
Software (OS, programs, and utilities)
⦁
Networking (Internet, Cloud, LAN, WAN)
2
⦁
Databases (SQL and NoSQL)
⦁
Cybersecurity, including encryption, ethical hacking, and firewalls ---
3
...
Software
B
...
The physical parts of a computer (like the CPU, GPU, and hard drive)
ii
...
OS (operating systems)
3
An Operating System's Features: ⦁
Manages resources for software and hardware Provides a GUI or CLI user interface
⦁
Controls how files are managed
⦁
Manages allocation of memory
⦁
Ensures access control and security
Some OS examples: 1
...
Linux (secure, open-source)
3
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Algorithms, Programming, and More What exactly is a programing
language?
Common Programming Languages: -
4
A
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Java (platform-independent, business applications)
C
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JavaScript (for front-end and back-end web development)
What exactly is an algorithm?
a methodical approach to problem-solving
Examples:
( Bubble Sorting and Binary Search )
6
...
Linear Stacks, Linked Lists,
b
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Non-Linear
d
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SQL and databases
Types of databases: ⦁
Structured data (such as MySQL and PostgreSQL
⦁
Relational (SQL)
⦁
Unstructured data (e
...
, MongoDB, Redis)
6
⦁
Non-Relational (NoSQL)
⦁
Fundamental SQL Commands
⦁
sql
CHOOSE FROM Employees;
i
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UPDATE Customers: SET email to "new@email
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REMOVE FROM Products IF THE STOCK IS NULL
8
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Small area (office, for example)
B
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WAN (Wide Area Network) –
D
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City-wide MAN (Metropolitan Area Network)
Important Protocols: -
⦁
"HTTP/HTTPS"
7
⦁
surfing the web
⦁
File transfer via FTP
⦁
Internet communication via TCP/IP
9
...
Malware (Ransomware, viruses)
2
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DDoS Attacks (server overloading)
Measures of Protection: i
...
Enable "two-factor authentication" (also known as "2FA")
iii
...
Technologies of the Future:I
...
II
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Decentralized, secure transactions like Bitcoin
IV
...
V
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Remote processing and storage (such as AWS and Azure) ---
CONCLUSION:8
The Conclusion Modern technology is based on computer science and information technology
...
THE END
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Title: Information Technology and Computer Science
Description: These notes cover key concepts, theories, and practical applications in Computer Science and Information Technology. Topics include programming fundamentals, data structures, algorithms, computer architecture, operating systems, networking, databases, cybersecurity, software engineering, web technologies, and emerging trends such as artificial intelligence and cloud computing. The aim is to provide a structured and comprehensive reference to support both academic study and practical problem-solving in the IT field.
Description: These notes cover key concepts, theories, and practical applications in Computer Science and Information Technology. Topics include programming fundamentals, data structures, algorithms, computer architecture, operating systems, networking, databases, cybersecurity, software engineering, web technologies, and emerging trends such as artificial intelligence and cloud computing. The aim is to provide a structured and comprehensive reference to support both academic study and practical problem-solving in the IT field.