THE OSI MODEL It stands for Open Systems Interconnection. Think of it as a universal rulebook for computers. It explains how data travels across the world from one screen to another. It has seven layers .We start at the top with what you see, and go down to the actual wires. Let’s look at how a simple text message travels! Layer 7 is the Application Layer. This is the layer you can actually see and touch. It is your web browser, your email app, or your games. When you type a message and hit send, Layer 7 kicks off the journey. Layer 6 is the Presentation Layer. It translates data so the computer can understand it. It handles three main things:"Translation: Turning your words into data. Encryption: Scrambling your text so hackers cannot read it. Compression: Shrinking the file size so it sends faster. Layer 5 is the Session Layer. This layer opens, manages, and closes the talk between two devices. Think of it like a phone call. It rings the other phone, keeps the line open while ...
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Year 9 Assignment
Copy and answer the question in your homework book Your school is organizing a Technology Awareness Day. The headteacher has tasked the computing club with overseeing the successful organization of the programme. The club's role includes planning, communication, creating publicity materials and explaining key technology concepts to visitors. (a) As a member of the computing club, your team needs to share project files between three computers in different classrooms for visitors to view. (i) Name the type of computer network that would be suitable for the purpose................................................................................................................. (ii) List two hardware components required to set up this network. (a) ............................................................................................................... (b) ............................................................................................................... (b) The ...
Year five assignment
Watch the video below, then click the link to answer the questions Click on the link to answer the questions. click here
Year 8 Assignment
Section A: Objectives Choose the correct answer 1. The base of the hexadecimal number system is... A. 2 B. 8 C. 10 D. 16 2. In hexadecimal, the letter E represents the decimal number... A. 11 B. 12 C. 14 D. 15 3. Convert (25)₁₀ to hexadecimal. A. 19 B. 1A C. 21 D. 31 4. Convert (1A)₁₆ to decimal. A. 16 B. 24 C. 26 D. 32 5. Which of these is NOT a valid hexadecimal digit? A. 7 B. B C. G D. F 6. The hexadecimal number (100)₁₆ is equal to which decimal number? A. 16 B. 100 C. 256 D. 4096 7. Convert (1111)₂ to hexadecimal. A. E B. F C. 15 D. 1E 8. Com...
