DCET IT Skills Complete 20-Mark Study Kit

20 Marks Target

Unit	Topic Domain	Key Concepts Tested by KEA	Expected Weightage
Unit 1	Web Architecture & Protocols	Client-Server model, HTTP/HTTPS, Web browsers, Rendering engines, Port numbers	4–5 Marks
Unit 2	Internet, URLs & DNS	URL anatomy, Domain hierarchy, DNS resolution, IPv4 vs IPv6 addressing	4–5 Marks
Unit 3	Webpage Engineering (HTML/CSS/JS)	HTML5 semantic tags, CSS box model, Static vs Dynamic pages, DOM fundamentals	4–5 Marks
Unit 4	Networking & Server Daemons	Web servers (Nginx/Apache), App servers, Database servers, TCP vs UDP	3–4 Marks
Unit 5	Cyber Security & Web Safety	Symmetric vs Asymmetric cryptography, Firewalls, Cookies, Phishing, Malware types	3–4 Marks

High-Yield Vocabulary

Blink: Open-source browser rendering engine powering Chrome and Edge.
V8: High-performance JavaScript and WebAssembly engine built by Google.
Gecko: Mozilla's independent browser engine powering Firefox.
DNS Root Server: Top of DNS hierarchy; 13 logical root server clusters globally.
DHCP: Dynamic Host Configuration Protocol; automatically assigns IP addresses (Ports 67/68).
ICMP: Internet Control Message Protocol; used by ping and traceroute for diagnostics.

NAT: Network Address Translation; maps private IPs to public routable IP.
Symmetric Encryption: Uses single shared secret key (AES, DES).
Asymmetric Encryption: Uses Public and Private key pair (RSA, ECC).
Cookie: Plaintext client-side storage file managing session state.
Reverse Proxy: Gateway sitting before web servers for load balancing (Nginx).
Subnet Mask: 32-bit number separating Network ID from Host ID.

Topper Timetable

Phase	Days	Daily Focus & Strategy	Target Milestone
Phase 1: Foundation	Days 1 – 10	Complete Unit 1 & Unit 2 concepts. Memorize all Port numbers, browser engines, and URL anatomy.	Solve 100 topic-wise MCQs; 100% accuracy on ports.
Phase 2: Core Engineering	Days 11 – 20	Master Unit 3 & Unit 4. Practice Static vs Dynamic questions and Server type classifications.	Score 18+ in unit-wise diagnostic practice tests.
Phase 3: Security & Traps	Days 21 – 25	Review Unit 5 Cyber Security + Exam Trap Buster Sheet. Master option elimination techniques.	Eliminate 2 wrong options in under 10 seconds.
Phase 4: Full CBT Simulations	Days 26 – 30	Take 3 Full-Length 100-mark DCET CBT Mocks under strict exam hall conditions.	Lock in 20/20 Marks in IT Skills! Rank < 50!

Golden Formulas

SSH(22) • Telnet(23) • SMTP(25) • DNS(53) • HTTP(80) • POP3(110) • HTTPS(443). Remember: If secure, check 22 or 443!

IPv4 = 32 bits = 4 bytes. IPv6 = 128 bits = 16 bytes. MAC = 48 bits = 6 bytes. Question on bits? Directly calculate!

2xx = Success • 3xx = Redirect • 4xx = Client Error (User made mistake) • 5xx = Server Error (Website server crashed).

HTML builds the skeleton • CSS paints the skin • JavaScript commands the muscles. Never mix their responsibilities!

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