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Home›Explore Exams›NEB +2› Grade 12›Subjects›Computer Science (Grade 12)

GyanMul Prep · NEB +2 · Grade 12

Computer Science (Grade 12)

Everything on these tabs is Computer Science (Grade 12) only, within NEB +2 Grade 12.

Grade 12 subjects

Chapters Questions Practice Quizzes Past Papers Institution Papers Mock Tests Solved Questions Progress Gurubaa

Chapters›Network Protocols and Security

9

Chapter 9 of 26 · Computer Science (Grade 12)

Network Protocols and Security

8 topics
Board exam — Data Communication and Networking, 9 marks across 5 chapters

The agreed rules that make the traffic mean something, and the measures that keep it private — including why HTTPS is not HTTP with a letter added.

Topics

What the syllabus defines for this chapter

1Protocol: definition and purpose
2HTTP and HTTPS; secure communication over a network
3FTP, SMTP, POP3 and IMAP
4TCP and UDP; connection-oriented against connectionless
5Telnet, SSH and DHCP
6Network security threats: virus, worm, trojan and phishing
7Firewall, antivirus and access control
8Cryptography in outline: encryption, decryption and digital signature

Previous chapterNetwork Models, Devices and IP Addressing Next chapterClient-side and Server-side Scripting