BCA Semester 5 – Computer Networking () Questions & Answers | Past TU Exam Papers

Question 1

Write short notes on (Any Two):\ a) DNS\ b) Public Key Cryptography\ c) VPN

Marks: 5

Year: 2020 Final TU

a) DNS (Domain Name System) Definition: DNS is a hierarchical system that translates human-readable domain names (like www.example.com) into IP addresses required for network communication. Key Po

Question 2

What is digital signature and how it works?

Marks: 5

Year: 2022 Final TU

1. Digital Signature Definition: A digital signature is a cryptographic technique used to verify the authenticity and integrity of a digital message or document. - Provides authentication, integri

Question 3

Why do we need DNS when we can directly use an IP address? Explain the process to resolve the domain www.tribhuvan-university.edu.np?

Marks: 5

Year: 2022 Final TU

1. Why DNS is Needed Reasons: 1. Human-Friendly Names: - Domain names like www.tribhuvan-university.edu.np are easier to remember than numeric IP addresses like 103.69.124.1. 2. Dynamic IP

Question 4

What is DNS? How it works?

Marks: 5

Year: 2021 Final TU

1. DNS (Domain Name System) Definition: DNS is a hierarchical and distributed system that translates human-readable domain names (e.g., www.example.com) into IP addresses (e.g., 192.168.1.1) require

Question 5

What is cryptography? Explain the principles of cryptography.

Marks: 5

Year: 2021 Final TU

1. Cryptography Definition: Cryptography is the science of securing information by transforming it into an unreadable format to prevent unauthorized access. - Ensures confidentiality, integrity, a

Question 6

Write short notes on (any two): a) RSA b) CRC c) Firewall

Marks: 5

Year: 2024 Final TU

1. RSA (Rivest-Shamir-Adleman) Definition: RSA is an asymmetric cryptographic algorithm used for secure data transmission. - Uses public key for encryption and private key for decryption. Key Po