Computer Networks

OSI model, TCP/IP, routing, protocols, and network security basics.

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QUESTION NO 01

UDP is preferred when?

Answer: Low latency matters more than reliability

UDP is lightweight; apps handle reliability if needed (e.g., streaming, DNS).

Shahzad Mahota @shahzad-mahota

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QUESTION NO 02

DNS translates?

Answer: Domain names to IP addresses

DNS resolves human-readable names to IP addresses.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 03

MAC address is used at which OSI layer?

Answer: Data Link (Layer 2)

Hardware (MAC) addresses operate at the Data Link layer.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 04

TCP is?

Answer: Connection-oriented and reliable

TCP establishes a connection and provides reliable, ordered delivery.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 05

IP address identifies a?

Answer: Network host/interface

An IP address identifies a device (or interface) on a network.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 06

A router forwards packets based mainly on?

Answer: IP addresses / routing table

Routers use destination IP and routing tables to forward packets.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 07

Latency measures?

Answer: Delay for data to travel

Network latency is the time delay for a packet/signal to go from source to destination.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 08

OSI model has how many layers?

Answer: 7

The OSI reference model defines 7 layers from Physical to Application.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 09

HTTP typically uses which port?

Answer: 80

Default HTTP port is 80; HTTPS uses 443.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 10

HTTPS adds security using?

Answer: TLS/SSL encryption

HTTPS is HTTP over TLS, encrypting the connection.

Shahzad Mahota @shahzad-mahota

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Computer Networks

More topics in Computer Science

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AJAX

Angular JS

ASP .NET

Bootstrap

C

C#

C++

CodeIgniter

Computer Networks

CSS

Data Structures & Algorithms

Databases

Go Lang

HTML

Java

JavaScript

JQuery

Laravel

Node JS

Operating Systems

PHP

Python

React JS

React Native

Ruby on Rails

Software Engineering

Tailwind CSS

Vue JS

Explore

UDP is preferred when?

Explanation

DNS translates?

Explanation

MAC address is used at which OSI layer?

Explanation

TCP is?

Explanation

IP address identifies a?

Explanation

A router forwards packets based mainly on?

Explanation

Latency measures?

Explanation

OSI model has how many layers?

Explanation

HTTP typically uses which port?

Explanation

HTTPS adds security using?

Explanation