Class VIII: Networking And E-commerce

Explanation
The correct answer is NIC, which stands for Network Interface Card. A NIC is a hardware component that connects a computer to a network. It allows the computer to send and receive data over the network, enabling communication between the computer and other devices on the network. PIC (Peripheral Interface Card) and NOC (Network Operations Center) are not directly related to connecting a computer to a network, making them incorrect options.

Explanation
Infomania is a condition caused by continuously responding to emails and SMS messages. This excessive engagement with digital communication leads to a constant need for information and a difficulty in focusing on tasks. It can result in decreased productivity, increased stress levels, and a feeling of being overwhelmed. The term "Infomania" accurately describes this phenomenon and its negative effects on individuals who are constantly connected and responsive to digital communication.

Explanation
E-Learning refers to the process of acquiring knowledge and skills through the use of computers and the internet. It involves accessing educational materials, resources, and courses online, often in a self-paced and interactive manner. E-Learning provides flexibility in terms of time and location, allowing individuals to learn at their own convenience. It is a popular method of education in today's digital age, offering a wide range of subjects and topics for learners of all ages.

Explanation
An intranet is a private network that is restricted to an organization. It is used to share information, resources, and communication within the organization. Unlike the internet, which is a global network accessible to everyone, an intranet is only accessible to authorized users within the organization. Therefore, the correct answer is Intranet.

Explanation
TCP/IP is the correct answer because it is the set of protocols that is used to transfer and receive data on the internet. TCP (Transmission Control Protocol) is responsible for breaking data into packets, ensuring their delivery, and reassembling them at the receiving end. IP (Internet Protocol) is responsible for addressing and routing these packets across different networks. HTTP (Hypertext Transfer Protocol) is a protocol used for transferring data on the World Wide Web, but it is just one application layer protocol that operates on top of TCP/IP.

Explanation
There are four types of E-Commerce.

Explanation
The correct answer is RJ-45. RJ-45 is a type of connector commonly used to connect network devices such as a network interface card (NIC) with a hub. It is an 8-wire connector that allows for the transmission of data between devices in a network. Switch, hub, and modem are not specifically used to connect a network interface card with a hub, making them incorrect answers.

Explanation
The examples of MP3 and Bluetooth belong to the PAN network. PAN stands for Personal Area Network, which is a network that connects devices within a person's immediate vicinity, typically within a range of 10 meters. MP3 and Bluetooth are both technologies commonly used for wireless communication between devices in close proximity, such as connecting a smartphone to wireless headphones or transferring files between devices. Therefore, they fall under the category of PAN network examples.

Explanation
A WAN (Wide Area Network) is a network that covers a large geographical area, such as a country or even the entire world. It connects multiple LANs (Local Area Networks) or other smaller networks together, allowing for communication and data sharing over long distances. This makes it the most suitable option for a network that spreads over a country or across the world.

Explanation
A switch is called an intelligent hub because it can make decisions about where to send data packets based on the destination address. It has the ability to learn and remember the MAC addresses of devices connected to it, allowing for efficient and targeted data transmission. Unlike a traditional hub, which simply broadcasts data to all connected devices, a switch can intelligently direct data only to the intended recipient, reducing network congestion and improving overall network performance.