Computer Network - I Quiz

Domain name resolution is done by a designated server called DNS (Domain Name System). DNS is responsible for translating domain names into IP addresses, allowing users to access websites and other resources on the internet using human-readable domain names instead of numerical IP addresses. DNS servers store a database of domain names and their corresponding IP addresses, and when a user enters a domain name in their web browser, the DNS server is queried to retrieve the corresponding IP address, enabling the connection to the desired website or resource.

VoIP stands for Voice over Internet Protocol. It is a technology that allows voice and multimedia communication to be transmitted over an IP network, such as the internet. This technology converts voice signals into digital data packets and sends them over the internet, allowing for cost-effective and efficient communication. VoIP has become increasingly popular as it offers advantages such as lower costs, flexibility, and the ability to integrate with other internet-based services.

A repeater should be installed to ensure smooth communication between the design unit and market unit of Seven Brother Fashion Inc. A repeater is a networking device that amplifies and regenerates signals, allowing them to travel longer distances without loss of signal. By installing a repeater, the company can overcome the loss of signal issue and successfully share the stock related information between the LANs.

Uninterrupted power supply is not a feature of networking. Networking primarily focuses on resource sharing, reliability, and reduced cost. Uninterrupted power supply, on the other hand, is a feature related to ensuring continuous power availability to devices, systems, or networks, but it is not directly related to the networking functionality itself.

When two mobiles are connected using Bluetooth to transfer a video, a Personal Area Network (PAN) is formed. A PAN is a network that connects devices within a short range, typically within a few meters. Bluetooth technology allows for wireless communication between devices in close proximity, making it ideal for creating a PAN. In this scenario, the two mobiles are directly connected to each other, forming a small network specifically for the purpose of transferring the video.

In a bus topology, all nodes are connected to a single co-axial cable, creating a linear network. Each node receives all the data transmitted on the cable, but only the intended recipient processes it. This topology is cost-effective as it requires less cable and is easy to install. However, if the main cable fails, the entire network can be affected.

A web server is a computer that runs websites. It is responsible for hosting and delivering web pages to users who request them through web browsers. The web server stores the website files and processes the requests, ensuring that the correct content is delivered to the user's browser. It acts as a central hub for managing and serving web content to visitors.

A repeater is a network device that amplifies or regenerates a signal over the same network. It receives the signal, strengthens it, and then transmits it again, ensuring that the signal does not become too weak or corrupted. This helps in extending the range of the network and improving the quality of the signal.

A modem is a device that converts data from a digital bit stream into an analog signal and vice versa. It allows digital devices, such as computers, to connect to an analog network, such as a telephone line. The modem modulates the digital data into analog signals for transmission over the network and demodulates the analog signals back into digital data for the receiving device. This enables communication between digital devices and analog networks, making it an essential component for connecting to the internet through a telephone line.

A web browser is an interface that helps a computer user gain access to all the content that is on the Internet. It is a software application that allows users to view and interact with websites, web pages, and other online content. Web browsers interpret HTML code, display web content, and provide features such as navigation tools, bookmarks, and search capabilities, enabling users to browse the internet and access various online resources.

In a star topology, each node is connected to a central switching device, such as a hub or a switch, using independent cables. This central device acts as a central point of communication, allowing all nodes to communicate with each other through it. This topology is commonly used in Ethernet networks and provides better performance and scalability compared to other topologies like bus or ring.

A dynamic website is the correct answer because it allows for content changes according to the client request. Unlike a static website, which displays the same content to all users, a dynamic website can generate and display different content based on user input or other factors. This flexibility makes dynamic websites more interactive and personalized for users.

First party cookies are created by the website that the user is visiting. These cookies are necessary to keep track of the user's personal preferences and the current session. They enable the website to remember information about the user, such as login details or items in a shopping cart. First party cookies are considered essential for the functioning of the website and are typically used to enhance the user experience.

The domain name in the given URL is www.cbse.nic.in.

Web hosting is a service that allows organizations and individuals to post a website or web page onto the Internet. This means that web hosting providers allocate space on their servers for users to store their website files. When someone types in the website address, the hosting provider retrieves the files and displays them on the user's device. Essentially, web hosting makes it possible for websites to be accessible and viewable online.

A gateway is a device that is used to connect different types of networks and performs the necessary translation so that the connected networks can communicate properly. It acts as a bridge between networks with different protocols, allowing data to be transmitted and received correctly. Gateways are commonly used in situations where different networks, such as LANs and WANs, need to be connected and communicate with each other.

The correct answer is TCP/IP. TCP/IP is the protocol used by the internet to establish communication and link devices worldwide. TCP (Transmission Control Protocol) ensures reliable and error-free transmission of data, while IP (Internet Protocol) is responsible for addressing and routing packets across the network. Together, TCP/IP provides a standardized set of rules for devices to communicate and exchange information over the internet.

A gateway is a network device that connects two different networks together, allowing them to communicate properly. In this scenario, Amit needs a device to connect two networks that work upon different networking models. A gateway is capable of translating and routing data between networks with different protocols, making it the appropriate choice in this situation. A bridge, modem, and hub do not have the same capabilities as a gateway and would not be suitable for connecting networks with different networking models.

A static website uses HTML code to create and structure its web pages. HTML (Hypertext Markup Language) is the standard markup language used for creating web pages and displaying content on the internet. It defines the structure and layout of the webpage, including headings, paragraphs, images, links, and other elements. Unlike dynamic websites, static websites do not require server-side processing or a database to function. Instead, they are made up of fixed files that are sent to the user's web browser as they are, without any further processing.

All three IP addresses, 121.23.1.45, 192.168.0.254, and 192.168.0.1, are valid IP addresses. They follow the standard format of four numbers separated by periods, with each number ranging from 0 to 255. The first address, 121.23.1.45, has four numbers within the valid range. The second address, 192.168.0.254, also has four numbers within the valid range. The third address, 192.168.0.1, again has four numbers within the valid range. Therefore, all three addresses are valid IP addresses.