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21 Cards in this Set
- Front
- Back
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What is a computer network? |
A computer network is a group of interconnected computing devices that can communicate and exchange data. |
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What are the three types of computer networks? |
local area networks (LAN), wide area networks (WAN), and peer-to-peer networks. |
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What is a local area network (LAN)? |
A local area network (LAN) is a computer network that spans a relatively small area, such as a home, office, or small group of buildings. |
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What is a wide area network (WAN)? |
A wide area network (WAN) is a computer network that covers a large geographical area, such as a city, country, or even the entire world. |
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What is a peer-to-peer network? |
A peer-to-peer network is a type of network where each computer acts as both a client and a server, allowing data to be shared directly between them without the need for a central server. |
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What is a network topology and what are the three main types? |
A network topology is the arrangement of devices on a computer network, such as how they are connected to each other and how data is transmitted between them. The three main types mentioned are: star topology, bus topology, and ring topology. |
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What is a fiber optic cable and what are its benefits for computer networks? |
A fiber optic cable is a type of cable that uses light to transmit data, rather than electrical signals. It offers several benefits for computer networks, including higher bandwidth, longer distances, and improved reliability and security. |
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What is a router in a computer network? |
A router in a computer network is a device that forwards data packets between computer networks based on their IP addresses. |
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What is the difference between a network switch and a network hub? |
A network switch is a device that connects devices on a computer network, allowing them to communicate with each other and exchange data. A network hub is a simpler device that broadcasts incoming data to all connected devices, but does not perform the same level of data routing as a switch. |
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What is an IP address and what is IPv4? |
An IP address is a numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication. IPv4 is the fourth version of the Internet Protocol, which uses 32-bit addresses to identify devices on a network. |
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What is the difference between the World Wide Web and the Internet? |
The World Wide Web (WWW) is a huge information system that connects people across the world and can be thought of as an electronic book. It is different from the internet, where the WWW refers to the pages you see and the internet refers to the network of connected computers. |
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What is the Internet and what enables humans and machines to connect with each other on it? |
The Internet is a system that enables the connection of humans and machines through a network of networks, and its functioning is based on specific protocols. |
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What is HTTPS and how does it ensure secure data transmission over the internet? |
HTTPS (Hyper Text Transfer Protocol Secure) is a secure web connection that is used for transmitting data over the internet securely. This protocol encrypts the data being sent between a user's web browser and a website's server, making it nearly impossible for anyone else to intercept or modify the information in transit. |
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What is network redundancy and how does it increase the reliability of a network? |
Network redundancy is the process of providing multiple paths for data transmission in a network to make it fault-tolerant. The concept behind network redundancy is that if one device or path within the network fails, another can automatically take over, allowing for the network to continue functioning without interruption. By having multiple paths for data to flow, the reliability of the network is increased as it is less likely to fail. |
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What is fault-tolerance in a system and how does increasing redundancy improve it? |
Fault-tolerance refers to the ability of a system to continue functioning even in the event of a failure, and having more redundancy increases its level of fault-tolerance. |
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What is Ethernet cable used for and how does it compare to wireless internet in terms of speed? |
The Ethernet cable is used to connect a computer to a router or to connect signal boosters to a router, among other commercial uses. It is traditionally faster than wireless internet. |
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What is wireless technology used for and how is it used in homes, telecommunication networks, and businesses to connect devices? |
Wireless technology is used for transmitting data from one point to another using radio waves or cellular waves. It is used in homes, telecommunication networks, and businesses to connect between devices, allowing for the transfer of data without the need for physical cables. |
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What is a network interface card and how does it enable a computer to connect to a network and control the flow of data on the network? |
A network interface card (NIC) is a hardware component that is installed on a computer to provide it with a dedicated, full-time connection to a network. It implements the physical layer circuitry necessary for communication with a data link layer standard, such as Ethernet or Wi-Fi, and represents a device that can prepare, transmit, and control the flow of data on the network. |
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What are packets and how do they enable data to be transmitted over a network and pieced back together at the receiving end? |
Packets are the units of data that are sent over the network and labeled with metadata, including a unique packet number. The labeling and individual sending of packets allow for the reassembly of data in the correct order at the receiving end, even if the packets arrive out of order. The unique packet number enables the recipient to piece the packets back together. |
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What is binary and how was it invented, and what is its significance in computing? |
Binary is a base 2 number system invented by Gottfried Leibniz that uses only two digits, 0 and 1, to represent all values. It is significant in computing because everything related to computers uses binary, including the representation of data and instructions in a computer's memory. |
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What is the term for a combination of letters and numbers used mainly for IPv6 addresses. |
Hexadecimal |
