Iba Lesson 3a Review

A LAN (Local Area Network) is a network that covers a small, localized area such as a home, office, or building. It connects devices within this limited area, allowing them to share resources and communicate with each other. On the other hand, a WAN (Wide Area Network) is a network that spans a larger geographical area, often connecting multiple LANs together. It covers a wide area such as cities, countries, or even continents. Therefore, the correct answer states that a LAN spans a confined geographic area, while a WAN consists of multiple LANs.

TCP/IP is often supplied by an Internet Service Provider (ISP). TCP/IP stands for Transmission Control Protocol/Internet Protocol and is a set of protocols that allows different devices to communicate and connect to the internet. An ISP provides the necessary TCP/IP configuration settings to establish a connection to the internet. Without TCP/IP, a computer or device would not be able to properly communicate and access the internet.

Data travels across networks in packets. A packet is a small unit of data that is transmitted over a network. When data is sent from one device to another, it is divided into smaller packets. Each packet contains a portion of the data along with the necessary information for routing and reassembling the data at the receiving end. These packets are then transmitted separately across the network and can take different paths to reach the destination. Once all the packets arrive at the destination, they are reassembled to recreate the original data.

The Department of Defense (DoD) first funded the development of the internet. This is because the internet was originally created as a military project called ARPANET in the late 1960s. The DoD's Advanced Research Projects Agency (ARPA) provided the initial funding for ARPANET, which eventually evolved into the internet we know today. The intention behind this funding was to create a decentralized network that could withstand a nuclear attack and ensure reliable communication between military installations.

A server is a computer that is responsible for storing and providing information requested by a client application. It acts as a central hub where data is stored and accessed by multiple client devices. Servers are designed to handle heavy workloads and provide reliable and efficient access to data for the clients. They can store and manage databases, host websites, and perform various other tasks to support client applications.

A network is a group of computers that are connected to each other, allowing them to communicate with one another, share resources such as files and printers, and exchange data. This definition accurately describes the concept of a network, emphasizing the interconnectedness and ability to facilitate communication and resource sharing among the computers within the network.

The correct answer is 802.11 standards. The 802.11 standards refer to a family of specifications for wireless network technology, commonly known as Wi-Fi. These standards define the protocols and mechanisms for wireless communication, allowing devices to connect and communicate over wireless networks. The 802.11 standards specify different versions and variations of Wi-Fi, such as 802.11a, 802.11b, 802.11g, 802.11n, and 802.11ac, each offering different speeds, ranges, and capabilities.

A client is a term used to describe a computer that is connected to a central server and can communicate with it. The client can send requests for information to the server and receive the requested information in return. This setup allows the client to access and utilize the resources and services provided by the server.

An Internet Service Provider (ISP) is an organization that maintains a gateway to the Internet and rents access to it. This means that ISPs are responsible for providing individuals and businesses with the ability to connect to the Internet. They maintain the necessary infrastructure and equipment to establish this connection and offer various types of internet access, such as dial-up or high-speed direct connections. ISPs play a crucial role in enabling users to access and utilize the vast resources available on the Internet.

The element of TCP/IP refers to the protocol software used to communicate with the Internet. TCP/IP is a set of communication protocols that allows computers to connect and exchange data over the internet. It provides a standardized way for devices to communicate and ensures that data packets are transmitted reliably and efficiently. TCP/IP is used by various operating systems like Windows, Linux/UNIX, Macintosh, etc., and can be implemented on various devices like PCs, smartphones, smart TVs, tablets, etc.

TCP/IP is the correct answer because it is the protocol suite that enables computers to communicate with each other over the internet. TCP (Transmission Control Protocol) ensures the reliable delivery of data packets, while IP (Internet Protocol) handles the addressing and routing of these packets across the internet. Together, TCP/IP provides the foundation for internet communication by establishing connections, breaking data into packets, and ensuring their successful transmission and reassembly at the destination. HTTP, FTP, and POP are all application layer protocols that rely on TCP/IP for communication, but they are not the fundamental protocols required for computers to communicate over the internet.

T1 is the correct answer because it is a digital transmission technology that can transmit data over a network connection at speeds up to 1.544 MB/s. ISDN, E1, and DSL are not capable of reaching this speed.

The correct answer is DSL stands for Digital Subscriber Line, a direct Internet connection method that uses digital phone lines and an xDSL modem. This statement accurately describes DSL as a method of connecting to the internet using digital phone lines and an xDSL modem.

A node refers to any entity or addressable device on a network that can be managed. This means that a node can be any device or entity, such as a computer or a network device, that is connected to a network and can be controlled or monitored. It can include routers, switches, servers, workstations, or any other device that is part of a network infrastructure. The term "managed" implies that these nodes can be remotely controlled or administered, allowing network administrators to monitor and configure them as needed.

Client software refers to the programs or applications that are used to connect to the internet. This can include web browsers, email programs, or mobile applications. These software allow users to access and interact with the internet by sending and receiving data. They provide the interface and functionality needed to browse websites, send and receive emails, or use internet-based applications.

The least expensive way to access the internet is with phone lines, an analog modem, and an ISP. This is because phone lines are widely available and relatively affordable compared to other options like DSL or cable modems. An analog modem allows the computer to connect to the internet through the phone lines, and an ISP provides the internet service. This method may have slower speeds compared to DSL or cable, but it is the most cost-effective option for internet access.

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The given answer is correct because to access the internet, one needs an internet connection to establish a network connection between the device and the internet. Additionally, client software is required to interact with the internet, such as web browsers or email clients. An internet address, also known as an IP address, is necessary to identify and locate devices on the internet. Therefore, these three elements, internet connection, client software, and internet address, are essential for accessing the internet.

ISDN connection and DSL connection are the two principal methods of connecting to the internet through an Internet Service Provider (ISP). ISDN (Integrated Services Digital Network) is a digital telephone line that allows for fast data transfer rates, while DSL (Digital Subscriber Line) uses existing telephone lines to provide high-speed internet access. Both methods offer faster and more reliable connections compared to dial-up or standard modem connections.

A traditional modem and an ISDN line differ in terms of the type of line they use and the way they handle digital signals. ISDN uses a digital line, meaning it can transmit digital signals directly without any translation. On the other hand, a traditional modem needs to translate digital signals to analog and back in order to transmit them over an analog line. This fundamental difference in the type of line and signal handling sets them apart from each other.