Unit 5: Networking Fundamentals

Over the next five years, what type of devices will surpass Internet access from personal computers? Mobile Laptops Chrome Correct! Mobile devices such as smartphones will surpass personal computers accessing the Internet.

Mobile Correct! Mobile devices such as smartphones will surpass personal computers accessing the Internet.

Which of the following is not a wireless telecommunication networking protocol? POP Wi-Fi Bluetooth

POP Correct. POP stands for Post Office Protocol in the application layer of the internet standard protocol.

What is the public switch telephone network (PSTN)? PSTN is the voice telephone network around the globe. PSTN is the old telegraph analog system. PSTN is the wire line infrastructure.

PSTN is the voice telephone network around the globe. Correct. The public switch telephone network is the entire interconnected voice telephone network around the world. It is a switch-based telephone network circuit that has improved with technology since first invented by Alexander Graham Bell, the inventor of the telephone.

What is a benefit of packet switching? Packet switching does not need a dedicated network connection. Packet switching compiles all data to be transmitted in one packet. Packet switching cannot handle multi-media transmission, which can be expensive to send.

Packet switching compiles all data to be transmitted in one packet. Packet switching, unlike a voice telephone connection, does not need a direct connection. Data is broken up, not sent whole, and re-assembled at the destination.

While small businesses and home offices typically use _____________ topology, RMD will be switching to ____________ topology.

Peer to peer client server Correct! RMD is considering adding a server, which will require them to switch to client-server technology. Correct! Most small businesses and home offices use peer-to-peer topology.

Computer networks enable circuit switching. What does this mean? They create a point-to-point analog circuit. They create a point-to-point digital connection. They create a point-to-point packet digital circuit in circuit switching. None of the above.

They create a point-to-point packet digital circuit in circuit switching Correct! Computer networks create a point-to-point packet digital circuit in circuit switching, which allows point-to-point communication.

The ________ layer in the OSI (Open System Interconnection) model defines the electrical and physical specification of the device and transmission medium.

physical Correct! The physical layer specifies the device to transmission medium connection.

A ___________is a set of rules applied to data switched networks to ensure quality and accuracy of signal transmission and reception.

protocol In telecommunications, rules are applied to data switched networks to ensure accurate and quality of data communication.

The purpose of a network protocol is to ensure the _________ of communication.

quality Correct! Network protocols ensure the quality and accuracy of the information being transmitted on a network.

Which of the following best describes a computer network? --A computer network is a bus link that transfers data between computer components. --A computer network is a data communications system that uses cable or wireless media to transmit and receive signals. --A computer network is a small group of computers connected and sharing data files.

--A computer network is a data communications system that uses cable or wireless media to transmit and receive signals. A computer network is a collection of interlinked computers that can exchange information over links in the form of digital packets.

Telecommunications technology has always been essential to business. What is the best definition of telecommunications? --Exchanging information via electrical signals --Talking to someone via a wireless device --Connecting to the Internet via a browser

--Exchanging information via electrical signals Telecommunications is achieved by exchanging information (sending or receiving) between various entities over electrical, electromagnetic, or digital networks over short and long distances.

The TCP protocol consists of ______ layers. __________is not a protocol layer but an OSI layer.

4 physical Correct! The Transmission Control Protocol, or TCP protocol, consists of four abstraction layers. Correct! The physical layer is not part of the TCP model, but of the OSI model.

Why should businesses have a social media strategy? All business over the Internet comes from social media. Social media is an e-commerce business platform. Social media is an ubiquitous marketing channel. Incorrect. Social media is a marketing channel for businesses, but not an e-commerce business platform.

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Large business enterprises require core routers in their telecommunications computer network to support multiple telecommunications interfaces of the highest speed. What else does a core router do? A core router links LANs together. A core router is the fastest router. A core router operates in the Internet backbone.

A core router operates in the Internet backbone. Correct! A core router is very powerful (and expensive), and is used to aggregate data and connect the enterprise to the Internet in the backbone in order to handle large amounts of traffic.

What is the function of a network bridge? A network bridge links two network LANs together. A network bridge is a simple switch. A network bridge connects virtual hosts together.

A network bridge links two network LANs together. Correct. Bridges in network topologies are used to connect or link separate networks together.

What is a network host? This is also known as data terminal equipment in computer networking hardware. A network host is a central switching computer. A network host is a physical node with an IP address. A network host is a database system. Correct! A network host is a computer or a physical node, with an Internet Protocol (IP) address connected to a network.

A network host is a physical node with an IP address. Correct! A network host is a computer or a physical node, with an Internet Protocol (IP) address connected to a network.

What is a network management application? A network management application is the operating system needed in computer networks. A network management application retrieves and analyzes network traffic data. A network management application is a sniffer.

A network management application retrieves and analyzes network traffic data. Correct. Large businesses must design and monitor their computer networks because of their complexity. A network management application is a software tool that allows network administrators to troubleshoot and ensure optimal performance through network traffic data retrieval and analysis.

Why do home office or small business computer networks sometimes use a peer-to-peer topology? A peer-to-peer topology allows file sharing between computers. A peer-to-peer topology offers faster network performance. A peer-to-peer topology helps manage a centralized database.

A peer-to-peer topology allows file sharing between computers. Correct! Small business or home networks often do not have a server computer, therefore peer-to-peer is more desirable.

A network protocol designed to handle broadband integrated services such as voice and video is

ATM ATM stands for Asynchronous Transfer Mode and was designed to provide quality of data of voice and video via circuit switching.

What is the difference between an analog signal and a digital signal? Analog signals carry voice while digital signals carry data. Analog signals are electrical, while digital signals are optical. Analog signals are continuous while digital signals are not continuous.

Analog signals are continuous while digital signals are not continuous. Correct! Analog signals are continuous electrical waveform signals while digital signals are discrete, binary, noncontinuous electrical waveforms.

A(n) ______________- network is able to carry data, voice, and multimedia information.

Converged Correct! Convergence means the ability to carry voice, data, and video.

RMD requires a telecommunications network that will carry voice, video, and data. What is this an example of? Protocol Internet of Things Convergence

Convergence Correct! The ability for a telecommunication network to carry voice, data, and video is called convergence.

What information is enclosed in transmission packets? Select the most accurate statement. Data packets include destination address, relay information, and error detection. Data packets include destination address and router data only. Data packets include router data and information cargo only.

Data packets include destination address, relay information, and error detection. Correct! Among other things, data packets have the destination IP address, the actual information to be sent, which can be parceled into many other packets, and error detection in case transmission fails.

The biggest impact to business and information management systems will be from mobile devices pushing the need for mobile applications. Mobile devices will have which of the following impacts except what? Enhanced Ethernet capabilities Increased wireless network demand Increased need for remote access Mobile device web development

Enhanced Ethernet capabilities Correct! Mobile device growth will not warrant enhanced Ethernet capabilities.

Assume you are building out wired technologies in an old building. If you are replacing token rings, what technology are you most likely to be replacing it with? Fiber Ethernet Wireless

Ethernet Correct! Ethernet replaced token rings as a data communications standard in LAN applications.

True or False. One downside of convergence is that when the network goes down, you only have traditional telephone service.

False Correct! There is no telephone service when a convergence network is inoperable.

The increased use of smartphones and tablets has required RMD to enable Wi-Fi connectivity on their LAN. Which of the following identifies the protocol used for the Wi-Fi connectivity? File Transfer Bluetooth IEEE 802.11

IEEE 802.11 Correct! Wi-Fi is part of the IEEE 802.11 wireless communication protocol used to connect devices in a LAN environment.

Which of the following is not a circuit switching protocol? Frame Relay IP ATM

IP Incorrect. Frame relay is a virtual circuit protocol used to establish circuit switching for voice or video.

Small office or home office routers enable computers to access the ______________ . Connection to the web is enabled by service providers called _________________ .

Interent ISP Small and large offices use routers to connect to the Internet, or world wide web. ISPs, or Internet Service Providers, offer services to the business to gain access to the Internet.

____________ describes the type of telecommunications network that exists at RMD.

LAN Correct! The company uses a local area network (LAN), which typically connects computer systems of an organization or a floor of a building.

WAN networks are interconnected via the Internet, private networks, or ____? --Public switched telephone networks --corporate area networking --local are networks

Public switched telephone networks WANs are interconnected through the Internet using IP protocol, or through private networks and even through the POTS, the plain old telephone system. WAN means wide area network; the Internet is a WAN.

Which of the following is NOT a computer network hardware device? Router Hub Switch Sniffer

Sniffer Correct! A sniffer or packet analyzer is used to monitor or log traffic on a network for troubleshooting or analysis, but is not a network hardware device.

Which of the following best defines social media in today's information age? Social media is a popular Big Data application. Social media is a new media replacing TV and radio. Social media are Internet-based applications where users interact with one another.

Social media are Internet-based applications where users interact with one another. Correct! Social media is a new medium that is Internet based, and allows user to share ideas or information.

Which of the following is not a modern telecommunications system technology? --Satellite --VoIP --Telegraph

Telegraph The telegraph was the most prevalent telecommunications network in the late nineteenth century.

What best describes the implications of the Internet of Things? The Internet of Things replaces e-commerce. The Internet of Things leads to automated servicing of smart devices. The Internet of Things will create robots that automate all tasks.

The Internet of Things leads to automated servicing of smart devices. Correct! The Internet of Things (IoT) will make all devices and systems "smart" so they will be able to communicate via the Internet to automate servicing needs.

Why do communications networks use defined rules or standards called protocols? To ensure communication between devices is encrypted. To ensure communication between devices is accurate and understood. To ensure communication between devices is rapid.

To ensure communication between devices is accurate and understood. In communications networks, data are transmitted by devices, travel over a medium, and are received by other devices. Protocols are used to ensure the transmission of digital data communicated in packets between devices is accurate and understood by the receiving device.

What does TCP/IP stand for? Technical Communication Products/Internet Program Transmission Control Protocol/Internet Protocol Total Communication Protocol/International Protocol

Transmission Control Protocol/Internet Protocol Correct! TCP/IP stands for Transmission Control Protocol/Internet Protocol and is the communication rule of the Internet.

True or False. You are installing a new network for a small business. Your client makes the statement, "Businesses, regardless of size, need hubs, switches, and routers to access the world wide web." Is this true or false?

True Correct! Large business might require significant network equipment in order to optimize network performance, but small businesses can manage with only a router.

How are WAN networks interconnected? --Via Ethernet network technology components --Via the plain old telephone system (POTS) --Via the Internet, private networks, and the public switched telephone network

Via the Internet, private networks, and the public switched telephone network WAN networks are collections of remote business campuses that use the Internet, private, and public switched networks.

How is voice or video information carried on digital networks? Voice and video data are transmitted using circuit switching methods. Voice and video data are transmitted in packet switched networks. Voice and video data are transmitted in continuous digital waveforms.

Voice and video data are transmitted using circuit switching methods. Correct! Voice and video data are packetized, but transmitted on circuit switching networks instead of packet switching networks.

You are managing a small business network. They have a web or database server so you will need to design their network as a _________________ topology, while a large enterprise would best benefit from a _____________- network to manage network moves and changes.

client-serve virtual Correct! Large enterprises can manage moves and changes more productively with virtual network capability. Correct! Small businesses with computer server needs should design their networks as client-server.

A computer network is built for a small business. A router is used for Internet access and a switch is placed on the network. The purpose of the switch in this scenario is to _________________________________________

connect computer devices together on the LAN Correct! The switch connects computer devices together on a LAN.

The ability for a telecommunication network to carry voice, data, and video is called ___________.

convergence Correct! The ability for a telecommunication network to carry voice, data, and video is called convergence.

Social media, mobile devices, and ____________ are three growing trends in the business sector that have wide implications and offer opportunities and risks.

cyber security Correct! Social media, mobile networking, and cyber security are important growing trends in information technology.

True or False. The VoIP, video conferencing, and multimedia communications at RMD will now be managed with packet switching.

false Correct! Circuit switching is used for VoIP applications, as well as video conferencing, video, and multimedia communications.

The designers are considering the addition of a small showroom in which they can showcase the smart technology of the appliances and lighting that is available. This would be an example of _________________

internet of things Correct! The term Internet of Things means that in the future, all devices, including appliances, cars, networks, systems, etc., will be connected to the Internet.

A network host is a _________ in a data communications network and is assigned an IP address.

node A network host or data terminal equipment is a node in a network.

True or False. Data packet switching is more efficient than circuit switching because it leverages the entire computer network capacity.

true Correct! Data packet switching can be broken up and sent throughout the entire network to be reassembled at the destination.

True or False. If you were building out a telecommunications network and wanted to take signals and data packets from multiple devices and combine them into a single signal you would use a multiplexer.

true Data signals travelling over computer networks are combined together by the use of a multiplexer.

Telecommunication networks transmit data, voice, and ________ over long distances.

video Telecommunications networks are able to transmit video, which is also called broadband due to its intensive data bandwidth requirement.

Large organizations leverage __________ network management applications to better handle changes and moves.

virtual Virtual network management applications are used to manage moves and changes more productively.