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D413 Telecomm and Wireless Communications STUDY GUIDE, Exams of Information Technology

Chamberlain College of NursingInformation Technology

D413 Telecomm and Wireless Communications STUDY GUIDE

Typology: Exams

2023/2024

Available from 02/21/2024

oliver001
oliver001 🇺🇸

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D413 Telecomm and Wireless
Communications STUDY GUIDE
Network
Interconnected collection of computers and communication devices
Node
Individual computer or device connected to a network
Brainpower
Host
Computer or device connected to a network that provides services
Advantages of Networking
Sharing equipment and data
Disadvantages of Networking
Personnel and cost increase, vulnerabilities to cyberattacks
Local Area Network (LAN)
A network that is usually confined to a single building and managed by a single
entity. Example: Office Building
Metropolitan Area Network (MAN)
Consists of two or more LANs connected with private or public communication lined
within the same geographic area—for example, a computer network used by
governmental employees of an entire city.
Wide Area Network (WAN)
Consists of a large number of networks and PCs connected with private and public
communication lines throughout many geographic areas; for example, computers
used by the US government.
Personal Area Network (PAN)
A small network, perhaps consisting of a single computer and mobile device.
Campus Area Network (CAN)
A network spread across multiple buildings in the same geographical location, much
like a college campus.
Global Area Network (GAN)
Any network that spans multiple countries, for example, the Internet.
Star Topology
A topology that involves running cables from each node to connect a single point.
The center is usually a device known as a hub.
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D413 Telecomm and Wireless

Communications STUDY GUIDE

Network Interconnected collection of computers and communication devices Node Individual computer or device connected to a network Brainpower Host Computer or device connected to a network that provides services Advantages of Networking Sharing equipment and data Disadvantages of Networking Personnel and cost increase, vulnerabilities to cyberattacks Local Area Network (LAN) A network that is usually confined to a single building and managed by a single entity. Example: Office Building Metropolitan Area Network (MAN) Consists of two or more LANs connected with private or public communication lined within the same geographic area—for example, a computer network used by governmental employees of an entire city. Wide Area Network (WAN) Consists of a large number of networks and PCs connected with private and public communication lines throughout many geographic areas; for example, computers used by the US government. Personal Area Network (PAN) A small network, perhaps consisting of a single computer and mobile device. Campus Area Network (CAN) A network spread across multiple buildings in the same geographical location, much like a college campus. Global Area Network (GAN) Any network that spans multiple countries, for example, the Internet. Star Topology A topology that involves running cables from each node to connect a single point. The center is usually a device known as a hub.

Ring Topology Common network topology with devices connected in a circular loop Bus Topology Network topology that uses a single cable or conductor to connect all nodes on the network. Mesh Topology A network topology where each node is connected to each of the other nodes. The number of cable paths rapidly increases as more nodes are added. Centralized Administration Methodology used to administer a client/server network Decentralized Administration Methodology used to administer a peer-to-peer network Cloud Computing Offers services including SaaS, PaaS, and IaaS Private Cloud Type of cloud that is not accessible to the general public Public Cloud Type of cloud that is accessible to the general public Hybrid Cloud Type of cloud that combines private and public cloud services Network Operating System (NOS) Provides a communication system between nodes. Examples include Windows Server 2008/2012/2016, Unix, and Linux. Data Segments Divided parts of data to be transmitted on a network Protocol Set of rules that controls communication between two nodes MAC Address Physical address used to identify a node on a network IP Address Logical address used to identify a node on a network Media Converter Converts one type of electrical signal into another Repeater Regenerates digital signals, allowing the network media to exceed its recommended length. Hub Provides a central connection point for a network Gateway Provides a connection between a local area network and the Internet Bridge Segments a larger network to reduce collisions Switch Serves as a central connection point and can provide network segmentation. Router Connects various networks together and provides alternate routes for data packets IEEE

The mixing of two radio signals, typically a carrier wave with a data signal. Infrared Used in line-of-sight transmissions and is not susceptible to radio interference. Orthogonal Frequency Division Multiplexing (OFDM) Transmission technique used with wireless devices that use the 5-GHz radio band and can achieve a data rate as high as 54 Mbps. It divides the allotted frequency into channels similar to frequency hopping and direct sequencing. Digital. Dense Wavelength Division Multiplexing (DWDM) An optical multiplexing technology that allows several different streams of data to travel down the same optical fiber simultaneously. Frequency Division Multiplexing (FDM) Divides the available bandwidth into frequency bands, and each band is used for a different communication channel. Analog or Digital. Synchronous Time Division Multiplexing Which multiplexing technique transmits each signal from one input source via a single time slot through the creation of different slots? Asynchronous Time-Division Multiplexing Which category of multiplexing randomly allocates time slots to different data signals depending on the rate at which they are being generated from the source? Needs Which assessment is the first part of the design process? Isolation Which electrical system is required for network equipment according to industry standards? Frequency Division Multiplexing (FDM) A company is developing a television network to broadcast local news content using analog signals. Which multiplexing technique should be used? Time-division multiplexing Which type of multiplexing is used to send and receive digital signals between connected devices? Noise Which factor contributes to signal attenuation? Frequency Which term is defined as the number of cycles a signal completes in one second? phase A wave position relative to a reference position. spread spectrum The radio transmission technique that subdivides the allocated frequency range into smaller units called channels. frequency hopping and direct sequencing The two types of spread-spectrum transmission techniques are: spatial multiplexing Transmitting two or more streams of data in the same frequency channel IEEE 802. IEEE standard that describes the use of wireless personal area networks (WPANs) Cyclic Redundancy Check (CRC) An enhanced parity check that not only identifies when an error occurs but also corrects the error.

QoS (Quality of Service) The result of specifications for guaranteeing data delivery within a certain period of time after their transmission. Developed to minimize latency. Visible light waves Which waves have higher frequencies than infrared transmission frequencies? Low powered radio waves Which type of waves are used in Bluetooth transmission? Electric motors What is a source of industrial noise? A cable transmitting signals between 15 and 20 MHz Which cable realizes noise protection with the use of foil shielding?

IEEE standard that describes the characteristics of various Ethernet technologies, such as 10 Mbps, Fast Ethernet, Gigabit Ethernet, and 10 Giga-bit Ethernet. Analog signal A signal that has a continuous range of values, much like a wave. Digital Signal Signal that has discrete values of on or off. Crosstalk Interference that comes from neighboring conductors inside a wire's insulating jacket Resistance The opposition to direct current (DC) Cat 5/5e Maximum Frequency Rating 100 MHz Cat 6 Maximum Frequency Rating 250 MHz Cat 6a Maximum Frequency Rating 500 MHz Cat 7 Maximum Frequency Rating 600 MHz Cat 5/5e Data Rate 100 Mbps/1000 Mbps (using 4 pairs) Cat 6 - Data Rate 1 GBps Cat 6a - Data Rate 10 Gbps Cat 7 - Data Rate 10 Gbps Cat 8 - Data Rate 40 Gbps Auto-MDIX compliant device Automatically reassigns the pin functions so that a crossover cable is not required for communication. demodulation The receiver separates the voice wave from the carrier wave. Wireless Access Point (WAP) Provides a connection between a wireless network and a cable-based network. 802.1x A standard for authentication methods for wireless networking. Service Set Identifier (SSID)