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CIS 110 Chapter 10
Communications and Networks
| Question | Answer |
|---|---|
| Digital communications describes a process in which two or more computers or devices transfer ________, _________ and instructions | data, information |
| _____ is a transmission media on which data, instructions, or information travel. | communications channel |
| A __________ is a LAN that uses no physical wires. | WLAN |
| A network that covers a large geographic area, such as a city, country, or the world, using a variety of wired and wireless transmission media? | WAN |
| PANs use _____________ , Wi-Fi or a special usb connecter to connect devices. | bluetooth |
| The design of computers, device and media in a network is referred to as ____________ and could be peer-to-peer or client/server | network architecture. |
| What kind of computer controls access to the hardware, software, and other resources on the network and provides a centralized storage area for programs, data, and information? | host |
| ___________ servers perform a specific task and can be placed with other servers to perform multiple tasks. What are these kind of servers call? | dedicated |
| Ring ___________ can span a larger distance than a bus network, but it is more difficult to install. | topology |
| Network ____________ defines guidelines that specify the way computers access the medium to which they are attached, the type(s) of medium used, the speeds used on different types of networks, and the type(s) of physical cable and/or the wireless | standards |
| ____________ is a network standard that specifies no central computer or device on the network should control when data can be transmitted? | ethernet |
| ______________________ invented the Ethernet | Robert Metcalfe |
| A data transfer rate equivalent to one million bits per second is known as ___________ | Mbps |
| ____________ is a family of wi-fi standards | 802.11 |
| With additional equipment, the range of ______ devices can be extended up to 325 feet | Bluetooth |
| ____________ software can detect problems—such as why traffic is flowing slowly—on networks that use the TCP/IP protocol | packet sniffer software |
| Sven Mattisson and Jaap Haartsen invented ___________ technologies. | Bluetooth |
| _____________ defines how a network uses close-range radio signals to communicate between two devices or objects equipped with this technology | NFC |
| __________ internet connection share the nodes with hundreds of other users, has widespread availability | cable |
| ____________is a popular alternative to cable internet connection. | DSL |
| _____ has the fastest transfer rates. | FTTP |
| __________ is defined as being capable of transmitting data, instructions, and information between a sending device and a receiving device | communications |
| __________ modems send and receive digital data over and information to and from a digital line? | broadband |
| ________________ is a central communications device that allows computers and devices to transfer data wirelessly among themselves or to transfer data wirelessly to a wired network? | wireless access point |
| ____________ is a communications device that connects multiple computers together to share a single broadband Internet connection such as through a cable modem or DSL modem, and transmits data to its correct destination on a network? | router |
| A router can roughly support up to ___________ or more computers in a network. | 200 |
| A __________ enables a computer or device that does not have built-in networking capability to access a network, but is not necessary if you have one built-in. | NIC, network interface card |
| a ___________ network connects multiple computers and devices together at your house. | home |
| For best performance of a communications channel, ________ should be high and ___________ should be low | bandwidth, latency |
| _____________ refers to the amount of data, instructions, and information that can travel over a communications channel | bandwidth |
| the time it takes a signal to travel from one location to another on a network is referred to as ________ | latency |
| ___________ refers to is an electrical disturbance that can degrade communications | noise |
| This kinds of cable consists of a single copper wire surrounded by at least three layers: an insulating material, a woven or braided metal, and a plastic outer coating? | coaxial |
| _____________ is a wireless transmission medium that distributes radio signals through the air over long distances, is slower and more susceptible to noise. | broadcast radio |
| the maximum transfer transmission rate for Bluetooth is 24 _____ | Mbps |
| ____________ are radio waves that provide a high-speed signal transmission, is an earth-based reflective dish that contains the antenna, transceivers, and other equipment necessary for communications | microwave |
| ___________ wireless transmission involves sending signals from one microwave station to another. | fixed wireless |
| A _________ device is used to initiate an instruction, transmit data, or information | sending |
| A _________ device that accepts the transmission of data, instructions, or information | receiving |
| __________ are used to define how data transmits across transmission media. | standards |
| __________ involves transferring funds electronically. | EFT, electronic fund transfer |
| ________ are a third-party business that provides additional services, such as EDI, secure data and information transfer, storage. | VAN |
| Your smartphone, digital camera, and printer are all part of a network in your workspace. This is referred to as a _________ | personal area network (PAN) |
| __________ is a set of wearable or implanted body sensors that turns the body into a human router | BAN |
| another term for servers that control access to the hardware, software, and other network resources | host |
| ___________servers include network servers and web servers. | dedicated servers |
| In a peer-to-peer network, each computer has ___________ responsibilities and capabilities, are simple, inexpensive networks, that allow each computer to store files on its own device and to share them. Requires special operating system | equal |
| ___________ network is another name for a peer-to-peer network. | filesharing |
| Networks that have a central device that controls data flows employs a ___________ network topology | star/host |
| The term used to describe a device connected to a network that has an IP address? | node |
| ___________ standards indicate that no central computer or device should control when data is transmitted | ethernet |
| Wireless headsets are likely to use __________ technology | blueTooth |
| _________ is a technology that tracks inventory for small businesses | UWB |
| The remote control likely uses ________ connective technologies. | IrDA |
| A tollbooth is likely to use ______ connective technologies. | RFID |
| Wi-Fi connections uses ___________ as the network standard | TCP/IP |
| When using Wi-Fi in open or outdoor areas free from interference, computers or devices should be within ____ feet of each other to be able to communicate. | 300 |
| 33 feet is the approximate distance most _______ devices can be from each other to communicate, without using additional equipment? | bluetooth |
| privacy advocates worry that this technology can destroy a person's anonymity | RFID |
| __________ contains dozens or hundreds of thin strands of glass or plastic that use light to transmit signals | fiber optic |
| _____ has the fastest maximum transfer transmission rate? | UWB |
| The "G" in 2G, 3 G and 4G refers to | generation |
| You want to use the UMB cellular transmission standard on your new mobile phone. Which standard will you use | 4G |
| In a networked environment, it is not possible to access data and information stored on another's computer in the network | false |
| An __________ essentially is a small version of the Internet that exists within an organization | intranet |
| A _____ usually is managed by a consortium of users or by a single network provider that sells the service to the users | MAN |
| When you log off from a P2P network, it is still possible for other's to access the shared hard drive | false |
| Star topologies are frequently used for WANs | false |
| _____ technologies are used to transmit data from device to device in one-way directions. | bus |
| In a ________ network, if the hub fails, the entire network is rendered inoperable until the hub is repaired | star |
| many network ______ are used to help move data around the internet. | standards |
| With ______ each packet contains data as well as the recipient (destination), origin (sender), and the sequence information used to reassemble the data at the destination. | tcp/ip |
| _________ offer mobile users the ability to connect to the Internet with their Wi-Fi enabled wireless computers and devices. | hot spots |
| Communications software usually is ________ with the operating system or communications devices. | bundled |
| With _____, the same telephone line that could carry only one computer signal now can carry three or more signals at once through the same line, using a technique called multiplexing | isdn |
| ADSL is ideal for Internet access because most users _______ more information than they ______ from the Internet. | download, upload |
| With ____ service, an optical terminal at your location receives the signals and transfers them to a router connected to a computer. | FTTP |
| Wireless access points have high-quality _______ for optimal signals. | antennas |
| One of the more widely used transmission media for network cabling and landline phone systems is _________ | twisted-pair cable. |
| In a fiber-optic cable, each strand, called an optical ____, is as thin as a human hair. | fiber |
| Fiber-optic cables have the capability of carrying significantly more signals than ________ . | twisted-wire pair |
| ___________ is a wireless transmission medium that sends signals using infrared light waves | Infrared (IR) |
| one or more computers act as a server and the other computers on the network request services from the server? | client/server |
| EFT stands for __________ | electronic funds transfer |
| device that initiates an instruction to transmit data, instructions, or information | sending device |
| another term for servers that control access to the hardware, software, and other network resources? | host |
| defines how a network uses close-range radio signals to communicate between two devices or objects equipped with this technology? | NFC |
| _________ is a communications device that connects multiple computers together and transmits data to its correct destination on a network | router |
| __________ is a simple, inexpensive network that typically connects fewer than 10 computers. | Peer-to-peer,p2p |
| is a modem that sends and receives digital data over and information to and from a digital line? | broadband |
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