What is a computer networking model in which data applications and processing power are managed by servers on the internet?

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Term

Definition

A signal, represented by a sine wave, that varies over time continually and
smoothly.

Term

Asynchronous Transfer Mode (ATM)

Definition

A high-speed, cell-based packet-switching technologydesigned for both LAN and WAN use; uses connection-oriented switches to allow senders
and receivers to communicate over a network.

Term

Basic Rate Interface (BRI)

Definition

An ISDN format that consists of two 64-Kbps B-channels and a16-Kbps D channel; generally used for remote connections. See also Integrated Services
Digital Network (ISDN).

Term

channel service unit/data service unit (CSU/DSU)

Definition

A device that creates a digital connection
between a LAN device, such as a router, and the WAN link from the service provider.

Term

Definition

A type of WAN connection in which a temporary dedicated
connection is established between sender and receiver on demand.

Term

Definition

A networking model in which data, applications, and processing powerare managed by servers on the Internet, and users of these resources pay for what they use
rather than for the equipment and software needed to provide resources.

Term

Committed Information Rate (CIR)

Definition

A guaranteed minimum transmission rate offered by the
service provider

Term

Customer premises equipment (CPE)

Definition

The equipment at the customer site that’s usually the
responsibility of the customer.

Term

data circuit-terminating equipment (DCE)

Definition

The device that sends data to (and receives datafrom) the last mile; usually a CSU/DSU or modem. See also channel service unit/data service
unit (CSU/DSU) and last mile.

Term

data terminal equipment (DTE)

Definition

The device that passes data from the customer LAN to the
DCE; usually a router. See also data circuit-terminating equipment (DCE).

Term

Definition

The point at which the CPE ends and the provider’s responsibility
begins. See also customer premises equipment (CPE).

Term

Definition

The Windows software component (beginning with Windows95) for setting up a connection to an RRAS server or connecting computers to ISPs for
dial-up Internet access.

Term

Definition

Represented as a square wave, a signal that uses binary 1s and 0s to represent
two possible states.

Term

Definition

The term used to describe a T-carrier line in which portions are dedicated for
different purposes. See also T-carrier lines.

Term

Definition

A PVC packet-switching technology that offers WAN communication over afast, reliable, digital link. Throughput is usually improved because error checking is done on
endpoint devices instead of on the digital link. See also permanent virtual circuits (PVCs).

Term

Infrastructure as a Service

Definition

A category of cloud computing in which a company can use aprovider’s storage or virtual servers as its needs demand; also called infrastructure as a
service (IaaS).

Term

Integrated Services Digital Network (ISDN)

Definition

A digital WAN technology developed to replacethe analog phone system. It defines communication channels of 64 Kbps and is most often
used by OSHO users.

Term

Definition

The connection between a WAN’s demarcation point and the central office (CO);
also called the local loop. See also demarcation point.

Term

Definition

A device that converts a sending computer’s digital signals to analog signals fortransmission over phone lines and then converts analog signals to digital signals for the
receiving computer.

Term

Definition

A technology that supports simultaneous communication links over the sameset of cables, so data transmissions from several sources can be combined and delivered over
a single cable.

Term

Multiprotocol Label Switching (MPLS)

Definition

A highly scalable, flexible WAN technologythat works with any Network-layer protocol and is independent of the Data Link layertechnology; used exclusively in IP networks. It creates a connection-oriented virtual circuit,
using labels assigned to each packet that make it unnecessary to view packet contents.

Term

Definition

A type of WAN network in which data is transmitted in frames orpackets, and each packet is transmitted through the provider’s network independently.Instead of having a dedicated circuit over which data travels, a provider’s customers share
the bandwidth.

Term

permanent virtual circuits (PVCs)

Definition

Pathways between two communication points that areestablished as permanent logical connections; therefore, the pathway exists even when it’s
not in use. See also virtual circuit.

Term

Platform as a Service (PaaS)

Definition

A category of cloud computing in which a customer develops applicationswith the service provider’s development tools and infrastructure; also called platform as aservice (PaaS). After applications are developed, they can be delivered to the customer’s
users from the provider’s servers.

Term

Point-to-Point Protocol (PPP)

Definition

A remote access protocol that supports many protocols and is
used to carry data over a variety of network connections.

Term

Primary Rate Interface (PRI)

Definition

An ISDN format that consists of 23 64-Kbps B-channels and
one 64-Kbps D-channel. See also Integrated Services Digital Network (ISDN).

Term

Definition

Cloud services that a company delivers to it's own employees

Term

Definition

Cloud services delivered by a third party provider.

Term

Definition

A type of connector for terminating a T1 line that provides diagnostic testing for troubleshooting the connection.

Term

Software as a Service (SaaS)

Definition

A category of cloud computing in which the customer pays for the use of applications that run on a service providers network; also called 'hosted applications'

Term

switched virtual circuits (SVCs)

Definition

A communication circuit that’s established when needed
and then terminated when the transmission is completed. See also virtual circuit.

Term

Synchronous Optical Network (SONET)

Definition

A flexible, highly fault-tolerant technology that cancarry signals of different capacities over a fiber-optic network at high speeds. It definesoptical carrier (OC) levels for incrementally increasing data rates, and SONET networks can
be arranged in a variety of physical topologies.

Term

Definition

Communication lines that use one pair of wires for transmitting data andanother pair for receiving data. They use the TDM signaling method, making it possible toextract any number of channels for a particular purpose. See also time division multiplexing
(TDM).

Term

time division multiplexing (TDM)

Definition

A signaling method that allocates a time slot for eachchannel, making it possible to transmit multiple streams, or channels, of data on a single
physical medium.

Term

Definition

A logical connection created between two devices in a shared network, with
bandwidth allocated for a specific transmission pathway through the network.

Term

Definition

A packet-switching technology that provides an interface between public packetswitchingnetworks and their customers; it has the advantage of running effectively overolder copper phone lines. X.25 networks are SVC networks, meaning they create the best
available pathway at the time of transmission. See also switched virtual circuits (SVCs).

Term

In which of the following areas does a WAN differ from an internetwork? (Choose all that apply.)a. WANs use service providers for the network connectionb. WANs can't use transport Network layer protocolsc. WANs use serial communication technologies that can span miles
d. WANs don't use routers

Definition

Term

Which of the following is a device used to make WAN connections? (Choose all that apply.)a. 10BaseT Hubb. CSU/DSUc. Router
d. Ethernet Repeater

Definition

Term

Which of the following best describes a digital signal?a. A signal that varies over time continually and smoothlyb. A signal whose states vary much like a lamp controlled by a dimmer switch.c. A channel service unit
d. A series of binary values

Definition

d. A series of binary values

Term

For what purpose is a CSU/DSU used? a. Modulates a digital signal into an analog signalb. Creates a digital connection between a LAN device and the WAN linkc. Routes packets from the LAN to the WAN
d. Creates a WAN connection over the public switched telephone network

Definition

Creates a digital connection between a LAN device and the WAN link

Term

Which of the following is a common WAN connection method? (Choose all that apply.)a. Ciruit switchedb. Packet leasedc. VPN over POTS
d. Packet Switched

Definition

Term

Which of the following is true about ISDN?a. It uses a modem to modulate/demodulate the signalb. Its BRI format consists of two B-channels and one D-channelc. It's PRI format provides bandwidth up to 128Kbps
d. It uses a termianl adapter to connect to the network

Definition

b. Its BRI format consists of two B-channels and one D-channel

Term

Which of the following is a typical situation in which leased lines should be considered? (Choose all that apply.)a. Occasional Use of the WAN is neededb. 24/7 access is requiredc. Fast upstream and downstream communications are needed
d. You want to pay only for the bandwidth you use

Definition

Term

Which of the following combines several communication streams into a single faster communication stream?a. Multiplexingb. Demultiplexingc. DSU
d. CSU

Definition

Term

Which physical topology does SONET readily support? (Choose all that apply.)a. Point-to-pointb. Starc. Ring
d. Bus

Definition

Term

Which of the following technologies uses packet-switching technologies? (Choose all that apply.)a. ISDNb. Frame Relayc. T1
d. X.25

Definition

Term

Which of the following technologies provides permanent virtual circuits? (Choose all that apply.)a. PSTNb. Frame Relayc. X.25
d. ISDN

Definition

Term

Which technology uses 53-byte cells?a. POTSb. ATMc. Frame Relay
d. X.25

Definition

Term

To maintain security, WAN connections over the Internet should use which of the following?a. BRIb. LANEc. OC-3
d. VPN

Definition

Term

What type of device is required to connect to a dedicated digital communication line?a. modemb. NICc. CSU/DSU
d. LANE

Definition

Term

Which term best describes the place in a WAN connection where the customer's responsibility ends and the provider's responsibility begins?a. Data circuit terminating equipmentb. Demarcation Pointc. CPE
d. Central Office

Definition

Term

Which of the following places data on the local loop?a. DCEb. DTEc. Router
d. CPE

Definition

Term

Which of the following is the equipment at the customer site that's the responsibility of the customer?a. DTEb. DCEc. Demarcation Point
d. CPE

Definition

Term

Which of the following is a VPN protocol supported by RRAS? (Choose all that apply.)Which of the following is a VPN protocol supported by RRAS? (Choose all that apply.) a. PPTPb. L2TPc. HTTP
d. SSTP

Definition

Term

Which of the following is a component of the PPP protocol? (Choose all that apply.)a. Link Control Protocolb. NCPc. VPN
d. RDP

Definition

Term

Which of the following can best be described as developing applications by using a service provider's development tools and infrastructure?a. Hosted applicationsb. Hosted networkingc. Hosted platforms
d. Hosted infrastructure

Definition

Term

Which wireless WAN technology has a standard for fixed and mobile devices?a. WiMAXb. LTEc. Satellite
d. LTE-Advanced

Definition

Term

Which wireless WAN technology might not be suitable for voice applications because of latency?a. WiMAXb. LTEc. Satellite
d. LTE-Advanced

Definition

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