Intro To Networking Chapter 10 Terms

Question 1

internetworks and WANs can be described as

Answer 1

two or more connected LANs

Question 2

OSI model Data Link Layer and Physical Layer are also know as

Answer 2

WAN Technologies

Question 3

a device that allows a computer (which works with digital information) to communicate over lines that use analog signals.

Answer 3

traditional modem

Question 4

When A modem converts a digital signal from a computer into an analog signal to be transmitted, this process is called

Answer 4

modulation

Question 5

a series of binary 1s and 0s represented by some type of signal that has two possible states

Answer 5

digital signal

Question 6

is a signal that varies over time continually and smoothly

Answer 6

analog signal

Question 7

a device (actually two devices that are usually combined) that creates a digital connection between a LAN device, such as a router, and the WAN link from the service provider.

Answer 7

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

Question 8

A device that is responsible for getting packets from one network to another

Answer 8

Router

Question 9

creates a temporary dedicated connection between the sender and receiver on demand.

Answer 9

circuit-switched WAN

Question 10

a digital communication technology developed in 1984 to replace the analog phone system

Answer 10

Integrated Services Digital Network (ISDN)

Question 11

ISDN format that consists of two 64-Kbps B-channels and a 16 Kbps D-channel; BRI is generally used for remote connections. See also Integrated Services Digital Network (ISDN).

Answer 11

Basic Rate Interface (BRI)

Question 12

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

Answer 12

Primary Rate Interface (PRI

Question 13

provides a dedicated point-to-point connection from the customer’s LAN through the provider’s network and to the destination network. It provides permanent, secure, and dedicated bandwidth that’s limited only by the provider’s technology and how much the customer is willing to spend

Answer 13

Leased Line

Question 14

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

Answer 14

T-carrier lines

Question 15

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

Answer 15

time division multiplexing (TDM)

Question 16

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

Answer 16

Multiplexing

Question 17

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

Answer 17

Synchronous Optical Network (SONET) or Synchronous Digital Hierarchy (SDH)

Question 18

A type of WAN network in which data is transmitted in frames or packets, 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.

Answer 18

packet-switched WAN

Question 19

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

Answer 19

virtual circuit

Question 20

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

Answer 20

Switched virtual circuits (SVCs)

Question 21

Pathways between two communication points that are established as permanent logical connections; therefore, the pathway exists even when it’s not in use.

Answer 21

Permanent virtual circuits (PVCs)

Question 22

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

Answer 22

X.25

Question 23

A PVC packet-switching technology that offers WAN communication over a fast, reliable, digital link. Throughput is usually improved because error checking is done on endpoint devices instead of on the digital link

Answer 23

Frame relay

Question 24

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

Answer 24

Asynchronous Transfer Mode (ATM)

Question 25

Metropolitan Ethernet (Metro Ethernet or just MetroE) and Ethernet over MPLS (EoMPLS).

Answer 25

Ethernet WAN Technologies

Question 26

The connection between a WAN’s demarcation point and the central office (CO); it’s also called the “last mile

Answer 26

local loop

Question 27

defines the Worldwide Interoperability for Microwave Access (WiMAX) standard

Answer 27

802.16 WiMAX—IEEE 802.16

Question 28

software to make a remote connection.

Answer 28

Dial-Up Networking (DUN)

Question 29

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

Answer 29

Point-to-Point Protocol (PPP)

Question 30

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

Answer 30

Cloud computing