Intro To Lan/wan Chapter 2

Front 1

______ are systems of end devices, intermediary devices, and the media connecting the devices, which provide the platform for the human network.

Back 1

Data networks

Front 2

The most widely-used networking models are ____ and _____.

Back 2

OSI and TCP/IP

Front 3

As it passes down the stack, data is A)_____ into pieces and B)______ with addresses and other labels. The process is reversed as the pieces are C)_____ and passed up the destination protocol stack.

Back 3

segmented, encapsulated, decapsulated

Front 4

What are the 7 layers of the OSI model?

Back 4

Physical, Data Link, Network, Transport, Session, Presentation, Application

Front 5

The ____ Layer of the OSI model sets standards for sending and receiving electrical signals between devices. Devices operating at this layer send and receive a stream of bits.

Back 5

Physical Layer (Layer 1)

Front 6

The Data Link Layer includes the ____ and the ____ layers

Back 6

MAC and LLC

Front 7

OSI layer that describes how data is routed across networks and on to the destination.

Back 7

Network Layer (Layer 3)

Front 8

Which layer does the following:
- Maintains addresses of neighboring routers
- Maintains list of known networks
-Determines the next network point data should be sent to.

Back 8

Network Layer (Layer 3)

Front 9

The _____ Layer uses port(socket) numbers to identify applications on the system, breaks packets into segments, and reassembles them on the receiving end

Back 9

Transport Layer (Layer 4)

Front 10

The _____ Layer integrates network functionality into the host operating system, and enables network services, including file, print, message, application, and database services.

Back 10

Application Layer (Layer 5)

Front 11

the Application layer specifies many important network services that are used on the internet, including: (5)
_____, _____, _____, _____, & _____.

Back 11

HTTP
Telnet
FTP
TFTP
SNMP

Front 12

_____ begins with a message, or information, that must be sent from one individual or device to another.

Back 12

Communication

Front 13

The three common elements of communication are ____, ____, and ____

Back 13

Message source/Sender
Destination/Receiver
Channel

Front 14

_____ are people, or electronic devices, that need to send a message to other individuals or devices.

Back 14

Message sources

Front 15

The ____ receives the message and interprets it.

Back 15

destination

Front 16

The ____ consists of the media that provides the pathway over which the message can travel from source to destination.

Back 16

Channel

Front 17

Division of the data stream into smaller pieces is called _____

Back 17

Segmentation

Front 18

Process where multiple digital data streams are combined into one signal

Back 18

Multiplexing

Front 19

The downside to using segmentation and multiplexing to transmit messages across a network

Back 19

The complexity of the process

Front 20

the physical elements or hardware of the network.

Back 20

Devices and media

Front 21

a laptop, a PC, a switch, or the cabling used to connect the devices are examples of _____

Back 21

hardware

Front 22

the communication programs, called software, that run on the networked devices.

Back 22

Services and processes

Front 23

_____ include many of the common network applications people use every day, like e-mail hosting services and web hosting services.

Back 23

services

Front 24

______ provide the functionality that directs and moves the messages through the network. _____ are less obvious to us but are critical to the operation of networks.

Back 24

Processes

Front 25

device such as a desktop used by an end user

Back 25

End Device

Front 26

Examples of End Devices

Back 26

Computers (workstations, laptops, servers), printers, VoIP phones, security cameras, PDAs

Front 27

In the context of a network, end devices are referred to as A)____. A B)_____ is either the source or destination of a message transmitted over the network.

Back 27

A)hosts
B)host device

Front 28

True or False:
In modern networks, a host can act as a client, a server, or both. Software installed on the host determines which role it plays on the network.

Back 28

True

Front 29

A computer system that accesses a service on another computer remotely be accessing the network.

Back 29

Client

Front 30

______ are hosts that have software installed that enables them to provide information and services, like e-mail or web pages, to other hosts on the network.

Back 30

Servers

Front 31

____ are hosts that have software installed that enables them to request and display the information obtained from the server.

Back 31

Clients

Front 32

connects directly to end user devices or provides end user routing to other networks

Back 32

intermediary devices

Front 33

examples of intermediary network devices

Back 33

hubs, switches, WAPs, routers, modems, firewalls

Front 34

True or False: The management of data as it flows through the network is a role of intermediary devices

Back 34

True

Front 35

Communication across a network is carried on a ____. The _____provides the channel over which the message travels from source to destination.

Back 35

Medium

Front 36

Modern networks primarily use three types of media to interconnect devices and to provide the pathway over which data can be transmitted. These media are:

Back 36

Metallic wires in cables (copper)
Glass/plastic fibers (fiber optic)
Wireless transmission

Front 37

True or False:
The signal encoding that must occur for the message to be transmitted is the same for each media type.

Back 37

False

Front 38

The process of transforming data from one form to another.

Back 38

Encoding

Front 39

Process where information from a source is converted to symbols to be communicated

Back 39

Line Encoding

Front 40

A)____ uses electrical impulses for transmission, B)____ uses light pulses, and C)____ uses electromagnetic patterns to transmit data.

Back 40

A) metallic wires
B) fiber optic
C) wireless

Front 41

Different types of network media have different features and benefits. Not all network media has the same characteristics and is appropriate for the same purpose. Criteria for choosing a network media are:

Back 41

distance, environment, amount of data carried and speed needed, and cost of media and installation

Front 42

An individual network usually spans a single geographical area, providing services and applications to people within a common organizational structure, such as a single business, campus or region. this type of network is a ____.

Back 42

LAN

Front 43

A ___ is usually administered by a single organization. The administrative control that governs the security and access control policies are enforced on the network level.

Back 43

LAN

Front 44

Individual organizations usually lease connections through a _____ network.

Back 44

telecommunications service provider's (TSP)

Front 45

connects LANs over geographically separated locations

Back 45

WAN

Front 46

True or False:
Although the organization maintains all of the policies and administration of the LANs at both ends of the connection, the policies within the communications service provider network are controlled by the TSP.

Back 46

True

Front 47

The most well-known and widely used publicly-accessible internetwork

Back 47

Internet

Front 48

a private connection of LANs and WANs that belongs to an organization, and is designed to be accessible only by the organization's members, employees, or others with authorization.

Back 48

Intranet

Front 49

Specialized ports on an internetworking device that connect to individual networks.

Back 49

Interface

Front 50

A connector or outlet on a networking device where the media is connected to a host or other networking device.

Back 50

Physical Port

Front 51

All communication, whether face-to-face or over a network, is governed by predetermined rules called _____

Back 51

Protocols

Front 52

A group of inter-related protocols that are necessary to perform a communication function is called a _____

Back 52

Protocol suite

Front 53

Networking protocol suites describe processes such as:

Back 53

format/structure of message, method networking devices share pathway information with other networks, how/when error and system messages are passed between devices, and setup/termination of data transfer sessions

Front 54

Individual protocols in a protocol suite may be A)____ and B)_____

Back 54

A)Vendor specific
B)Proprietary

Front 55

process or protocol that has been endorsed by the networking industry and ratified by a standards organization

Back 55

Standard

Front 56

common protocol that governs the way that a web server and a web client interact.

Back 56

Hypertext Transfer Protocol
(HTTP)

Front 57

transport protocol that manages the individual conversations between web servers and web clients

Back 57

Transmission Control Protocol (TCP)

Front 58

_____ divides HTTP messages into segments to send to the destination client, and is responsible for the size and rate at which messages are exchanged between the server and client

Back 58

TCP

Front 59

The most common internetwork protocol

Back 59

Internet Protocol (IP)

Front 60

takes segments, encapsulates them into packets, assigns addresses, and selecting the best path to the destination host

Back 60

Internet Protocol (IP)

Front 61

Network access protocols describe these two primary functions

Back 61

data link management and the physical transmission of data on the media

Front 62

_____ generally do not describe how to accomplish a particular function. By describing only what functions are required of a particular communication rule but not how they are to be carried out, the implementation of a particular ______ can be technology-independent.

Back 62

Protocol

Front 63

depicts the operation of the protocols occurring within each layer, as well as the interaction with the layers above and below it.

Back 63

layered model

Front 64

There are two basic types of networking models: _____models and ______models.

Back 64

A)Protocol
B)Reference

Front 65

provides a model that closely matches the structure of a particular protocol suite.

Back 65

protocol model

Front 66

provides a common reference for maintaining consistency within all types of network protocols and services.

Back 66

reference model

Front 67

most widely known internetwork reference model

Back 67

Open Systems Interconnection (OSI) model

Front 68

True or False:
designers are not required to communicate to the industry by relating their product or service to either the OSI model or the TCP/IP model, or to both

Back 68

False

Front 69

four layers of the TCP/IP model

Back 69

Application, Transport, Internet, Network Access

Front 70

The internet model is another name for the ____ model

Back 70

TCP/IP

Front 71

since the TCP/IP model is an ____, one company does not control the definition of the model

Back 71

open standard

Front 72

TCP/IP layer representing data to the user plus encoding and dialog control

Back 72

Application

Front 73

TCP/IP layer that supports communication between diverse devices across diverse networks

Back 73

Transport

Front 74

TCP/IP layer that determines the best path through the network

Back 74

Internet

Front 75

TCP/IP layer that controls the hardware devices and media that make up the network

Back 75

Network Access

Front 76

____ - PDU at Application layer
____ - PDU at Transport layer
____ - PDU at Internetwork layer
____ - PDU at Network Access layer
____ - PDU when physically transmitting data over medium

Back 76

Data, Segments, Packets, Frame, Bits

Front 77

form that a piece of data takes at any layer

Back 77

Protocol Data Unit (PDU)

Front 78

Application layer of the TCP/IP model is the same as which layers in OSI

Back 78

Application, Presentation, Session

Front 79

Which 2 layers of OSI correspond to Transport and Internet of the TCP/IP model

Back 79

Transport and Network

Front 80

Network Access in TCP/IP is the same as these 2 OSI layers

Back 80

Data link and Physical

Front 81

TCP and UDP provide the necessary functions to this OSI model

Back 81

Transport