Chapter 1

Question 1

network

Answer 1

A network is a group of computers and possibly other devices (ex. printers) connected by some type of transmission media (ex. wire, fiber optic, wireless)

Question 2

abilities of a network

Answer 2

Networks are mechanisms for sharing resources

Networks allow multiple users and/or applications to share a common set of data

Networks can also be used to manage resources (install software, resolve problems, etc.) from a central location

Question 3

resources

Answer 3

Devices (ex. printers or disk drives), data and programs accessed via a network

Question 4

stand-alone computer

Answer 4

When a computer IS NOT attached to a network, it is known as a stand-alone computer

Question 5

local computer

Answer 5

Local computer is the computer you are working on

Question 6

remote computer (remote device)

Answer 6

Remote computer (or remote device) is the computer or device you are accessing via the network

Question 7

peer-to-peer network (P2P Network)

Answer 7

A peer-to-peer network (P2P network) is a network in which computers can communicate with each other but there is no centralized authority to manage the network

Question 8

rights

Answer 8

Rights: what a user can and cannot do

Question 9

permissions

Answer 9

Permissions: what resources a user can access and what the user can do with these resources

Question 10

issues with security on a p2p network

Answer 10

Each operating system can (and in many cases does) have different security capabilities and features

Since security is implemented on each computer, then the potential exists for inconsistencies on how the security is implemented

Question 11

advantages of p2p network

Answer 11

Easy to configure (if the network is small – 5 or less computers)

Less expensive then Client/Server based networks (see next slide)

Question 12

diadvantages of p2p network

Answer 12

Becomes difficult to manage as the network grows

Difficult to fully secure due to variations in capabilities of various O/S and inconsistencies in how security is implemented

Not considered to be highly scalable due to technical limitations and problems relating to managing each computer individually

Limited application support – many network applications do not support the use of a peer-to-peer network

Question 13

primary uses of p2p networks

Answer 13

Home or small office networks

Question 14

microsoft terms for p2p networks

Answer 14

workgroup and homegroup

Question 15

client server network

Answer 15

A client/server network (not the same as client/server application) is a network in which one or more computers (network servers) perform the network management functions for all computers on the network

Question 16

Network operating system (NOS)

Answer 16

Network servers utilize a special operating system known as a Network Operating System or NOS that is capable of managing networks

Question 17

network clients

Answer 17

Computers that are attached to a client/server based network but DO NOT provide network management functions are known as network clients.

Question 18

workstations

Answer 18

Network client

Workstations (personnel computers or notebook computers) running operating systems such as XP or Vista

Question 19

member servers

Answer 19

Network client

Member servers are computers that provide services via a network (ex. database servers or web servers) but DO NOT perform network management functions

Question 20

client operating system

Answer 20

Network clients have their own operating system known as the client operating system

The client operating system manages the operation of the client (ex. starting programs, allocating memory and accessing disk drives on the client) and interfaces with the network operating system for network operations

Windows XP and Windows 7 are examples of client O/S in Windows

Windows Server is also a client operating system when it is running on a computer that is not a network server (a server that is not performing network management functions)

Question 21

network servers

Answer 21

Not all servers of a client/server based network are network servers; servers that do not manage network operations ARE NOT network servers and DO NOT CONTAIN network operating systems

Network Servers are responsible for network management and utilize a common network security database that contains security information (accounts, user names, passwords, rights, permissions, etc. ) for the entire network

Question 22

advantages of a server based network

Answer 22

Higher level of security

Highly scalable due to (1) use of a common database to store network management information and (2) ability of network operating system software to support large complex networks

Network operating system is programmed to provide a more robust set of security features than other operating systems

Security is more consistent across the entire network since a single security structure (as implemented in the Network Server and NOS) applies to the entire network

Supports a wider range of network based applications due to the ability of NOS to provide more extensive support to these applications

Question 23

disadvantages of client server based network

Answer 23

Cost of the hardware (network server) and software (network operating system)

Complex to install and maintain

Specialized expertise is required to manage client/server based networks

Question 24

microsoft term for client server based networks

Answer 24

domain based networks

Question 25

client processing based application

Answer 25

In a client processing based application, responsibility for processing the data resides with the client

Question 26

server processing based application

Answer 26

In a server processing based application, responsibility for

processing the data resides with the server

Question 27

Local Area Network (LAN)

Answer 27

Local area network (LAN) is confined to a relatively small area

The key issue in relation to a LAN is what is a relatively small area? If all of the locations connected via a LAN is in the same building or in a series of buildings on the same private property
(example a college campus), then all of these locations would be on the same LAN.

The issue of what is a LAN is not as clear if the locations in the network are separated by property that is not owned by the organization. In most areas, organizations cannot setup LANs that cross property that the organization does not own. In this situation, the network would actually be a wide area
network.

LANs are generally not subject to
government regulations

Question 28

Wide Are Network (WAN)

Answer 28

Wide area network (WAN) spans a large area

The determining factor as to whether or not a network is a LAN or a WAN is whether or not the organization can provide its own connection between the location

If an organization is not legally able to connect two locations then the connection between the locations must be provided by a WAN vendor who is authorized to provide these connections

Government regulations at the federal and state levels give organizations such as ATT and Verizon the ability to provide WAN services to customers