... for Security+ StudyGuide
and DVD Training System, (ISBN: 978-1-931836-72-2, Syngress), lead
author and technical editor for Network+ StudyGuide & Practice Exams:
Exam N10- 003, (ISBN: ... network
technician and to pass the CompTIA Network+ exam.
We cover network models such as centralized and decentralized, the
differences between a local area network (LAN) and a wide area network ... common source for networking professionals to get
the definitive source on networking knowledge. So let us start from the very
beginning, what exactly is a network anyway?
WHAT IS A NETWORK?
Even...
... popularity as a network OS, it was widely used on
corporate and government networks.
Logical Networking Topologies 15
Network modeling is important for getting the first leg of network
design ... decentralized?
Centralized
When a centralized network model is used, a network s resources are centrally
located and administered. This approach allows network administrators to
have better access ... over
the network will take place. As we approach 2010, it’s interesting to look
back on the last decade of networking … how it has evolved and where we
will wind up next.
LOGICAL NETWORKING...
... things are, and how the network is
configured.
Although networks are often unique to one another, the topology of each
network will share characteristics with one another. Networks will either ...
the servers of years past, making peer-to-peer networks a viable solution for
smaller networks.
In a peer-to-peer network, computers on the network act as equals, with
each workstation providing ... network through one control system. For exam-
ple, on networks using Windows 2000 Server or 2003
Server, user accounts and information are stored in
Active Directory, while Novell NetWare networks...
... dealing with the Network+ exam shortly before
taking the exam itself. A fast approach to reviewing is to look over the Exam Watch
information, Summary of Exam Objectives, and Exam Objectives ... scope of a network, different terms have been created to classify these dif-
ferent network types. The types of networks that could be created include:
Local area network
Wide area network
Metropolitan ... area network
Metropolitan area network
Storage area network
Personal area network
Campus area network
LAN and WAN
LANs and WANs were the first types of networks to be classified by the...
... infor-
mation. The network is internetworked with a network belonging
to a subsidiary of the company. The subsidiary’s network uses
Apple computers, and uses AppleTalk as a network protocol. ... Office D
CHAPTER 1: Network Fundamentals 36
SUMMARY OF EXAM OBJECTIVES
In this chapter, we discussed the fundamentals of networking, including
what defines a network, and how networks came to be. ... define your network and will affect a wide variety of elements
including security, media, and other features that make up your network
as a whole.
EXAM OBJECTIVES FAST TRACK
What Is a Network?
A...
... the network card or another device, it provides
a connection between the device and the physical media that carries data
across your network.
MEDIA ISSUES
As with anything dealing with networks, ... access
and travel across that network. Connectors attached to the ends of the cables
are plugged into or coupled in some way with a network card or other device
on your network. In doing so, a physical ... of a cable is to carry data across a network. A network card
passes an electronic signal onto a cable and a connector is used to connect
the cable to the network card or other device to the...
... using it.
Network Monitors and Protocol Analyzers
Network monitors and protocol analyzers monitor traffic on the network
and display the packets that have been transmitted across the network. ... transmitted across the network, the
problem may lie with that particular packet type. Because the network moni-
tor enables you to view the contents of all packets on the network, in many
cases, ... cabling.
Troubleshooting
Experienced network administrators know that cabling is one of the most
common causes of network failure. For this reason, you should check cabling
early in the network troubleshooting...
... topology of
coax networks. A coax network uses a bus topology,
which basically means that all of the network devices
are connected in a linear fashion. Each device on the
network completes ...
attack on this type of network by cutting the cable or
disconnecting a device. If communication is not able
to flow completely up and down a coax network, the
entire network is brought down. ... the network as a
whole. Because of this, if any device is removed from
the network or if there is a break anywhere in the cable,
the circuit is broken and the entire segments of the
network...
... into the types
of cabling you’ll find on networks and the Network exam. As we’ve
discussed, there are three types of physical media that can be used on
a network: coaxial cable, twisted-pair cable, ... with networking, or often forgotten. Nevertheless,
elements such as wireless technologies, FireWire, and transceivers are impor-
tant to networking. Such media is not only covered on the Network ... cladding. A cable may contain
FIGURE 2.10 Coaxial Cable.
Exam Warning
Although coax is not as commonly used as it used to be, the Networkexam expects you
to understand what it is and how it works....
... m
B. 185 m
C. 500 m
D. 2 km
Examine the illustration shown in Figure 2.127. . Your network
is a 10Base2 network, and it uses these connectors to attach to
the network. Which of the following ... are designing a 10Base2 network. In creating this network, what 6.
distance limitation will you be facing when installing the cabling?
Exam Objectives Fast Track 89
EXAM OBJECTIVES FAST TRACK
Cabling ... employee. While examining
the server, you find that a small battery-powered motor has been
placed and is running next to the server’s network connection.
What is causing the network problem?
A....
... different network segments.
Exam Warning
Bridges operate at the data link layer of the OSI model and use physical addressing to
join several networks into a single network efficiently.
CHAPTER 2: Network ...
rarely used on today’s networks. In discussing these devices, we’ll tell you
about their purpose, features, and functions on a network.
HEAD OF THE CLASS…
OSI and Network Devices
Network devices can ... controlling
traffic and applying security features.
NETWORK DEVICES
Network devices are components of a network that are required if the
network is to grow, function, or provide certain functionality....
... CHAPTER 3: Network Devices 106
HEAD OF THE CLASS…
What Do I Need to Know About Token Ring
for the Network+ Exam?
Although an aging technology, Token Ring is still sup-
ported on a great many networks. ... another, for example, as in the scenario men-
tioned earlier when the router was used to connect the
two dissimilar networks together. Figure 3.2 shows an
example of this in action.
In our example, ... Be careful.
FIGURE 3.2 Two Networking Technologies Connected via a Windows Server 2008 Router.
Network Devices 107
Concepts of Convergence
Over the years, a number of network devices have become...
... computer
on the network. For these computers to communicate, however, a device is
needed to guide the TCP/IP network traffic to its destination. This is where
routers come in.
The network layer, ...
remote network, add the path you would like the packet to take to
Table 3.3
Information Contained in a Routing Table
Destination Adjacent Router Hops
Network 1 Router A 1
Network 1 Router B 2
Network ... antivirus software.
Exam Warning
Routers operate at the network layer of the OSI model. The exam will deal with questions
regarding both routers and the OSI model.
CHAPTER 3: Network Devices 118
an...