Chapter 6 Flashcards
(25 cards)
What is the difference between LAN and WAN?
Lan s were introduced to conect computers in a single office. WAN expande the LANs to include networks outside the local network. p.265
What is a charachteristic of WPAN?
It is based on bluetoooth. p.267
Define MAN
It is for networks larger than LAN but confined to a relatively small geographical area. p. 268
When you are looking at devices or resouces avialable on a network what types of components should you be aware of?
Servers, Clients/workstations and resources. p.268
Define file servers
Servers that provide files to the users on the network. p.269
Define print servers
Servers that host printing services for users. p269
Define dedicated servers. ie HTTP server. ALl it does is hand out IP addresses to people in network.
A server assigned to provide specific applications or services for the network. p. 269
Define non-dedicated server ie. DNS, ADDS, Web server.
A server assigned to provide one or more network services and local access. It is more flexible in its day to day use than a dedicated server. p.270
Define workstations
Computers on which the network users do their work, performing activiteis such as workd processing, database design,, graphic design, email and other personal tasks. p. 270
What differentiates a workstation from a server?
What really differentiates a sworkstation from a server is what operating system it has installed and what role it plays on the network. If it has Windows server it is probally a sserver, If windows 7 it can be both a client on the network and nondedicated server (ie if you share a printer on a network) p.271
What are some important resources that can be used on the network?
Printers and other peripherals, Disk storage and file access, and applications. p. 271
What are some advantages of using a network?
It gives users more storage space to store files, This frees up disk space on client computers. Also, applications (programs) no longer need to be on every computer in the office. Is the server is capable of handling the overhead an application requires. The application can be used by the workstations through a network connection. p. 272
What does a network operating system do?
Networks use a NOS to control the communication with resouces and the flow of data across the network. (Windows server, linex etc) It functions like a disk operating system for a PC. p. 272
What are some considerations in deciding what type of resource model is needed? i.e. peer to peer, client service resource model.
The size of the organization
How much security the company requires
What software or hardware does the resource require
How much administration does it need
How much will it cost
Will this resource meet the needs of the orgainzation today and in the future
Will additional training be needed. p. 273
Describe peer to peer network
They act as both ser vie providers and service requestors. They are also referred to as workgroups. p.273
Describe Client-Server Resource Model
It is used for larger networks that need more secure environment and contralized control . Theyre is one or more dedicated centeralized server. All administrative functions and resource sharing are performed from this point. p. 274
What are the 5 Network Topologies?
Bus Star Ring Mesh Hybrid p.275
Describe bus topology
A cable that runs to every workstation p. 276
Describe star topology
Branches each detwork device off a central device called a hub making it easy to add a new workstation. If a workstation goes down it does not effect the others. But if the central device goes down it is a single point of failure. p.276
Describe ring topology
Each computer connects to two other computers joining them in a circle and creating a unidirectional pathe where messages move from workstation to workstation. p. 277
Describe Mesh topology
Each devices is conected to every other device. If you have 5 computeres use 10 cables. Mesh is used in WANs to connect multple sites acreoss WAN links. It uses routers to search multiple routes through thte mesh and determine the best path. It becomes inefficient with 5 or more entities because of the number of connections. p. 279
Describe Hybrid Topology
A mix of other topologies. p. 279
What does OSI stand for?
The International Organization for Stnadardization. p. 280
What are the 7 layers of OSI?
Physical (Hubs) Data Link- (Bridges) Network- Routers (3) Transport- Session- Presentation- Application p. 279 -
