Network+ Section 1.1 Network Overview Flashcards
Testout 2009 Network+
What is a Peer-to-peer network?
In a peer-to-peer network, each host can provide network resources to other hosts or access resources located on other hosts, and each host is in charge of controlling access to those resources. Advantages of peer to peer networks include:
What are the advantages of a Peer to Peer?
- Easy implementation - Inexpensive
What are the disadvantages of a Peer to Peer?
Difficult to expand (not scalable) Difficult to support Lack centralized control No centralized storage
What is a Client/server network?
In a client/server network, hosts have specific roles. For example, some hosts are assigned server roles which allow them to provide network resources to other hosts. Other hosts are assigned client roles which allows them to consume network resources.
What are the advantages of a Client/Server network?
Easily expanded (scalable) Easy support Centralized services Easy to backup
What are the disadvantages of a Client/Server network?
Server operating systems are expensive Requires extensive advanced planning
What is a Local Area Network (LAN)?
a network in a small geographic area, like in an office.
What is a Wide Area Network (WAN)?
A wide area network (WAN) is a group of LANs that are geographically isolated but connected to form a large internetwork
What is a Network?
The term network often describes a network under a single organization with control over the entire network. This could be a local area network at a single location, or a wide area network used by a single business or organization. If, for example, two companies connected their internal networks to share data, you could call it one network. In reality, however, it is two networks, because each network is managed by a different company.
What is a Subnet?
A subnet is a portion of a network with a common network address. - All devices on the subnet share the same network address, but have unique host addresses. - Each subnet in a larger network has a unique subnet address. - Devices connected through hubs or switches are on the same subnet; routers are used to connect multiple subnets.
What is an Internetwork?
A network that includes geographically disperse (WAN) connections that connect multiple LANs is often called an internetwork. Additionally, connecting two networks under different management is a form of internetworking, as data must travel between two networks.
What is an Internet?
The Internet is a large, world-wide, public network. The network is public because virtually anyone can connect to the network, and users or organizations make services freely available on the Internet. - Users and organizations connect to the Internet through an Internet service provider (ISP). - The Internet uses a set of communication protocols for providing services called TCP/IP. - Individuals and organizations can make services (such as a Web site) available to other users on the Internet.
What is an Intranet?
An intranet is a private network that uses Internet technologies. Services on an intranet are only available to hosts that are connected to the private network. For example, your company might have a Web site that only users who are connected to the private network can access.
What is an Extranet?
An extranet is a private network that uses Internet technologies, but whose resources are made available to external (but trusted) users. For example, you might create a Web site on a private network that only users from a partner company can access.
What is a “NOS”?
(Network Operation System) The software that runs on a server and enables the server to manage data, users, groups, security, applications, and other networking functions
