Chapter 1 T/F

False

A local area network (LAN) connects other LANs and backbone networks (BNs) located in different areas to each other and to wide area networks in a span from 3 to 30 miles.

True

In the OSI model, the application layer provides a set of utilities for applications and is the end user's access to the network.

True

Telecommunications is the transmission of voice and video as well as data and usually implies transmitting a longer distance than in data communication network.

False

The OSI model is currently the most widely implemented network model used to develop and build networks of any size, including the Internet itself.

False

Ethernet is an example of a network layer protocol.

True

A car manufacturer may give access to certain portions of its network to some of its suppliers via the Internet. This is an example of extranet.

False

An intranet is a LAN that uses Internet technologies and is publicly available to people outside an organization.

True

Data communication standards enable each layer in sending computer to communicate with its corresponding layer in the receiving computer.

True

Due to advances in high speed communication networks, the information lag, or the time it takes for information to be disseminated around the world, has been significantly shortened.

True

Its not uncommon for companies to end up spending more money on network management and security tasks than they do on the actual computer equipment itself.

False

The application layer is the seventh layer of the internet model and specifies the type of connection and the electrical signal that passes through it.

True

The network layer performs the same functions in both the OSI and internet models and is responsible for routing messages from the source computer to the destination computer.

True

The transport layer in the Internet model, TCP, is responsible for breaking large files received from the application layer into smaller messages and opening a connection to a server for transferring them.