Exam 1: Introducing Networks

What are virtual private networks?

The ____ sublayer of the Data Link layer defines the media access method and provides a unique identifier for the network card.

The term ____ refers to a series of storage devices, such as tapes, hard drives, and CDs, that are networked together to provide very fast data storage for a network or subnetwork.

Computers must use a common protocol to communicate properly.

The term ____ refers to the intermediate stage between a LAN and a WAN.

The ____ is information that is used to determine whether data was corrupted during transmission.

The term computer network, or simply ____________________, refers to the connection of two or more computers by some type of medium.

What are the advantages of a layered networking model?

A(n) ____________________ is a device that allows a computer or other device to connect to a network through the media.

In 1954, the International Organization for Standardization (ISO) presented the Open Systems Interconnection (OSI) model.

____ networks have computers that are servers and computers that act as clients to those servers.

The term ____ refers to the wire cabling, such as coaxial or the more commonly used twisted-pair, that form the connections in most networks.

____ protocols, such as User Datagram Protocol (UDP), do not require an ACK.

Why do we use networks?

A ____ is contained within a company or department and located in a single geographic area, usually a building or part of a building.

Many LANs and WANs contain several segments. Dividing a network into segments reduces performance.

As the layers pass the data through the protocol stack, the addition of a header and/or trailer is called ____________________.

The protocols at the Network layer allow computers to route packets to remote networks using a ____ address.

The part of the company's network that allows access to nonemployees is called the ____, which is accessed over or through the Internet.

Two computers connected by a wire cable form a network.