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Exam 1: Introducing Networks

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Question 21

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Two computers connected by a wire cable form a network.

A) True
B) False

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Question 22

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

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Question 23

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Computers must use a common protocol to communicate properly.

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

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

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

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

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

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.

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

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

Why do we use 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 the intermediate stage between a LAN and a WAN.

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

What are virtual private networks?

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

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

What are the advantages of a layered networking model?

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