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Exam 9: Network Organization Concepts

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Question 1

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A ____ is a device and software used to connect two or more local area networks or systems that use different protocols; it translates one network's protocol into another,resolving hardware and software incompatibilities.

A) router
B) gateway
C) bridge
D) tree

E) All of the above
F) A) and B)

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Question 2

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In the ____ path-selection approach,the destination and sequence number of a packet are added to the information uniquely identifying the message to which the packet belongs; each packet is then handled independently and a route is selected as each packet is accepted into the network.

A) physical circuit
B) datagram
C) telegram
D) virtual circuit

E) A) and D)
F) B) and D)

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Question 3

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Addressing protocols are normally unrelated to the network topology and geographic location of each site.

Circuit switching is a communication model in which a dedicated communication path is established between two hosts.

In the OSI transport protocol model,Layer Seven,the ____ layer,provides the interface to users and is responsible for formatting user data before passing it to lower layers for transmission to a remote host.

Which characteristic is true of packet switching?

A ____ includes information technology that operates within a radius of approximately 10 meters of an individual and is centered around that one person.

The Transmission Control Protocol/Internet Protocol (TCP/IP)reference model is the basis for Internet communications and is the most widely used network layer protocol today.

The tree topology is a collection of rings.

When deciding which network topology configuration to use,designers should keep in mind four criteria: ____.

Bridging between two homogeneous networks occurs at Layer 2 of the OSI transport protocol model,the data link layer.

Ethernet is the most widely known CSMA/CD protocol.

When using a ring topology,a ____ can be used to connect to another network that uses the same protocol.

Usually,the term "____" indicates a specific computer system whose services and resources can be used from remote locations.

Round robin access control is an inefficient technique when there are many nodes transmitting over long periods of time.

The ___,which makes technical recommendations about data communication interfaces,took on the task of creating a universal network architecture,resulting in the OSI Reference Model.

The geometric arrangement of connections (cables,wireless,or both) that link the nodes in a networked system is called a ____.

Under the Domain Name Service (DNS) protocol,in the address someone@name1.name2.name3.name4,the host name is ____.

In a bus network topology,devices are physically connected by means of cables that run between them,and the cables pass through a centralized controller mechanism called the bus.

The physical topology of a network may not reflect its logical topology.