Chapter 2 Section 2 (2.2)

Question 1

An infrastructure is like a highway that provides a means of transporting goods from one city to another.

Answer 1

TRUE

Question 2

Open architecture models share similar advantages to open standards in that they are unavailable for public comment, review, and varying implementations.

Answer 2

FALSE

Question 3

If you have ever used a bank’s automated teller machine (ATM), paid for gasoline at an automated gas pump using a charge card, made an airline reservation over the phone, paid a restaurant check using a credit card, or surfed the World Wide Web, then you have used a data communications network that is based on either the Open Systems Interconnection (OSI) or the Transmission Control Protocol/Internet Protocol (TCP/IP).

Answer 3

TRUE

Question 4

The ISO developed the Open Systems Interconnection (OSI) model.

Answer 4

TRUE

Question 5

A good way to remember a layer stack (or protocol stack) is: All People Seem To Need Digital Power.

Answer 5

TRUE

Question 6

Three key services provided at the application layer of the OSI model include: (1) synchronizing the services between a user application and the protocol(s) it may use, (2) ensuring that necessary resources required by an application service are available, and (3) making sure that the correct communication protocol or service is available to the application.

Answer 6

TRUE

Question 7

E-mail, remote file access and transfer, printing services, various messaging services, and shared database management are all services supported at the data link layer of the OSI model.

Answer 7

FALSE

Question 8

The presentation layer is responsible for the interoperability between a sender and receiver who might be using different encoding schemes.

Answer 8

TRUE

Question 9

Compression occurs at the receiver’s end and increases the number of bits to be transmitted based on some type of compression scheme.

Answer 9

FALSE

Question 10

The session layer is responsible for establishing, maintaining, and terminating communications running between processes or applications across the network.

Answer 10

TRUE

Question 11

Data does not have to be encoded into some binary form in order to be used by computer systems.

Answer 11

FALSE

Question 12

The transport layer ensures that the entire message sent from a sender to a receiver has been delivered.

Answer 12

TRUE

Question 13

Whereas the transport layer in the OSI model is responsible for determining if the entire message has been delivered, the network layer is concerned about the delivery of individual packets across network links.

Answer 13

TRUE

Question 14

Something that is “logical,” as in a logical address, cannot be changed or modified. Something that is “physical,” as in a physical address, is fixed, or set, and can be changed.

Answer 14

FALSE

Question 15

Whereas the network layer in the OSI model provides for logical addressing, the data link layer provides for physical addressing.

Answer 15

TRUE

Question 16

OSHA stands for the U.S. Department of Labor’s Occupational Safety and Health Administration.

Answer 16

TRUE

Question 17

Many OSHA regulations and standards cover wiring methods, components, and how and where equipment is deployed.

Answer 17

TRUE

Question 18

Many of the courses on network wiring completed by networking technologists have an ethics component.

Answer 18

TRUE

Question 19

TCP/IP stands for Transporting Computer Protocol/Internet Protocol.

Answer 19

FALSE

Question 20

TCP/IP is known as having either a four- or five-layer model.

Answer 20

TRUE

Question 21

The layers of the OSI and TCP/IP models do not have many of the same functionalities.

Answer 21

FALSE

Question 22

The application layer of TCP/IP includes the functionalities of the OSI application, presentation, and session layers.

Answer 22

TRUE

Question 23

In TCP/IP, the application layer is also sometimes referred to as the process layer because this is where a protocol stack interfaces with processes on a host machine, enabling that host to communicate across the network.

Answer 23

TRUE

Question 24

The transport layer of the TCP/IP model has two key protocols that are identified with it: TCP (Transmission Control Protocol) and UDP (User Datagram Protocol).

Answer 24

TRUE

Question 25

The network layer of TCP/IP supports IP, or Internet Protocol.

Answer 25

TRUE

Question 26

IP is an “unreliable” and “connectionless” protocol because it is bad or weak.

Answer 26

FALSE

Question 27

The four protocols associated with the IP protocol are: the Address Resolution Protocol (ARP), the Reverse Address Resolution Protocol (RARP), the Internet Control Message Protocol (ICMP), and the Internet Group Message Protocol (IGMP).

Answer 27

TRUE

Question 28

Both the TCP/IP model and the OSI model have the physical layer, but the physical layer is vastly different in each model.

Answer 28

FALSE

Question 29

A network will fall within one of the following four categories: local area network, backbone network, metropolitan area network, wide area network.

Answer 29

TRUE

Question 30

A LAN is usually the most expensive of networks to set up.

Answer 30

FALSE

Question 31

Because LANs typically cross public thoroughfares or property, they are regulated by the FCC or state public utility commissions.

Answer 31

FALSE

Question 32

A LAN might include devices such as printers, microcomputers, workstations, servers, hubs, bridges, and routers.

Answer 32

TRUE

Question 33

An organization must have no more than one LAN

Answer 33

FALSE

Question 34

All of the networks that belong to one organization are collectively called the enterprise.

Answer 34

TRUE

Question 35

A backbone network is usually a high-speed circuit that connects all of the networks within the enterprise, allowing them to communicate with each other.

Answer 35

TRUE

Question 36

A business cannot have both a local area network and a backbone network at the same time.

Answer 36

FALSE

Question 37

A MAN can be used to connect BNs and LANs.

Answer 37

TRUE

Question 38

A cloud is a term used to logically represent connecting to a network infrastructure without being concerned as to how that infrastructure is configured, maintained, or controlled.

Answer 38

TRUE

Question 39

A LAN is between a MAN and a WAN in terms of its geographic scope.

Answer 39

FALSE

Question 40

A WAN will very commonly use circuits provided by common carriers.

Answer 40

TRUE