Chapter 2 Section 1 (2.1)

Question 0

Above and beyond their standards and protocols, networks have another dimension that describes how they function. This extra dimension is the ________ upon which the network is based.

Answer 0

networking model

Question 1

Physical and logical components within the network work with each other based on standards and ________.

Answer 1

protocols

Question 2

A networking model is akin to a(n):

Answer 2

architectural blueprint

Question 3

Networking models are ________.

Answer 3

conceptual

Question 4

Open standards are:

Answer 4

available for public comment, review, and varying implementation

Question 5

Data communication networking models that have won wide acceptance include:

Answer 5

All of the above -

• OSI
• TCP/IP

Question 6

The ________ model has become the model of choice throughout the world not only for wide area networks (WANs), but also for metropolitan area networks (MANs), local area networks (LANs) and backbone networks (BNs).

Answer 6

TCP/IP

Question 7

A layered architecture is ________ to a data communication network model.

Answer 7

advantageous

Question 8

The Open Systems Interconnection (OSI) model has ________ layer(s).

Answer 8

seven

Question 9

What are the seven layers of the Open Systems Interconnection (OSI) model?

Answer 9

Physical, data link, network, transport, application, presentation, session

Question 10

Three key services provided at the application layer 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) ________.

Answer 10

making sure that the correct communication protocol or service is available to the application

Question 11

Some of the services provided at the application layer of the OSI model might include:

Answer 11

all of the above-

• e-mail
• remote file access and transfer
• e-printing services

Question 12

Data have to be encoded into some ________ form so that the data can be used by computer systems.

Answer 12

binary

Question 13

Which layer in an OSI data communication networking model ensures that data passed up to the application layer is in a format understandable to that layer?

Answer 13

presentation layer

Question 14

Which layer in an OSI data communication networking model is responsible for establishing, maintaining, and terminating communications running between processes and applications across the network?

Answer 14

session layer

Question 15

Which layer in an OSI data communication networking model ensures that the entire message sent from a sender to a receiver has been delivered?

Answer 15

transport layer

Question 16

The ________ layer of the OSI data communication networking model takes unpackaged bit stream data arriving from the physical layer and packages the bits into units called frames and then attaches a physical address to each frame.

Answer 16

data link

Question 17

The physical layer of the OSI data communication networking model is responsible for the ________ of bits, line configuration, physical topology, and the transmission mode.

Answer 17

synchronization

Question 18

One governmental body that sets forth building regulations and safety standards is:

Answer 18

OSHA

Question 19

A significant difference between TCP/IP and OSI is that:

Answer 19

several of the protocols associated with TCP/IP are relatively independent of the layer that they are generally associated with whereas, with OSI, protocol functions are dependent to the layer they are associated with

Question 20

When was the TCP/IP model developed?

Answer 20

before the OSI model

Question 21

What is one thing that the TCP/IP model and the OSI model have in common?

Answer 21

They are both layered models

Question 22

IP stands for:

Answer 22

Internet protocol

Question 23

ARP stands for:

Answer 23

Address Resolution Protocol

Question 24

RARP stands for:

Answer 24

Reverse Address Resolution Protocol

Question 25

IGMP stands for:

Answer 25

Internet Group Message Protocol

Question 26

ICMP stands for:

Answer 26

Internet Control Message Protocol

Question 27

IP is used at the network layer to send units of data called ________ from one network to the next.

Answer 27

datagrams

Question 28

As in the OSI model, the data link layer in the TCP/IP model is responsible for moving data from one ________ to the next in the network path from the sender to the receiver.

Answer 28

host

Question 29

Some of the questions a networking technologist might ask when setting up a network would include:

Answer 29

- All of the above: - What is the purpose of the network? What services will this network be expected to provide? - What types of connectivity, 10 people or 100,000, are required? What are the physical dimensions the network? - Is the network limited to the size of a room or the expanse of a country? What type of business and user applications will this network have to support?

Question 30

A network can fall into one of four categories. What are the categories?

Answer 30

- either A or B: - local area network; backbone network; metropolitan area network; wide area network - LAN, BN, MAN, WAN

Question 31

The distinction between where one category of network begins and another ends is:

Answer 31

sometimes blurry

Question 32

The FCC and state public utility commissions do NOT regulate which type of networks?

Answer 32

LAN

Question 33

Which of the following statements is the most accurate?

Answer 33

A LAN may include printers and routers.

Question 34

The networks of the enterprise are typically connected through which kind of network?

Answer 34

BN

Question 35

Organizations that have more than one LAN might be tempted to ________.

Answer 35

- all of the above: - connect the networks through a backbone network - use a backbone network to allow the LAN networks to communicate with each other - connect the networks to share resources

Question 36

Which of the following statements is the most accurate?

Answer 36

An organization may find, if justified by transmission-volume needs, that having a private MAN may be less expensive than leasing these services from a local telecommunications company.

Question 37

What is the best description of a "cloud" in networking terms?

Answer 37

the inner workings of the infrastructure, the details that are hidden from the user

Question 38

Which of the following will commonly use circuits provided by common carriers?

Answer 38

WAN

Question 39

Sprint, MCI, AT&T and others are all examples of what kind of organizations?

Answer 39

common carriers

Question 40

Which statement is most accurate?

Answer 40

Many MAN and WAN infrastructure users simply lease the right to use the infrastructure.

Question 41

The infrastructures that create and support a WAN are ________ regulated.

Answer 41

heavily

Question 42

Networks have both physical and logical components. These include ________ and ________.

Answer 42

hardware, software

Question 43

In the 7-layered OSI model of architecture, layer 3 would be required to communicate with which of the following layers?

Answer 43

2, 4 only

Question 44

If an employee used a file transfer protocol program to send a large report file, the user interface in the file transfer program would serve as the ________ layer that permits two people to exchange the data file over the network.

Answer 44

application

Question 45

When data travels through the layers of a networking model, it is most akin to ________.

Answer 45

an envelope that gets stamped along the way

Question 46

The top four "end-to-end" layers under the OSI model are:

Answer 46

application, presentation, session, and transport

Question 47

The three lower layers under the OSI model are:

Answer 47

network, data link, physical

Question 48

How do OSI layers help a document in a Chicago workstation get to a workstation in Denver?

Answer 48

The layer protocol takes over at each step, down the layers, and each layer envelopes and adds its own stamp or header