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Info 370 > Chapter 2 Section 1 (2.1) > Flashcards

Chapter 2 Section 1 (2.1) Flashcards

0
Q

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.

A

networking model

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1
Q

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

A

protocols

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2
Q

A networking model is akin to a(n):

A

architectural blueprint

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3
Q

Networking models are ________.

A

conceptual

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4
Q

Open standards are:

A

available for public comment, review, and varying implementation

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5
Q

Data communication networking models that have won wide acceptance include:

A

All of the above -

  • OSI
  • TCP/IP
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6
Q

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).

A

TCP/IP

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7
Q

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

A

advantageous

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8
Q

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

A

seven

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9
Q

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

A

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

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10
Q

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) ________.

A

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

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11
Q

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

A

all of the above-

  • e-mail
  • remote file access and transfer
  • e-printing services
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12
Q

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

A

binary

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13
Q

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?

A

presentation layer

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14
Q

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?

A

session layer

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15
Q

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

A

transport layer

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16
Q

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.

A

data link

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17
Q

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

A

synchronization

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18
Q

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

A

OSHA

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19
Q

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

A

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

20
Q

When was the TCP/IP model developed?

A

before the OSI model

21
Q

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

A

They are both layered models

22
Q

IP stands for:

A

Internet protocol

23
Q

ARP stands for:

A

Address Resolution Protocol

24
Q

RARP stands for:

A

Reverse Address Resolution Protocol

25
Q

IGMP stands for:

A

Internet Group Message Protocol

26
Q

ICMP stands for:

A

Internet Control Message Protocol

27
Q

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

A

datagrams

28
Q

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.

A

host

29
Q

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

A
  • 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?
30
Q

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

A
  • either A or B:
  • local area network; backbone network; metropolitan area network; wide area network
  • LAN, BN, MAN, WAN
31
Q

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

A

sometimes blurry

32
Q

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

A

LAN

33
Q

Which of the following statements is the most accurate?

A

A LAN may include printers and routers.

34
Q

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

A

BN

35
Q

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

A
  • 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
36
Q

Which of the following statements is the most accurate?

A

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.

37
Q

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

A

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

38
Q

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

A

WAN

39
Q

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

A

common carriers

40
Q

Which statement is most accurate?

A

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

41
Q

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

A

heavily

42
Q

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

A

hardware, software

43
Q

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

A

2, 4 only

44
Q

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.

A

application

45
Q

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

A

an envelope that gets stamped along the way

46
Q

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

A

application, presentation, session, and transport

47
Q

The three lower layers under the OSI model are:

A

network, data link, physical

48
Q

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

A

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

Info 370 (7 decks)

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