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367 Terms
1
The Internet is a network covering typically \_____
A planet
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2
Transmission lines on WANs are in general made of \_______.
Radio links optical fiber copper wire
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3
Your wireless network at home is a \_____
LAN
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4
\___ connect two or more \___
switches transmission lines
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5
On networks, the machines that run users programs (applications) are most likely called \________.
hosts
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6
On a \______________ network, frames (packets) sent by any machine on that link are received (heard) by a subset of machines.
multicast
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7
A wide area network (WAN) is a network covering typically \_____
A planet Country Continent
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8
Wifi uses the \____________ standard.
IEEE 802.11
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9
\_________ is the design issue that consists of avoiding that a sender overwhelms a receiver.
Flow Control
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10
\_________ \________ is the design issue that consists of finding errors in the received information.
error detection
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11
A network is a set of \___________ devices which can communicate.
independent
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12
To reduce their design complexity, most networks architectures are organized as \___________.
levels, stacks, layers
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13
\________________ consists of correcting errors in the received information.
error correction
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14
Congestion Control insures that a [Select] does not overwhelms the [Select]
sender, intermediary nodes and receiver
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15
Layers at the same level on two communicating machines are called \_________ .
peer layers
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16
The purpose of each layer is to offer services to the layer just \________ it.
above
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17
This course will focus on two reference models.
TCP/IP Reference Model OSI Reference Model
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18
Check all that apply to the OSI reference model.
-It is a good education tool to understand networks -It is an international standard of networks -It is a thorough representation of computer networks
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19
A 1 gigabits/s (Gbps) bit rate is \_____________ bits per second.
1,000,000,000
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20
\_________ is the design issue that consists of identifying the senders and receivers.
addressing
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21
Your wireless network at home (to access the Internet) uses most likely the \________ standard.
IEEE 802.11
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22
On WANs, switches are called \___________.
routers
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23
Bluetooth is a technology that could work for these types of networks
PAN (Personal Area Network) LAN (Local Area Network)
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24
Layered design consists of \________________.
restricting communications to adjacent or peer layers layers hiding details from each other dividing a complex task in multiple subtasks
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25
A protocol defines the communications rules between \_________ layers.
peer
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26
\_________________ is the design issue that consists of finding a path (list of switchs to traverse) between a source host and a destination host.
Routing
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27
A list of the protocols used by certain system, one protocol per layer, is called a \_______ \__________.
protocol stack
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28
\_________ \________ is the design issue that consists of correcting errors in the received information.
Error correction
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29
Each layer requests service(s) from the layer just \________ it.
below
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30
The key objectives/benefits of a layered design are:
-The serviced layer does have to worry about the details belonging to the serving layer (service provider)
-Simplify a complex function/service by partitioning it into smaller functions
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31
\_________ is the design issue that consists of avoiding that a sender overwhelms the receiver and any intermediary nodes.
Congestion control
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32
The rules governing the request/delivery of a service between adjacent layers is called \_______________.
an interface
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33
These layers are part of the OSI Reference Model.
Application Presentation Session Transport Network Data Link Physical
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34
In the OSI reference model, the [name1] layer provides service directly to the application layer.
presentation
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35
In the OSI reference model, the [name1] layer receives service directly from the session layer.
presentation
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36
In the OSI reference model, this layer is an intruder (i.e., it does not belong within this list of options).
Application
\------------------------------------------
Physical None of the above Network Application Data Link
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37
The number of layers in the OSI Reference model is \____________ .
seven
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38
In the OSI reference model, the [name1] layer provides service directly to the data link layer.
physical
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39
The OSI Reference Model includes this (these) layer(s).
Transport Physical Application
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40
The OSI Reference Model includes this (these) layer(s).
Transport Session Network
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41
The OSI Reference Model includes this (these) layer(s).
Transport Data Link Presentation
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42
Check all true statements about the OSI reference model.
-The physical layer will be active on ALL nodes of a conversation. -The network layer is a point-to-point layer. -The transport layer is an end-to-end layer
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43
In the OSI reference model, these layers are end-to-end layers.
Presentation Session Application Transport
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44
In the OSI reference model, these layers are point to point layers.
Physical Data link Network
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45
In the OSI reference model, the [name1] layer receives service directly from the data link layer.
Network
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46
This (These) layer(s) are part of the OSI Reference Model.
Physical Data Link Network
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47
In the OSI reference model, this layer is an intruder (i.e., it does not belong within this list of options).
Session
\------------------------------------------ Network Session None of the above Physical Data Link
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48
In the OSI reference model, these layers are active only on devices at the end points of a conversation.
Application Transport Session Presentation
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49
In the OSI reference model, the [name1] layer provides service directly to the network layer.
data link
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50
In the OSI reference model, this layer is an intruder (i.e., it does not belong within this list of options).
Data Link
\------------------------------------------ None of the above Application Presentation Data Link Transport
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51
In the OSI reference model, the [name1] layer provides service directly to the transport layer.
Network
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52
In the OSI reference model, this layer is an intruder (i.e., it does not belong within this list of options).
Presentation
\------------------------------------------
None of the above Network Data Link Presentation Physical
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53
In the OSI reference model, this layer is an intruder (i.e., it does not belong within this list of options).
Physical \-------------
Presentation Session Physical Transport None of the above
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54
In the OSI reference model, this layer deals with how different machines map data in memory.
Presentation
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55
In the OSI reference model, this layer is the lowest end to end layer (closest to the physical layer).
Transport
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56
Check the protocol(s) that belong(s) to the presentation layer
IEEE 754
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57
The application layer provides this (these) service(s).
communicates with the end user. allows the end users to use the network services.
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58
In the OSI reference model, this end-to-end layer deals with error control and flow control (besides other functions).
Transport
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59
In the OSI reference model, this layer is the closest to the "user".
Application
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60
A popular wireless MAN uses the \___________ standard.
IEEE 802.16
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61
A personal area network (PAN) is a network covering typically \_____
A small car
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62
\____________ is a popular wireless MAN protocol.
WiMax
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63
An interface defines the primitive operations and services between \_________ layers.
adjacent
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64
A wireless LAN uses most likely the \________ standard.
IEEE 802.11
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65
A 1 megabits/s bit (Mbps) rate is \_____________ bits per second.
1,000,000
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66
A 1 kilobits/s (Kbps) bit rate is \_____________ bits per second.
1,000
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67
An interface defines the primitive operations and services between \_________ layers.
adjacent
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68
A set of layers and protocols is called a \_______ \__________.
network architecture
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69
This issue is not a network software issue
Memory footprint
\--------------------------------------- Scalability None of these answers Confidentiality or authentication Memory footprint Routing
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70
This issue is not a network software issue
Energy/Power management
\------------------------------- Energy/Power management Addressing, naming Routing Error detection or correction None of these answers
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71
This issue is not a network software issue
Congestion or flow control Confidentiality or authentication Routing None of these answers Scalability
None of these answers
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72
Check all true statements
NOT UDP identifies upper processes (applications) using the IP address NOT TCP identifies upper processes (applications) using the IP address
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73
A(n) \__________ is a set of rules defining communications between adjacent layers.
interface
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Peer layers use a [name1] to communicate.
protocol
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75
The OSI reference model has \_____ end-to-end layers and \_____ point-to-point layers.
4, 3
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76
In the OSI reference model, the [name1] layer receives service directly from the transport layer.
Session
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77
Ethernet uses the \____________ standard.
IEEE 802.3
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78
Today, most wired LANS run at speeds from \________ up to \________ .
NOT 1 Mbps up to 100 Gbps (both could be wrong, or just one could be wrong)
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79
Designs that continue to perform well when the network gets large are said to be \___________.
scalable
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80
A(n) \__________ is a set of rules defining communications between peer layers.
protocol
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81
In the OSI reference model, this end-to-end layer deals with addressing and congestion control (besides other functions).
Transport
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82
In the OSI reference model, the transport layer does not provide/perform this (these) service/function(s).
None of these answers
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83
The transport layer offers in general these services/functions.
error control congestion control addressing/naming flow control
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84
The transport layer provides this (these) service(s).
handles congestion detects transmission errors splits messages too large for the network
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85
These are the underlying design constraints that resulted in what the OSI Reference Model is today
PARTIAL - 3.13/6.25 The flow of information through interfaces must be minimal
NOT The flow of information through protocols must be minimal.
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86
\______________ links connect individual pairs of machines.
PARTIAL NOT bus
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87
Point-to-point transmission with exactly one sender and exactly one receiver is sometimes called \___________.
unicasting
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88
On a \______________ medium, frames (packets) sent by any machine on that medium are received (heard) by all other machines on the medium.
broadcast
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89
Bluetooth is a technology that could work well to connect \______
-a central unit (computer) with the standard inputs/outputs -Wireless speakers to an entertainment center -Audio system to your cellphone in a car
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90
A header is a message exchange between Layer n and Layer \________.
n
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91
A local area network (LAN) is a network covering typically \_____
One small campus One room One small building
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92
The application layer offers in general these services/functions.
specialized services to users that lower layers do not offers addressing/naming
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93
Check the protocol(s) that belong(s) to the transport layer
UDP TCP
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94
The presentation layer provides this (these) service(s).
allows machines with different data representations to communicate.
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95
Check the protocol(s) that belong(s) to the application layer
DNS SMTP HTTP SSH
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96
The presentation layer provides this (these) service(s).
allows machines with different data representations to communicate.
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97
For a conversation, these layers (OSI reference model) will be active on all endpoints
Physical Transport Data Link Application Network
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98
In the OSI reference model, the [name1] layer provides service directly to the session layer.
Transport
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99
In the OSI reference model, the [name1] layer provides service directly to the presentation layer.
Session
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100
In the OSI reference model, the [name1] layer receives service directly from the network layer.
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