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WorksheetsNetwork Models
Total questions: 60
Worksheet time: 30mins
A network model reflects a _______ to accomplish communication between different systems
structure
architect
design
system
The OSI model is made up of _____ ordered layers
five
seven
four
six
_______ the network model for Microsoft computers.
TCP-IP
AppleTalk
SPX-IPX
NetBIOS
Layer 3 uses the services provided by ______
layer 2
layer 4
layer 3
layers 2 and 4
A network model usually consists of _______
programs
protocols
layers
algorithm
The communication between same layers are governed by an agreed upon series of rules and conventions called ______
services
topology
protocols
semantics
Each layer of a model represents specific ________
tasks
protocol
functionality
duty
The processes on each machine that communicate at a given layer are called ________ processes.
point-to-point
multi-tasking
distributed
peer-to-peer
A layer is normally a collection of _______
algorithms
protocols
architectures
tasks
The physical layer communication is _____
private
direct
via addressing
indirect
There are a number of different network models. Some of these models relate to a specific _______
implementation
task
functionality
protocol
Each layer in the sending machine adds its own information to the message it receives from the layer above it, This information is added in the form of ______
headers
codes
trailers
headers or trailers
________simply describe the process of networking
TCP/IP
SPX/IPX
OSI
NetBIOS
______ are added to the data at layers 6, 5, 4, 3, and 2
headers
trailers
trailers and headers
none of the choices
Two reasons why layering is important is modularity and _____
repeatability
functionality usage
functionality re-use
ease of re-use
Trailers are usually added only at layer ______
2
3
4
5
Peer-to-peer processes execute layer-n protocol to provide service to layer- _____
n+1
n
n-1
n+2
The machine passing of the data and network information down through the layers of the receiving machine is made possible by a/n ______.
service
padding
interface
protocol
Layer-n peers exchange _____ to effect transfer
SDUs
services
PDUs
addresses
Layers ________ are the network support layers: they deal with the physical aspects of moving data from one device to another.
1, 2, and 3
3, 4, and 5
4, 5, and 6
5, 6, and 7
Actual communication is made possible by using communication _______
architecture
protocols
system
devices
Layers ________can be thought of as user support layers: they allow inter-operability among unrelated software systems
1, 2, and 3
3, 4, and 5
4, 5, and 6
5, 6, and 7
PROTOCOL LAYERING is applied when communication is _______
large
simple
complex
complicated
_______ layer ensures end-to-end reliable data transmission.
physical
data-link
network
transport
1.The two objects under each layer at both sides should be _________
identical
different
complimentary
complex
_______ layer ensures reliable transmission on a node to node link
physical
data-link
network
transport
_______communication is an imaginary connection at each layer through which they can send the object created from these layers
Peer-to-peer
Node-to-node
Layer-to-layer
End-to-end
______ layer is mostly hardware
physical
data-link
network
transport
The original TCP/IP protocol suite was defined as having _____ layers
seven
six
five
four
The upper OSI layers are almost always implemented in _______.
hardware
software
hardware and software
firmware
A set of protocols organized in different layers
model
architecture
protocol suite
protocol standard
Lower layers are a combination of _______
hardware
software
software and hardware
firmware
Each upper level protocol is supported by the services provided by one or more lower level protocols
parallel
structured
hierarchical
referenced
Upon reaching the destination, the signal passes into layer 1 and is transformed back into _____
electromagnetic waves
codes
bit stream
current
Most local-area networks use a ______ physical address
32-bit
16-bit
48-bit
64-bit
The _______ layer deals with the mechanical and electrical specifications of the interface and transmission medium
application
network
physical
data-link
The _________ addresses will change from hop to hop
device
physical
mach
logical
In a _______ configuration, a link is shared between several devices
point-to-point
primary-to-secondary
multipoint
shared
a port address is a ________
64-bit address
32-bit address
16-bit address
8-bit address
The data-link layer divides the stream of bits received from the network layer into manageable data units called _______
frames
datagram
packet
bytes
A general phrase for software that is designed to help set up, manage, and/or monitor computer networks
network hardware
network protocol
network software
network architecture
The ______ layer adds a header to the packet coming from the upper layer that includes the logical addresses of the sender and receiver
data-link
transport
network
application
_____ provides an end-to-end solution to automate the network from data center to campus or branch
PDU
SDN
PDN
SDU
Network layer oversees end-to-end delivery of individual ______
data
frames
packets
bytes
Is a phrase used to refer to a variety of computer systems that use more than one computer or processor to run an application
Software-defined networking
Data Communications System
Distributed processing
Centralized Architecture
The _______ layer establishes, maintains, and synchronizes the interaction between communicating systems
transport
application
presentation
session
Point-to-point and multipoint is called ______ structure
logical
network
physical
link
The _______ layer is connected with the syntax and semantics of the information exchanged between two systems
session
transport
presentation
application
The lowest layer of the OSI model is concerned with the transmission and reception of the _______ raw bit-stream over a physical medium.
structured
framed
unstructured
ordered
The _______ layer is connected with the syntax and semantics of the information exchanged between two systems
session
transport
presentation
application
The _____ layer enables the user, whether human or software, to access the network
presentation
application
session
transport
The ______ layer decides the location of synchronization points
transport
session
presentation
application
Decryption and encryption of data are the responsibility of the ____ layer
physical
data-link
presentation
session
Dialog control is the function of the ______ layer
transport
session
presentation
application
Mail services and directory services are available to network users through the ______ layer.
data-link
session
transport
application
As the data packet moves from the lower to the upper layers, headers are ______
added
subtracted
rearranged
modified
Data-link layer provides ______ transfer of data frames from one node to another over the physical layer.
accurate
consistent
error-free
efficient
_____ layer controls the operation of the subnet, deciding which physical path the data should take based on network conditions, priority service, and other factors.
transport
physical
session
network
Ensures that messages are delivered error-free, in sequence and with no losses or duplications
data-link layer
transport
network
physical
Layer that formats data to be presented to the application layer
Session
transport
presentation
data-link
