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Network Models

Total questions: 60

Worksheet time: 30mins

Name
Class
Date
1.

A network model reflects a _______ to accomplish communication between different systems

a)

structure

b)

architect

c)

design

d)

system

2.

The OSI model is made up of _____ ordered layers

a)

five

b)

seven

c)

four

d)

six

3.

_______ the network model for Microsoft computers.

a)

TCP-IP

b)

AppleTalk

c)

SPX-IPX

d)

NetBIOS

4.

Layer 3 uses the services provided by ______

a)

layer 2

b)

layer 4

c)

layer 3

d)

layers 2 and 4

5.

A network model usually consists of _______

a)

programs

b)

protocols

c)

layers

d)

algorithm

6.

The communication between same layers are governed by an agreed upon series of rules and conventions called ______

a)

services

b)

topology

c)

protocols

d)

semantics

7.

Each layer of a model represents specific ________

a)

tasks

b)

protocol

c)

functionality

d)

duty

8.

The processes on each machine that communicate at a given layer are called ________ processes.

a)

point-to-point

b)

multi-tasking

c)

distributed

d)

peer-to-peer

9.

A layer is normally a collection of _______

a)

algorithms

b)

protocols

c)

architectures

d)

tasks

10.

The physical layer communication is _____

a)

private

b)

direct

c)

via addressing

d)

indirect

11.

There are a number of different network models. Some of these models relate to a specific _______

a)

implementation

b)

task

c)

functionality

d)

protocol

12.

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 ______

a)

headers

b)

codes

c)

trailers

d)

headers or trailers

13.

________simply describe the process of networking

a)

TCP/IP

b)

SPX/IPX

c)

OSI

d)

NetBIOS

14.

______ are added to the data at layers 6, 5, 4, 3, and 2

a)

headers

b)

trailers

c)

trailers and headers

d)

none of the choices

15.

Two reasons why layering is important is modularity and _____

a)

repeatability

b)

functionality usage

c)

functionality re-use

d)

ease of re-use

16.

Trailers are usually added only at layer ______

a)

2

b)

3

c)

4

d)

5

17.

Peer-to-peer processes execute layer-n protocol to provide service to layer- _____

a)

n+1

b)

n

c)

n-1

d)

n+2

18.

The machine passing of the data and network information down through the layers of the receiving machine is made possible by a/n ______.

a)

service

b)

padding

c)

interface

d)

protocol

19.

Layer-n peers exchange _____ to effect transfer

a)

SDUs

b)

services

c)

PDUs

d)

addresses

20.

Layers ________ are the network support layers: they deal with the physical aspects of moving data from one device to another.

a)

1, 2, and 3

b)

3, 4, and 5

c)

4, 5, and 6

d)

5, 6, and 7

21.

Actual communication is made possible by using communication _______

a)

architecture

b)

protocols

c)

system

d)

devices

22.

Layers ________can be thought of as user support layers: they allow inter-operability among unrelated software systems

a)

1, 2, and 3

b)

3, 4, and 5

c)

4, 5, and 6

d)

5, 6, and 7

23.

PROTOCOL LAYERING is applied when communication is _______

a)

large

b)

simple

c)

complex

d)

complicated

24.

_______ layer ensures end-to-end reliable data transmission.

a)

physical

b)

data-link

c)

network

d)

transport

25.

1.The two objects under each layer at both sides should be _________

a)

identical

b)

different

c)

complimentary

d)

complex

26.

_______ layer ensures reliable transmission on a node to node link

a)

physical

b)

data-link

c)

network

d)

transport

27.

_______communication is an imaginary connection at each layer through which they can send the object created from these layers

a)

Peer-to-peer

b)

Node-to-node

c)

Layer-to-layer

d)

End-to-end

28.

______ layer is mostly hardware

a)

physical

b)

data-link

c)

network

d)

transport

29.

The original TCP/IP protocol suite was defined as having _____ layers

a)

seven

b)

six

c)

five

d)

four

30.

The upper OSI layers are almost always implemented in _______.

a)

hardware

b)

software

c)

hardware and software

d)

firmware

31.

A set of protocols organized in different layers

a)

model

b)

architecture

c)

protocol suite

d)

protocol standard

32.

Lower layers are a combination of _______

a)

hardware

b)

software

c)

software and hardware

d)

firmware

33.

Each upper level protocol is supported by the services provided by one or more lower level protocols

a)

parallel

b)

structured

c)

hierarchical

d)

referenced

34.

Upon reaching the destination, the signal passes into layer 1 and is transformed back into _____

a)

electromagnetic waves

b)

codes

c)

bit stream

d)

current

35.

Most local-area networks use a ______ physical address

a)

32-bit

b)

16-bit

c)

48-bit

d)

64-bit

36.

The _______ layer deals with the mechanical and electrical specifications of the interface and transmission medium

a)

application

b)

network

c)

physical

d)

data-link

37.

The _________ addresses will change from hop to hop

a)

device

b)

physical

c)

mach

d)

logical

38.

In a _______ configuration, a link is shared between several devices

a)

point-to-point

b)

primary-to-secondary

c)

multipoint

d)

shared

39.

a port address is a ________

a)

64-bit address

b)

32-bit address

c)

16-bit address

d)

8-bit address

40.

The data-link layer divides the stream of bits received from the network layer into manageable data units called _______

a)

frames

b)

datagram

c)

packet

d)

bytes

41.

A general phrase for software that is designed to help set up, manage, and/or monitor computer networks

a)

network hardware

b)

network protocol

c)

network software

d)

network architecture

42.

The ______ layer adds a header to the packet coming from the upper layer that includes the logical addresses of the sender and receiver

a)

data-link

b)

transport

c)

network

d)

application

43.

_____ provides an end-to-end solution to automate the network from data center to campus or branch

a)

PDU

b)

SDN

c)

PDN

d)

SDU

44.

Network layer oversees end-to-end delivery of individual ______

a)

data

b)

frames

c)

packets

d)

bytes

45.

Is a phrase used to refer to a variety of computer systems that use more than one computer or processor to run an application

a)

Software-defined networking

b)

Data Communications System

c)

Distributed processing

d)

Centralized Architecture

46.

The _______ layer establishes, maintains, and synchronizes the interaction between communicating systems

a)

transport

b)

application

c)

presentation

d)

session

47.

Point-to-point and multipoint is called ______ structure

a)

logical

b)

network

c)

physical

d)

link

48.

The _______ layer is connected with the syntax and semantics of the information exchanged between two systems

a)

session

b)

transport

c)

presentation

d)

application

49.

The lowest layer of the OSI model is concerned with the transmission and reception of the _______ raw bit-stream over a physical medium.

a)

structured

b)

framed

c)

unstructured

d)

ordered

50.

The _______ layer is connected with the syntax and semantics of the information exchanged between two systems

a)

session

b)

transport

c)

presentation

d)

application

51.

The _____ layer enables the user, whether human or software, to access the network

a)

presentation

b)

application

c)

session

d)

transport

52.

The ______ layer decides the location of synchronization points

a)

transport

b)

session

c)

presentation

d)

application

53.

Decryption and encryption of data are the responsibility of the ____ layer

a)

physical

b)

data-link

c)

presentation

d)

session

54.

Dialog control is the function of the ______ layer

a)

transport

b)

session

c)

presentation

d)

application

55.

Mail services and directory services are available to network users through the ______ layer.

a)

data-link

b)

session

c)

transport

d)

application

56.

As the data packet moves from the lower to the upper layers, headers are ______

a)

added

b)

subtracted

c)

rearranged

d)

modified

57.

Data-link layer provides ______ transfer of data frames from one node to another over the physical layer.

a)

accurate

b)

consistent

c)

error-free

d)

efficient

58.

_____ layer controls the operation of the subnet, deciding which physical path the data should take based on network conditions, priority service, and other factors.

a)

transport

b)

physical

c)

session

d)

network

59.

Ensures that messages are delivered error-free, in sequence and with no losses or duplications

a)

data-link layer

b)

transport

c)

network

d)

physical

60.

Layer that formats data to be presented to the application layer

a)

Session

b)

transport

c)

presentation

d)

data-link