critical thinking questions Part 1

lynxfatkidneyedΔίκτυα και Επικοινωνίες

26 Οκτ 2013 (πριν από 3 χρόνια και 5 μήνες)

81 εμφανίσεις

Part

1: Check Your Understanding

Instructions:

Answer the questions below for more practice with key terms and concepts
from
Part 1
.

Visit
www.pearsonhighered.com/techinaction

to check your answers and to
find other activities related to the chapter.

Multiple Choice


1.

Each device connected to a network is known as a


a.

peripheral.

b.

network spoke.


c.

node
.

d.

computing unit.


2.

A small network
used for communication between personal computing devices is a


a.

W
AN.


b.

PAN.


c.

L
AN.


d.

MAN.


3.

The fastest broadband Internet service is usually


a
.

fiber
-
optic.


b.

DSL.


c.

cable.


d.

satellite.


4.

The part of the network that establishes a communications channel between the nodes of
the network is known as


a.

network operating software.


b.

transmission media.


c.

a network navigation device.


d.

a switch.


5.

The device used to

move data between two networks is called a


a.

gateway.


b.

switch.


c.

wireless range extender.


d.

router.


True

False

__ ___

1.

Actual data throughput is usually higher on wired networks than on wireless ne
t-
works.

(
TRUE
)

__ ___
2
.
Home networks are
usually configured as a client/server network
.

(
FALSE
)



c
ritical thinking questions



Part 1


1.

Protecting Yourself on Public Wireless Networks

Many people use free public wireless networks to access the Internet. But many pu
b-
lic networks don’t have
adequate security or may be under surveillance by hackers.
To protect your sensitive data, there are certain activities you should not engage in on
public networks. What types of activities should you avoid on a public network?
What types of information sh
ould you only process on your secure home network?


When students set up a wireless network, to help make it more secure they could
change the default network name, change the default password on the router, disable
the SSID broadcast to prevent other wire
less devices from finding it, and ensure all
security protocols are on, such as the firewall. They can also check with their ISP
providers to find out what security measures are in place. The network identification
information should be kept private, and a
ll passwords could be created using a co
m-
bination of letters and numbers. If students find they can access a neighbor’s network,
the information about safeguarding networks could be shared with that neighbor by
sending them an email or stopping by and expl
aining you were able to gain access.
Students should think about any Web page requiring a password, and any transmi
s-
sion where privacy is important such as financial transactions, credit card purchases,
and private business correspondence.


2.

How Networked A
re You?

You probably
use more networks than you realize. List all the networks you access:
home, mobile, school, business, etc. and then determine what kind of network each is.
What devices do you use when you are accessing each network?

Student’s answer
s will vary, but should include places such as home, school, Sta
r-
bucks, work. Each can be identified by being a PAN, LAN, WAN, MAN. Devices
should include smartphones, laptops, PCs, tablets, game consoles, smart tvs, e
-
book
readers.



Part

2: Check Your U
nderstanding

Instructions:

Answer the questions below for more practice with key terms and concepts
from Part 2.

Visit
www.pearsonhighered.com/techinaction

to check your answers and to
find other activities related to the chapter.

Multiple Choice

1.

When setting up a home network, the router is attached


a. directly to the broadband modem
.


b. directly to the NIC in each device.


c. directly to the Internet.


d. directly to the Ethernet switch.

2. All of the following are methods to secure your wireless network except


a.

disabling SSID broadcast.


b.

enabling WPA.


c.

changing your network name (SSID).


d.

disabling WEP.

3. Which network
-
ready device facilit
ates file sharing and data backup?


a. Home network server


b. Time Capsule


c. Network
-
attached storage


d. All of the above

4. To share files between computers on a Windows home network, you must


a. enable groupsharing.


b. create a homegroup
.


c. enab
le Windows sharing.


d. None of the above

5. Which of the following is not recommended to do when securing a home wireless ne
t-
work?


a. Change the default password on the router.


b. Turn on security protocols.


c. Enable SSID broadcast
.


d. Change the network SSID name.

True

False

_____ 1. Network
-
ready devices contain Ethernet switches. (
False
)

_____ 2. Home network servers are a specialized type of NAS device. (
True
)


c
ritical thinking questions



Part 2


1.

Evaluating Your Network
Configuration

Write

down all the devices you believe currently connect to your home network, e
i-
ther wired or wirelessly. Make sure you consider smartphones, tablets, laptops, des
k-
tops, gaming consoles, DVRs, smart TVs, and printers. Are there devices (such

as
printers or

TVs) that are not currently able to connect directly to your network that you might
want to replace? If so, note those devices, and describe the advantages a ne
t-
work
-
ready replacement would bring. Are there other devices you might also wan
t to
consider adding to your network that you don’t currently have, such as a
home
-
monitoring system? If so, why would they be helpful?

Student’s answers will vary, but the list might be substantial. Devices that are not
network
-
ready mostly would include printers, TVs, but there may be others. A
d-
vantages students may site for network
-
ready devices is accessibility, promotes co
l-
laboration
and sharing as well as ease of use. Disadvantages might include inability
to use devices w/o the Internet, security & privacy.

2.

Evaluating Your Network Storage Needs

You probably have media, such as videos, pictures, and music, that you access on a
regular

basis that you may already be sharing (or want to share) with family members.
You could install an NAS device on your network to share the media, and perhaps
you might even already have one. But this is usually only a good solution if the pe
o-
ple you share

media with are living in your household. For sharing media outside of
the home, you could consider an NAS device that is accessible through the Internet or
you could use an Internet
-
based media sharing solution. Consider the following:

a.

What types of media

do you need to share? With whom do you need to share
them? Where are these people located? Do they all use your home network? If
not, do they all have access to the Internet? How much space will the media you
need to store occupy? Consider what you alread
y have on hand plus what you
might be acquiring in the future.

b.

Investigate at least three different NAS devices (including home network servers)
that feature the capacity you need. What is the cost of these devices? Can the d
e-
vices be accessed over the Int
ernet or do they require access to your network?
What are the storage capacities of the devices?

c.

Research at least three Internet
-
based media storing/sharing solutions such as
Dropbox, MediaFire, Amazon Cloud Drive, MiMedia, Mediashare, and Wixi.
What is
the cost associated with each service? Are there individual file size lim
i-
tations for storage? What is the total volume of media you can store? Is the media
you store on the site easily sharable with others? Does the service allow storage of
all the types
of media you need to store?

d.

Which solution would you implement? Be sure to justify your choice.


Students should make a list of the computers, printers, and other devices in use at
their home, and whether any of them are networked. They should take into co
nsider
a-
tion the cost of adding additional devices or savings if they could share some centra
l-
ized items such as printers. They can list what the advantages would be for each fa
m-
ily member. If they add a network attached storage device, for example, they wo
uld
have the advantage of centralized files, faster delivery of files, and expandability. Any

student justifications made are important to the question. Charts comparing the NAS
devices and the Internet
-
based storing/sharing solutions would be helpful and
demonstrate good research
.