Q)Explain why security is important for WLANs,
even more so than for wired networks.
Sol:
Wednesday, 26 November 2014
Networking Homework Help: Explain why security is important for WLANs, even more ...
Networking Assignment Help: What specific steps can be taken to improve security in WLANs...
Q)What specific steps can be taken to improve
security in WLANs?
Sol:
The below steps can be taken to improve the
security in WLANs:
a) Initially wireless network has to be authorized
and authenticated.
b) Also all the users try to get connected to
that particular has to be authorized and authenticated.
c) Every user connected to the network has to be
uniquely identified by their own unique username and password.
d) Multiple users with same username and
password should not be allowed to connect to the network.
e) Every user has to be properly disconnected so
that no one in queue must be able to continue to get connected to the network
with their username and password.
Think and Answer Assignments: Minicase IV Household Wireless page....
Q)Your sister is building a new two story house
which measures 50 feet long by 30 feet wide and wants to network her family’s
three computers together. She and her husband are both consultants and work out
of their home in the evenings and a few days a month. Each has a separate office with a computer,
plus a laptop from the office that they occasionally use. The kids also have a
computer in their playroom. They have several options for networking their
home:
a) Wire the two offices and
playroom with Ethernet cat5e and put in a 100Base-T switch.
b) Install one Wi-Fi access
point ($85) and put Wi-Fi cards in the three computers (the laptops already
have Wi-Fi)
c) Any combination of these
options
There are many possible solutions to this
problem. What would you recommend,
considering their current hardware configuration as well as potential
expansion? Justify your recommendation.
Sol:
The
best possible solution is to go for installation of Wi-Fi access points followed
by installation of Wi-Fi cards for the desktop computers. Anyways laptops will
definitely have Wi-Fi inbuilt so there is no need for separate installation of
the cards in laptops. The reason behind this is looking at the future
definitely the desktops are getting replaced by laptops. Also laptops are
portable, which means we can carry them any where we need but if they are
connected to some network cables then we will not be able to access the network
wherever we carry the laptops. Also in case of desktops if we place it in 1st
floor but tomorrow we need it in the last floor then there is need to work on
the network connectivity in it only labor is involved in shifting but network
connectivity is always there since it is independent of the location within the
office campus or two story house limits. Hence the recommendation here is to go
for Wi-Fi connection.
Networking Homework Help: There is an ever growing range of physical media being offered such as fiber...
Q)There is an ever growing range of physical
media being offered such as fiber, coax, satellite, IP over power lines, a
number of wireless technologies, and more. Recently, the telephone companies
announced 4G wireless communications and the IEEE has WiMax at Gigabit rates.
What criteria would you use to select technologies for your business and for
your home?
Sol:
The
following are the criteria being used to select technologies for my business:
a) Multiple connections with maximum speed.
b) Higher bandwidth with lesser price.
c) Unlimited downloads with no additional
charges.
d) Unlimited access within the coverage area
irrespective of the machines being used.
e) Full time high speed networks without any
congestion.
The
following are the criteria being used to select technologies for my home:
a) Not more than two connections at a time.
b) Very lesser cost, irrespective of download
limits.
c) Limited access but reduction in the monthly
bill.
d) Moderate speed and bandwidth, irrespective of
the congestion.
e) Lesser monthly rentals provided there are
additional charges for download if it crosses the available limit.
General Assignment Help: How to define a portfolio of Outsourced information technologies services...
Q) How to define a portfolio of Outsourced information
technologies services??
Sol:
Portfolio of Outsourced Information Technologies services can be
defined as identifying and understanding the customer requirements, also
providing a way to communicate the value that the IT organization delivers to
the business.
The portfolio of IT services also allows the IT organization to say to the business,
“Here is what we deliver to you”. Ultimately, it is the list of what customers
‘buy’ from the IT organization by paying the Organization.
Read and Answer: The International Centre for Radio Astronomy Research...
1) The
International Centre for Radio Astronomy Research
Sol:
The International Centre for Radio Astronomy Research is a
collaborative centre placed in Perth, Western Australia. They are already
achieving research excellence in both astronomical science and engineering. The
International Centre for Radio Astronomy Research has grown steadily from its
launch in September 2009. An equal joint venture between The University of
Western Australia and Curtin University, International Centre for Radio Astronomy
Research has strong support from the West Australian as well as Australian
governments and is working very closely with industry and research partners in
Australia and in the entire world. Wireless
internet (WIFI) inventor honored Curtin University has been recognized
as Dr John O’Sullivan’s ground breaking work in astronomy and wireless
technologies by bestowing John with an Honorary Science Doctorate. The latest telescope
puts focus on high school discoveries where a new internet telescope
was launched by State Education Minister Dr Elizabeth Constable at The Western University
of Australia. Also
Sky Noise and Sensitivity Studies of Array Configurations and Antenna Elements were done for the Low-Frequency Band of the SKA.
Sky Noise and Sensitivity Studies of Array Configurations and Antenna Elements were done for the Low-Frequency Band of the SKA.
Questions:
a)
What is WIFI?
b)
Expand ICRAR?
c)
Internet telescope was launched by whom?
d)
Who invented wireless internet?
Sol:
a)
Wireless internet/wireless LAN.
b)
International Centre for Radio Astronomy Research.
c)
Dr. Elizabeth.
d)
Dr John O’Sullivan
Read and Answer: De-noising sea noise data....
1)
De-noising sea noise data
This work presents De-noising sea noise data
and also how data from a marine seismic survey, which is highly contaminated by
noise, was de-noised through the use of a time-frequency filter. In addition to
the present standard work flow designed to remove cavitation noise, strumming
noise and swell-noise. We introduce a new approach to track seismic
interference. This is done by applying time-frequency de-noising on the slowness
that gathers. As a motivation and background for the processing we also explain
some of the techniques behind the generation of the many different noise types.
The end story is that even in case low if
there is a low quality input data then also it can be turned into high quality
seismic sections. Even though the dataset used is only one, the results and its
methodologies represented here are considered to be general, and should be definitely
applicable to a large number of seismic surveys.
Questions:
a)
Name the two components which seismic data consists
of?
b)
What is the second problem in this dataset?
c)
What is the frequency range of swell noise?
d)
What is the frequency range of hydrostatic pressure
variation noise?
Sol:
a)
signal and a noise component
b)
Swell-noise
c)
(1-10(15)Hz)
d)
(0-1(2)Hz)
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