COIT11238 - Networked Infrastructure Foundations

COIT11238 WRITTEN ASSIGNMENTSUBMISSION
(T3 2017)
Due date: Thursday Week 11 (2PM AEST)
Part: Written Assessment
Weighting: 30% of total assessment.
Submission: Electronic (see course website for details)
Instructions
While it should not be necessary to use literature/online resources to complete this
assignment, please ensure you cite and reference any such materials using the Harvard format.
DO NOT copy content directly from either the text or Internet resources: this assignment is
to be in your own words.You will lose marks if you do not use your own words!
Please complete your assignment using this submission template file, inserting your responses
where indicated.
DO NOT delete the marking criteria page – changes are permitted to the formatting of
other pages including the headers and footers.
Please fill in the following details:
Student Name
Student Number
WRITTEN ASSESSMENT TEMPLATE - PAGE 1

Week One
Assignment Question:
People often misuse ICT terminology. Imagine you receive the following email:
Dear Helpdesk
My hard drive took ages to boot-up this morning and now my Internethas stopped working
and I can’t print anything. Help!
Frustrated User.
What terminology mistakes has the user made? What terminology should they have used?
Your answer:
The user might have used the hardware in such a way that the hardware got disfragmated i.e.
he might have installed it wrong or he does not shut down the device. And the internet might
have stopped working because of an error in the .dll and iexplorer.exe files. The user might
have set the time of the device wrong which caused internet explorer to stop working. Along
with this, he was not able to print any document because he might have been using an
outdated driver or he would have updated the operating system of his device but might have
not updated the driver.
Hence, the ICT terminologies which were misused are hardware, files, time, driver and
software.
Your question:
What is ICT?
Your sample answer:
Information and Communication technologies allow communication between the applications
and the systems and helps in connecting the people.ICT has been widely used in the mobile
sector as well as the internet sphere. There are many terminologies of ICT starting from a
device, drive to a software. ICT includes internet, mobiles, softwares and many other
components and is a growing technology in today’s era. This is because it makes the
communication and usage of devices easy.
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Week Two
Assignment Question:
An office LAN has twenty workstations. The office manager has asked you to replace their
100Mbps (wired) hub with a 100Mbps wireless AP. Will this increase or decrease the
bandwidth available to each workstation? Explain your reasoning.
Your answer:
In both the cases the bandwidth available to each workstation will remain the same.
As the hub will work for all the wired networks and hence the bandwidth will be shared with
all the computers which are connected. The wireless parts of a hub are the access points. The
access points are used while working for a wireless number of users. The access points will
also share the bandwidth with all the connected users. Hence, even if all the workstations are
connected and they transmit data through the network then in both the cases the bandwidth
will be shared equally by all the workstations (Forouzan, 2007).
Your question: How the ad hoc networks are different from that of the wireless access
points?
Your sample answer:
Under an ad hoc network, two and more than two networks can be easily connected and there
is no need of access points. The ad hoc networks work on the principles of peer to peer
communication and are implemented just like the Bluetooth networks. The main
disadvantages of wireless ad hoc networks are that they do not have scalability and have
traffic congestion. The wireless ad hoc networks are not permanent in nature.
On the other hand, access points are connected to each other with the help of a LAN. They are
permanent in nature and have good management of scalability and traffic congestion.
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Week Three
Assignment Question:
There are two other LANs at GAMPS office, one for the main office (called ADMIN) and
one for the admissions gate (called GATE). There are 5 workstations on each LAN. On
ADMIN, the workstations connect to a 100Mbps hub. On GATE, the workstations connect to
a 100Mbs switch with all ports operating in half-duplex mode. If you connected your laptop
to GATE, would it be subject to more, the same or less collisions than if it was connected to
ADMIN? You can assume data rates and traffic patterns are the same on each LAN. Justify
your answer by explaining the origin of the collisions.
Your answer:
If I connect my laptop to ADMIN in place of the GATE, then there will be more collisions on
the network. As collisions occur mostly in the setups which uses hubs. But no collision occurs
in a half-duplex mode of a switch. Apart from this, it has also been observed that at times
switch increases the collision domain but it is good for the system. This can be explained with
an example that if a switch which has 5 ports will have 5 collision domains i.e. each and every
port will have individual domain. On the contrary, if a hub has 5 ports then there will be only
one collision domain which will be shared by all the ports (Xiao, 2011).
Your question:
Compare and contrast the difference between switch and a hub.
Your sample answer:
Hub is an electronic device which helps in connecting many different types of network
devices together to create a medium of exchanging data between the devices. The hub has a
half-duplex transmission mode with a speed of 10Mbps. The devices are passive devices, and
the hubs are determined at the physical layer of the OSI model.
On the other hand, a switch is a computer networking devices which helps in connecting
many devices together on a particular computer network. The switch network has a full-
duplex transmission mode consisting of speed upto 1 Gbps. The devices are the active devices
and consist of a networking device along with the software. Switch networks are determined
at the data link layer of the OSI model.
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