Transcript Objective 2 - School of Computing

Creation and Evaluation of an
Educational Framework for use in
Network Teaching
David McLuskie
School of Computing
October 2008
Overall Aim
• Develop and evaluate an educational framework
that could be used to enhance education
learning in universities for network courses
Objective 1
• Investigate the current learning taxonomies that
are used in an educational environment and
investigate how these can be applied in an
emulated network environment to provide an
enhanced learning tool for students
Objective 2
• Integrate a network emulation module that will
automatically generate a dynamic network
scenario for the user to configure and then
automatically grade the user based upon how
they solved the problem.
Objective 3
• Monitor the performance of the overall solution
to verify that the solution developed can be run
on the user’s machines without any adverse
affects that would spoil the user experience.
Objective 1
• Cognitive Architecture
– Refers to how people learn and process information
• Working Memory
– Split into two Areas
• Short term memory
• Long term memory
• Cognitive Load Theory
Objective 1
• Fading Worked Examples
– Reduces Cognitive Load by providing to the student a
partial solution to a problem
– Student has to solve the missing parts without having
to start from the beginning
– Only the information that is related to solving the
problem need be stored in working memory
Objective 1
• Blooms’s Taxonomy
– Splits the cognitive domain into levels
Level
1
2
3
4
5
6
Description
Knowledge/Recall
Comprehension
Application
Analysis
Synthesis
Evaluation
Objective 1
• SOLO Taxonomy
– Used to gauge how well the student has answered
the question
Name
Description
Prestructural
Does not answer the question
posed in any way or form.
Answer focuses on a simple
meaning and does not go into any
depth
A disorganised list with no order
Unistructural
Multistructural
Relational
Extended abstract
Shows that the student
understands how to apply the
theory to a problem
Shows that the student has read
around the area and answered at
a level that illustrates
understanding at the next level.
Objective 2
Objective 2
• Challenge 1
R0
R1
Objective 2
• The student will be asked to perform the following
tasks on R0: – Configure a hostname on R0 using the stated parameters
– Configure an IP address on Fasthernet0/0 using the stated
parameters
– Bring up the Fastethernet0/0 interface
• The student will be asked to perform the following
tasks on R1: – Configure a hostname on R1 using the stated parameters
– Configure an IP address on Fasthernet0/0
– Bring up the Fastethernet0/0 interface
Objective 2
• Implied Tasks
– Copy the running-config to the startup-config
Objective 2
• Bloom Rating
Description
Knowledge/Recall
Used
Comprehension
X
Application
X
Analysis
Synthesis
Evaluation
X
Objective 2
• Challenge 2
R0
R1
Objective 2
• The student will be asked to perform the following
tasks on R0: – Configure 4 loopback addresses using the stated
parameters
– Configure EIGRP using the stated parameters
– Advertise the loopback addresses into EIGRP
• The student will be asked to perform the following
tasks on R1: – Configure 4 loopback addresses using the stated
parameters
– Configure EIGRP using the stated parameters
– Advertise the loopback addresses into EIGRP
Objective 2
• Implied Tasks
– Copy the running-config to the startup-config
– Advertise the directly connected links between R0
and R1 into EIGRP
Objective 2
• Bloom Rating
Description
Knowledge/Recall
Used
Comprehension
X
Application
X
Analysis
X
Synthesis
Evaluation
X
Objective 2
• Challenge 3
Objective 2
• The student will be asked to perform the following
tasks on London.
– Configure OSPF on the router
– Redistribute the EIGRP routes into OSPF
– Redistribute the OSPF routes into EIGRP using the stated
parameters
• The student will be asked to perform the following
tasks on Edinburgh: – Configure 4 loopback addresses using the stated
parameters
– Configure OSPF on the router
Objective 2
• Implied Tasks
– Copy the running-config to the startup-config
– Advertise the directly connected links between
London and Edinburgh into EIGRP
– Enable the link between London and Edinburgh
Objective 2
• Bloom Rating
Description
Knowledge/Recall
Used
Comprehension
X
Application
X
Analysis
X
Synthesis
Evaluation
X
Objective 3
• Footprint Evaluation
– Windows XP
– Windows XP running in Emulation mode using
VMWARE Fusion on a Macintosh computer.
– Windows Vista Business
• Questionnaire
Objective 3
• Footprint Evaluation Results
Operating System
Windows XP
Average Processor
Utilisation Range (%)
1.6 – 1.7
Windows Vista Business
0.9 – 1.2
Windows XP Emulation
49.8 – 50.9
Objective 3
• Further Testing
Number of Routers
2
Average Processor
Utilisation (%)
36.1
3
43.04
4
49.61
5
52.44
6
55.7
Objective 3
• Further Testing
Average Processor Utilisation for BGP
Routers
Average Processor Utilisation (%)
60
50
40
30
Average Processor Utilisation
for BGP Routers
20
10
0
2
3
4
5
Number of Routers
6
Objective 3
• Questionnaire Results
Question
SA
A
N
6
2
2
2
5
3
2
8
2
8
2
The level of feedback was adequate for the student 2
to learn from the mistakes made?
The program was easy to use and set up?
The specification of the challenges was stated in a
clear manner?
Not having to start from scratch in each challenge
saved time and allows the challenge to be
completed quickly?
Using a fully functional IOS is better than the
restricted IOS used in simulators (e.g. full use of
the back and forward arrow keys for the command
history)?
The challenges maintain my interest throughout?
6
4
D
6
SD
Conclusions
• Performance issues when running in emulation
• Bloom model in teaching networking