XYZ Corporation Partial Network Diagram

You are the network engineer for XYZ Corporation whose partial network diagram appears above.As diagrammed, XYZ Corporation has two branch offices separated by a Windows Server 2003 router with three interfaces. One interface connects directly to the Internet and has a public IP address of 24.5.6.7. One interface connects to Branch 1 and the other interface connects to Branch 2. Branch 1 and Branch 2 are of approximately the same size. Each branch currently has 500 hosts; however, you should allow for the size and number of hosts to double.

You are tasked with implementing a DHCP solution that includes fault tolerance, minimizes costs, and does not use the 10.0.0.0 address space. Based on the above diagram, your superiors have proposed four different solutionsfor implementing DHCP based on this scenario. These solutions appear below:

  1. Use a private 192.168.0.0/20 address space. Add DHCP to Server A in Branch 1 and to Server D in Branch 2. Assign scopes based on the 50/50 rule. On Server A, create a scope called Branch1 that starts with 192.168.16.1 and ends with 192.168.24.254. On Server D, create a scope called Branch2 that starts with 192.168.32.1 and ends with 192.168.40.254. For fault tolerance, create a second scope on Server A called Branch2 that starts with 192.168.41.1 through 192.168.47.254. Create a second scope on Server D called Branch1 that starts with 192.168.25.1 through 192.168.31.254. On the router configure a DHCP Relay Agent as appropriate.
  1. Use a private 172.16.0.0/22 address space. Add DHCP to Server A in Branch 1 and to Server D in Branch 2. Assign scopes based on the 80/20 rule. On Server A create a scope called Branch1 that starts with 172.16.4.1 and ends with 172.16.6.254. On Server D create a scope called Branch2 that starts with 172.16.8.1 and ends with 172.16.10.254. For fault tolerance, create a second scope on Server A called Branch2 that starts with 172.16.7.1 through 172.16.7.254. Create a second scope on Server D called Branch1 that starts with 172.16.11.1 through 172.16.11.254. On the router configure a DHCP Relay Agent as appropriate.
  1. Use a private 172.16.0.0/21 address space. Add DHCP to Server A in Branch 1 and to Server D in Branch 2. Assign scopes based on the 80/20 rule. On Server A create a scope called Branch1 that starts with 172.16.8.1 and ends with 172.16.14.254. On Server D create a scope called Branch2 that starts with 172.16.16.1 and ends with 172.16.22.254. For fault tolerance, create a second scope on Server A called Branch2 that starts with 172.16.23. 1 through 172.16.23.254. Create a second scope on Server D called Branch1 that starts with 172.16.15.1 through 172.16.15.254. On the router configure a DHCP Relay Agent as appropriate.
  1. Use a private 172.16.0.0/21 address space, add DHCP to Server A in Branch 1. On Server A create a scope called Branch1 that starts with 172.16.8.1 and ends with 172.16.15.254. Add an exclusion starting with 172.16.12.1 and ends with 172.16.15.254. For fault tolerance, add a second scope to Server A in Branch 1 called Branch 2BU that starts with 172.16.16.1 and ends with 172.16.23.254. Add an exclusion starting with 172.16.16.1 and ends with 172.16.20.254.

Still using a private 172.16.0.0/21 address space, add DHCP to Server D in Branch 2. On Server D create a scope called Branch 2 that starts with 172.16.16.1 and ends with 172.16.23.254. Add an exclusion starting with 172.16.21.1 and ends with 172.16.23.254. For fault tolerance, add a second scope to Server D in Branch 2 called Branch 1BU that starts with 172.16.8.1 and ends with 172.16.15.254. Add an exclusion that starts with 172.16.8.1 and ends with 172.16.11.254.

On the router configure a DHCP Relay Agent as appropriate.

Answer the following questions regarding this scenario:

  1. Define this problem in your own words.
  2. Compare and contrast the four proposed solutions.
  3. Select one of the proposed solutions that you feel is most appropriate for this situation and defend your choice.
  4. Describe any weaknesses in your selected solution.
  5. Make suggestions on ways to improve/strengthen yoursolution. You may include information not described in the scenario above.
  6. Reflect on your own thought process after completing the assignment.

a)“What did you learn from this process?”

b)“What would you do differently next time to improve?”

SPC’s Assessment of Critical Thinking (ARC) Scoring Template

Rater (scorer) name: ______Paper ID: ______Date: ______

Performance
Element / Exemplary
(4) / Proficient
(3) / Developing
(2) / Emerging
(1) / Not Present
(0) / Score
I. Communication
Define problem in your own words. / Identifies the main idea or problem with numerous supporting details and examples which are organized logically and coherently. / Identifies the main idea or problem with some supporting details and examples in an organized manner. / Identifies the main idea or problem with few details or examples in a somewhat organized manner. / Identifies the main idea or problem poorly with few or no details or states the main idea or problem verbatim from the text. / Does not identify the main idea or problem. / 4 3 2 1 0
    
N/A 
Comments:
II. Analysis
Compare & contrast the available solutions. / Uses specificinductive or deductive reasoning to make inferences regarding premises; addresses implications and consequences; identifies facts and relevant information correctly. / Uses logical reasoning to make inferences regarding solutions; addresses implications and consequences; Identifies facts and relevant information correctly. / Uses superficial reasoning to make inferences regarding solutions; Shows some confusion regarding facts, opinions, and relevant, evidence, data, or information. / Makes unexplained, unsupported, or unreasonable inferences regarding solutions; makes multiple errors in distinguishing fact from fiction or in selecting relevant evidence. / Does not analyze multiple solutions. / 4 3 2 1 0
    
N/A 
Comments:
III. Problem Solving
Select & defend your final solution. / Thoroughly identifies and addresses key aspects of the problem and insightfullyuses facts and relevant evidence from analysis to support and defend potentially valid solutions. / Identifies and addresses key aspects of the problem and uses facts and relevant evidence from analysis to develop potentially valid conclusions or solutions. / Identifies and addresses some aspects of the problem; develops possible conclusions or solutions using some inappropriate opinions and irrelevant information from analysis. / Identifies and addresses onlyone aspect of the problem but develops untestable hypothesis; or develops invalid conclusions or solutions based on opinion or irrelevant information. / Does not select and defend a solution. / 4 3 2 1 0
    
N/A 
Comments:

Rater (scorer) name: ______Paper ID: ______Date: ______

Performance
Element / Exemplary
(4) / Proficient
(3) / Developing
(2) / Emerging
(1) / Not Present
(0) / Score
IV. Evaluation
Identify weaknesses in your final solution. / Insightfully interprets data or information;
identifies obvious as well as hidden assumptions, establishes credibility of sources on points other than authority alone, avoids fallacies in reasoning; distinguishes appropriate arguments from extraneous elements; provides sufficient logical support. / Accurately interprets data or information;
identifies obvious assumptions, establishes credibility of sources on points other than authority alone, avoids fallacies in reasoning; distinguishes appropriate arguments from extraneous elements; provides sufficient logical support. / Makes some errors in data or information interpretation; makes arguments using weak evidence; provides superficial support for conclusions or solutions. / Interprets data or information incorrectly;
Supports conclusions or solutions withoutevidence or logic; uses data, information, or evidence skewed by invalid assumptions; uses poorsources of information; uses fallacious arguments. / Does not evaluate data, information, or evidence related to final solution. / 4 3 2 1 0
    
N/A 
Comments:
V. Synthesis
Suggest ways to improve/strengthen your final solution. / Insightfully relates concepts and ideas from multiple sources; uses new information to enhance final solution; recognizesmissing information; correctly identifies potential effects of new information. / Accurately relates concepts and ideas from multiple sources; uses new information to enhance final solution; correctly identifies potential effects of new information. / Inaccurately or incompletely relates concepts and ideas from multiple sources; shallow determination of effect of new information on final solution. / Poorly integrates information from more than one source to support final solution; Incorrectly predicts the effect of new information on final solution. / Does not identify new information for final solution. / 4 3 2 1 0
    
N/A 
Comments:
VI. Reflection
Reflect on your own thought process.
“What did you learn from this process?”
“What would you do differently next time to improve?” / Identifies strengths and weaknesses in own thinking: recognizes personal assumptions, values and perspectives, compares to others’, and evaluates them in the context of alternate points of view. / Identifies strengths and weaknesses in own thinking: recognizes personal assumptions, values and perspectives, compares to others’, with some comparisons of alternate points of view. / Identifies some personal assumptions, values, and perspectives;
recognizes some assumptions, values and perspectives of others; shallow comparisons of alternate points of view. / Identifies some personal assumptions, values, and perspectives;
doesnot consider alternate points of view. / Does not reflect on own thinking / 4 3 2 1 0
    
N/A 
Comments: