PPDIOO Methodology
Note:
Cisco has formalized a network’s life cycle into six phases: Prepare, Plan, Design, Implement, Operate, and
Optimize. These phases are collectively known as PPDIOO.
Question 1
At which stage in the PPDIOO process would you analyze a customer’s network in order to discover opportunities for network improvement?
A. Plan
B. Prepare
C. Design
D. Implement
E. Operate
F. Design Assessment
Answer: C
Explanation
Design phase: Developing a detailed design is essential to reducing risk, delays, and the total cost of network deployments. A design aligned with business goals and technical requirements can improve network performance while supporting high availability, reliability, security, and scalability.
(Reference: http://www.ciscozine.com/2009/01/29/the-ppdioo-network-lifecycle/)
Question 2
Which of these is the next step after the design phase in the PPDIOO process?
A. Order the equipment.
B. Develop a high-level migration plan.
C. Create a pilot or a prototype network.
D. Develop the implementation plan in as much detail as possible.
E. Identify which network management protocol will be used for which function.
Answer: D
Explanation
The Implement phase begins after the design phase has been finished. In this phase, new devices are installed, configured and tested according to the design specifications.
Question 3
According to Cisco, which four improvements are the main benefits of the PPDIOO lifecycle approach to network design? (Choose four)
A. faster ROI
B. improved business agility
C. increased network availability
D. faster access to applications and services
E. lower total cost of network ownership
F. better implementation team engagement
Answer: B C D E
Explanation
The PPDIOO life cycle provides four main benefits:
+ It improves business agility by establishing business requirements and technology strategies.
+ It increases network availability by producing a sound network design and validating the network
operation.
+ It speeds access to applications and services by improving availability, reliability, security, scalability, and
performance.
+ It lowers the total cost of ownership by validating technology requirements and planning for infrastructure
changes and resource requirements.
(Reference: Cisco CCDA Official Exam Certification Guide, 3rd Edition)
Question 4
Refer to the exhibit
During which stage of the PPDIOO process are implementation procedures prepared?
A. Prepare
B. Plan
C. Design
D. Implement
E. Operate
F. Optimize
Answer: C
Explanation
The Design phase includes network diagrams and an equipment list. The project plan is updated with more granular
information for implementation. This is the so-called “prepare implementation procedures”.
Question 5
Which two design methodology steps relate, at least in part, to the implement phase of the PPDIOO process? (Choose two)
A. verifying the network
B. testing design
C. determining customer requirements
D. characterizing the existing network
E. establishing the organizational requirements
Answer: A B
Explanation
The Implement phase relates to implement new devices, including verifying and testing so A and B are the most suitable options.
“Determining customer requirements” occurs in the Prepare phase, which identifies requirements and builds a conceptual architecture.
“Characterizing the existing network” belongs to the Plan phase; this step is performed to determine the infrastructure necessary to meet the requirements.
In the “establishing the organizational requirements” step, the network topology is designed to meet the requirements and close the network gaps identified in the previous steps. This step is related to the Design Phase of the PPDIOO process.
Question 6
Which two statements represent advantages that the top-down network design process has over the bottom-up network design process? (Choose two)
A. is able to provide the big picture
B. utilizes previous experience
C. takes less time to design a network
D. identifies appropriate technologies first
E. provides a design for current and future development
Answer: A E
Explanation
By incorporating the organization’s requirements, the top-down network design process provide the big picture that meets current and future requirements.
Question 7
Which statement identifies a benefit obtained when using a top-down network design plan?
A. allows quick responses to design requests
B. facilitates design based on previous experience
C. incorporates customer organizational requirements
D. is less time-consuming than using a bottom-up approach
E. provides a more detailed picture of the desired network
Answer: C
Explanation
The top-down approach begins with the organization’s requirements before looking at technologies. Network designs are tested using a pilot or prototype network before moving into the Implement phase.
Question
Which two statements represent advantages that the top-down network design process has over the bottom-up network design process? (Choose two)
A. is able to provide the big picture
B. utilizes previous experience
C. takes less time to design a network
D. identifies appropriate technologies first
E. provides a design for current and future development
Answer: A E
hey
First, its really great work you’re doin and helpin a lot.
I have a comment regarding the first question here ,
I think it is supposed to be the plan phase where you analyze the customer network , even after checking the reference which says the same :)
The plan phase: In the plan phase, a company ascertains whether it has adequate resources to manage a technology deployment project to completion. To evaluate and improve network security, a company tests its network for vulnerability to intruders and outside networks -> The plan phase increases network security, not improve network performance.
But from “CCDA Official Exam Certification Guide” by Anthony Bruno, page 14 – 15
Plan phase: identifies the network requirement by characterizing and “assessing” network
Design phase: design network topology to meet requirements and close network gaps identified in the “Plan” phase
the same is said in Cisco Self study:
Plan phase: This phase involves identifying the network requirements, which are based on
the goals for the network, where the network will be installed, who will require which
network services, and so forth. The Plan phase also involves assessing the sites where the
network will be installed and any existing networks, and performing a gap analysis to
determine if the existing system infrastructure, sites, and operational environment can support
the proposed system . A project plan helps manage the tasks, responsibilities, critical
milestones, and resources required to implement the changes to the network. The project plan
should align with the scope, cost, and resource parameters established in the original business
requirements. The output of this phase is a set of network requirements.
Regarding the discussion for question 1.
I think the key phrase in the question is “opportunities for network improvement”.
While the Plan phase is directly involved in analyzing the existing network, the Design phase is involved with how to change the network.
Given that distinction, the answer would be C, the Design phase.
And still, I vote for the answer “Plan”: by analyzing the existing network, you can already see the opportunities for network improvement. And you will definitely use these opportunities while designing the network in the Design phase ;-)
well, the way i read it, the plan phase is done to assess how ready the network is to accept a design…
“Successful technology deployment depends on an accurate assessment of a company’s current network, security state, and overall readiness to support the proposed solution. In the plan phase, a company ascertains whether it has adequate resources to manage a technology deployment project to completion”
of course, this would imply you already have a solution, which you shoudl not have until the design phase.
Look at it logically. first you would grab info about the network. then you woudl see where it coudl be improved. after that, you woudl actually go about designing that improvement.
“having analysed your network, weve seen that you have a problem with low bandwidth up to your core, and that you have had outages recently relating to your core(plan phase). we propose to use 10G links up to the core using vPCs for redundancy (design phase)
so on the basis that you are looking for areas for improvement, and not actually coming up with a solution, i’d say its at the end of Plan, right before Design
The Plan phase undertakes characterisation and Gap Analysis – The Gap Analysis shows the areas for network improvement – Plan Phase all the way!
Don’t Question 2 and Question 4 conflict? One suggest that the Implementation plan is prepared at the Implementation Phase and the other at the Design Phase
I have to agree to choose Plan phase, sounds make sense to me.. Gosh..really need to pay much attention at wording in CCDA…
btw am grateful to have this site while studying..and @maver did you celebrate new year eve with ccda books *just kidding*
It seems answers to Q2 and Q4 may be in conflict.
According to CCDA OECG 3ed, a design document should include “Implementation Plan” section, and “In step 3, the network topology is designed to meet the requirements and close the network gaps identified in the previous steps. A detailed design document is prepared during this phase. Design solutions include network infrastructure, Voice over IP (VoIP), content networking, and intelligent network services. This set occurs in the PPDIOO Design phase.”,
so for the Q2 it should be A.Order the equipment.
But who really knows what’s on the test author’s mind?..
Question 7
Which statement identifies a benefit obtained when using a top-down network design plan?
A. allows quick responses to design requests
B. facilitates design based on previous experience
C. incorporates customer organizational requirements
D. is less time-consuming than using a bottom-up approach
E. provides a more detailed picture of the desired network
Answer: E
i am confused..i the answer E or C ?
Which statement identifies a benefit obtained when using a top-down network design plan?
A. allows quick responses to design requests
B. facilitates design based on previous experience
C. incorporates customer organizational requirements
D. is less time-consuming than using a bottom-up approach
E. provides a more detailed picture of the desired network
@annie
Answer is C. In CCDA 640-864 Official Cert Guide (4th Edition) clear stated on page 24.
question 1 = Plan. thats where gaps are identified for improvement.
Glad to see other people agree that Q2 & Q4 conflict.
Now I see why other people that have done the exam told me not to bother with the source material and just study the questions… This is all high-level airy-fairy nonsense.
I don’t think Q2 & Q4 conflict. In the Implementation phase, new equipment is installed and configured. This is a hands-on phase where you actually touch the equipment (practical work). But in the Design phase, you are actually laying out on paper how you are going to do the implementation. Check out Official Cert. Guide 4th Edition, page 14 it says “The project plan is updated with more granular information for implementation”
Oops! My bad, they actually do contradict! I just read question 2 again.