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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
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
+ 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) described in the link
Characterizing an existing network requires gathering as much information about the network as
possible. Which of these choices describes the preferred order for the information-gathering
A. Site and network audits, traffic analysis, existing documentation and organizational input
B. Existing documentation and organizational input, site and network audits, traffic analysis
C. Traffic analysis, existing documentation and organizational input, site and network audits
D. Site and network audits, existing documentation and organizational input, traffic analysis
This section describes the steps necessary to characterize the existing network infrastructure and
all sites. This process requires three steps:
Step 1. Gather existing documentation about the network, and query the organization to discover
additional information. Organization input, a network audit, and traffic analysis provide the key
information you need. (Note that existing documentation may be inaccurate.)
Step 2. Perform a network audit that adds detail to the description of the network. If
possible, use traffic-analysis information to augment organizational input when you are describing
the applications and protocols used in the network.
Step 3. Based on your network characterization, write a summary report that describes the health
of the network. With this information, you can propose hardware and software upgrades to support
the network requirements and the organizational requirements.
You want to gather as much detail as possible during a network audit with a minimal impact on the
network devices themselves.
Which tool would you use to include data time stamping across a large number of interfaces while
being customized according to each interface?
D. Cisco Discovery Protocol
Which three are considered as technical constraints when identifying network requirements?
A. Support for legacy applications
B. Bandwidth support for new applications
C. Limited budget allocation
D. Policy limitations
E. Limited support staff to complete assessment
F. Support for existing legacy equipment
G. Limited timeframe to implement
Network design might be constrained by parameters that limit the solution. Legacy applications
might still exist that must be supported going forward, and these applications might require a
legacy protocol that may limit a design. Technical constraints include the following:
Existing wiring does not support new technology.
Bandwidth might not support new applications.
The network must support exiting legacy equipment.
Legacy applications must be supported (application compatibility).
In which phase of PPDIOO are the network requirements identified?
The Plan phase identifies the network requirements based on goals, facilities, and user needs.
This phase characterizes sites and assesses the network, performs a gap analysis against bestpractice
architectures, and looks at the operational environment. A project plan is developed to
manage the tasks, responsible parties, milestones, and resources to do the design and
implementation. The project plan aligns with the scope, cost, and resource parameters established
with the original business requirements. This project plan is followed (and updated) during all
phases of the cycle.
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