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640-861 : Interconnecting Cisco Networking Devices Part 1 Last Updated Monday, September 22, 2008 with 422 Questions
CCDA
Exam Number: 640-861 Exam
Associated Certifications: CCDA
Duration: 198 Q&As
Available Language(s): English
Exam Details
The Designing Cisco Internetworking exam is the only exam required to achieve a CCDA (Cisco Certified Design Associate) certification.
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QUESTION 1:
What is the next step in the design methodology a network designer would take
after identifying customer requirements?
A. Design the topology.
B. Design network solutions.
C. Characterize the existing network.
D. Build a pilot network.
E. Plan the implementation.
Answer: C
Explanation:
Before beginning the design phase of a new network, the network designer must first
identify the customer needs and requirements so that a full understanding of what the
network is used for is accomplished. The next step is to characterize the existing network,
and then finally once that step is done the network designer should extract the new
customer requirements so that they can be compared to the existing network.
QUESTION 2:
Certkiller is planning to upgrade its current network. The chief technology officer
(CTO) has supplied a topology diagram and IP addressing scheme of the current
network during an interview. Certkiller has been growing at about twenty percent
per year and it has been difficult to maintain customer support at a satisfactory
level. The Certkiller board has met and directed the CTO to look into network
improvements.
Which two items are most relevant in documenting Certkiller ’s business
requirements?
A. Improved customer support
B. Existing network topologies
C. IP addresses assigned by the ISP
D. Projected growth
E. Frequency of board meetings
Answer: A, D
Explanation:
Based on the facts provided about this network, it is clear that the chief concerns that
need to be addressed is the rate of growth of the company and the network, and the level
of customer support. When any growing company expands quickly, it is common for the
company to outgrow the capacity of the network, requiring additional network equipment
and resources.
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QUESTION 3:
Proof of concept is required for a proposed design of a new campus network that
utilized multilayer switching. The production network is business critical and no
network disruptions are tolerated.
Which approach should be used to verify this design?
A. Pilot network
B. Prototype network
C. Hardware simulation
D. Expert consensus
E. None of the above
Answer: B
Explanation:
A prototype is a complex and full trial run of the network design used to prove that the
design works. A prototype is usually a large-scale, fully functional form of a new design
and thus is used to prove a large implementation. The customer would have to decide
whether the need to prove the design justifies the cost of setting up a prototype. If the
prototype is not appropriate for your customer, you might consider recommending a
pilot, which is a smaller test designed for smaller businesses. The pilot usually tests more
basic functions of the design, and it also usually requires less time and fewer resources.
The criteria for choosing either test plan involves comparing the cost of the test against
the need to prove that the design works. In this case, the network elements being tested
are critical, so a full blown prototype should be used to test the design fully.
Reference: CCDA Exam Certification Guide, A. Anthony Bruno, CCIE #2738, p.286
QUESTION 4:
Which factor is a social requirement that will help you to identify current and
future needs of your customer as you develop a new design plan?
A. Improved communications
B. Business partnerships
C. Improved customer-support services
D. The use of the network by its users as it relates to investors
Answer: C
Explanation:
Social requirements define the use of the network based on the company’s business goals
by its users and can include locations, market position, investors, vendors and customers.
Developing the customer relations aspects such as identifying their future needs fall into
this category.
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QUESTION 5:
Which organizational constraint most directly affects the social requirements of a
business?
A. Budget
B. Personnel
C. Policy
D. Schedule
Answer: B
Explanation:
Social requirements define the use of the network based on the company’s business goals
by its users and can include locations, market position, employees, unions, investors,
vendors and customers. Employee relations and changes in personnel fall under the
category of business social requirements.
QUESTION 6:
Certkiller wants to improve the security of their network.
Which information supplied by Certkiller would be most relevant to the new design?
A. The network topology.
B. The speed of the network.
C. The company’s user policy.
D. The number of network users.
E. The applications permitted on the network.
Answer: C
Explanation:
Since the security policy of the Certkiller network is the chief concern, the current user
policy would be most beneficial for the new design.
Incorrect Answers:
A: The network topology is not the primary issue.
B: Speed affect the number of users and applications and is an important consideration,
but in this case we are more concerned with the security aspects.
D: Number of users matters in case of performance issue. It is not the primary issue in
this case.
E: One can add or delete applications. It will not play major role
QUESTION 7:
Certkiller users have online access to sales records, customer records and billing
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data in various branch office databases. Certkiller want to open a new branch office
in the Midwest. The new branch office will have a dispatch center which will require
constant communication with the local retailers.
What additional information should you obtain about applications in use on the network?
A. The authentication used by the application.
B. The routing protocols supported by the application.
C. The applications’ integration in the network.
D. The application data-link layer overhead.
E. The applications’ level of criticality.
Answer: E
Explanation:
It is always very important to first understand all of the major applications that will be
running within the network, as well as their importance. In order to design the network
properly, the critical applications must first be identified.
QUESTION 8:
Which three factors will you take into account when asked to characterize an
existing network? (Select three.)
A. Traffic analysis
B. Impact on future business
C. Customer staff input
D. Visual inventory
E. Network audit
F. Server statistics
G. Ping analysis
Answer: A, C, E
Explanation:
To characterize a customer’s network, you will need to:
* Identify any bottlenecks
* Determine whether the anticipated growth will cause problems
* Recognize legacy systems that must be incorporated into the new design
* Recognize business constraints and inputs to the design; business constraints are
business-related issues that may place a limitation on your network design.
Reference: Designing Cisco Networks (Cisco Press) page 45
QUESTION 9:
Which of the following sources of information will prove to be most helpful and
accurate when you are collecting data about a customer’s existing network? (Choose
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two.)
A. Existing network topology diagram
B. The resident IT specialist at the customer’s company
C. User interviews
D. Configuration obtained from network equipment
E. Traffic analysis
F. Customer-supplied server list
Answer: A, D
Explanation:
Documenting the customer’s current network is important before any changes are made.
Items you should be most attentive to include the following:
1. Network Topology
2. Addressing schemes
3. Concerns about the network
Reference: Designing Cisco Networks (Ciscopress) page 55
QUESTION 10:
You work as a network consultant. You are contracted by Certkiller to help with the
expansion of the Certkiller network.
Certkiller users have online access to sales records, customer records and billing
data in various branch office databases. Certkiller want to open a new branch office
in the Midwest. The new branch office will have a dispatch center which will require
constant communication with the local retailers.
You want to obtain information about current network availability. Which question
would you ask?
A. Is clustering technology in use by servers on the network?
B. Is full-duplex Ethernet technology deployed on the network?
C. Which routers have HSRP implemented?
D. Are the switches configured for auto-sensing?
Answer: C
Explanation:
The key is at the end of the question when it asks about current network availability,
which directly implies HSRP. HSRP is the Cisco Hot Standby Routing Protocol, which is
used to provide for router redundancy and network availability should one of the routers
or upstream links fail.
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