640-861 (DESGN) Designing for Cisco Internetwork Solutions Version 15.0
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Explanation:

A
: Administrator manually programmed the route and update this entry whenever a network
topology changed. It will not consume router ‘s CPU and use fixed memory.
B
: Static route is Private and by default it is not conveyed to other routers as part of an update
process.

Reference:
CCDA Study guide by Damon Merchant .Syngress Press

Incorrect Answers
C:
It is not an advantage
D:
No Route calculations performed for static route .When configuring the static routes one
can specify either the next hop address that the packet will take or the packet to route out
an interface. Both methods work properly.
QUESTION NO: 2
Before any changes are made to a customer network the current network must be
documented.
What should be included in this documentation? (Choose all that apply)

A. Addressing schemes
B. Concerns about the network
C. Protocol analysis

A. Operation at only the lowest layer of the OSI model.
B. Upper-layer protocols existing in a given protocol suite.
C. Operation at the Session layer of the OSI model.
D. Responsibility for path determination and traffic switching. Answer: D
Explanation:

D
: Routing protocols make routers work together. Routers keep track of the networks they are
directly connected to, as well as other routers on the networks in order to forward packets to
foreign networks. A router maintains this info in its routing table and periodically shares
information from that table to other routers on the network. This info is used to determine the
best route for an incoming packet to take its destination.

Reference:

CCDA Study guide by Damon Merchant .Syngress Press Incorrect Answers
A:
It operates on layer 3 of OSI model
B:
They operate on Layer 3 . It will not use upper layer protocols
C:
Routing protocols operates network layer instead of session layer
QUESTION NO: 5
An SNMP-managed network consists of which principal components? (Choose all that
apply)

A. Firewalls
B. Agents
C. Network-management systems
D. Managed devices Answer: B, C, D
Explanation:

B
: Agents are actual software pieces that are run on the managed devices.
C
: They are core in SNMP.An NMS runs a network management application that is
responsible for receiving and presenting all of the information collected from the agents to the
network administrator.
D:
Managed devices are network nodes that run an SNMP software agent and are located on a
SNMP managed network.They generate and store management related info and then provide
this info to a network management system via SNMP.These nodes can be routers,acess
servers,switches etc.

Reference:


customer’s requirements. Evaluate their design and amend your design to include any good
ideas.
Reference:

CCDA Study guide by Damon Merchant .Syngress Press

Incorrect Answers
A:
This is Second step in building a prototype network.
C:
This is First step in building a prototype network
D:
This is Fourth step in building a prototype network
E:
This is Fifth step in building a prototype network
F:
This is Sixth step in building a prototype network
QUESTION NO: 7
A newly hired sales representative is trying to decide upon a WAN solution that will
allow her to communicate with the corporate office located over 500 miles from her
home. She most be able to access the company web server and send e-mail with
attachments throughout her entire 8-hour workday.
Which of the following would be the most cost effective for her to use?

A. ISDN
B. Satellite
C. Leased Line
QUESTION NO: 8
A multi-layer LAN switches data outside of the source network based on information
stored in which location?

A. RIP tables
B. OSPF tables
C. Bridging tables
D. Route processors Answer: D
Explanation:

Using route processors switch the packets faster than fast switching, because it has an
enhanced caching algorithm and switching cache.
Reference:Incorrect Answers
A:
It is used in Router
B:
It is used in Router
C:
It is used in Bridge


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Which two Cisco router services perform network traffic analysis to assist in
documenting a customer’s existing network? (Choose two)

A. NetFlow
B. CDP
C. MRTG
D. NetMon
E. SNMP MIB compiler Answer: A, B
Explanation:

A.
NetFlow services consist of high-performance IP switching features that capture a rich set of
traffic statistics exported from routers and switches while they perform their switching
functions

B
:CDP is a media- and protocol-independent protocol that runs on all Cisco-manufactured
equipment including routers, bridges, access and communication servers, and switches. Using

D. Many implementation steps can be performed simultaneously. Answer: B
Explanation:

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If you specify the related to functionality, scalability, adaptability, Manageability & cost-
effectiveness clearly and elaborately, implementation can be done be less experience engineer

Incorrect Answers
A:
Success is measured by customer. The customer measures success from a business
standpoint
C:
This will not play any role in network design implementation
.

D:
The steps should be carried in an order.
QUESTION NO: 12

. QUESTION NO: 13
You are helping a customer design some enhancements to her network for scalability
and availability. You discover that all routers on her network are Cisco but many of her
switches come from different vendors and are owned by the departments where they are
located. She has an outsourcing agreement for the maintenance of the network
equipment. This outsourced service vendor has implemented CiscoWorks with SAA to
manage the network.
What are three Service Level Management challenges that you would need to address in
your design proposal? (Choose three)
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A. Your customer does not own the switches on the network.
B. The switches and routers come from different vendors.
C. She cannot utilize NetFlow on the network.
D. She has no way to monitor SLA conformance.
E. She does not manage the network with her own staff. QUESTION NO: 15
What is a function of a firewall?

A. Maintains separate routing information for each protocol supported on a router.
B. Provides a security buffer between connected public networks and a private network.
C. Provides user authentication between connected public networks and a private
network.
D. Reduces routing loops by preventing the flow of routing information to the source
where that information was learned. Answer: B
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Explanation:

Firewall Protect network from outside world. It is hardware/software or combination of both
,used to block or permit network traffic,
Reference:Incorrect Answers
A:

A:
RIP V2 sends updates periodically. It converges slowly.
F :
IGRP also sends updates periodically. It converges slowly
QUESTION NO: 17
When designing IPv6 into an existing IPv4 network, which two strategies allow the two
address schemes to coexist to facilitate a migration? (Choose two)

A. Translate one protocol into the other.
B. Encapsulate IPv6 packets into IPv4 packets.
C. Bridge between the IPv6 IPv4 networks.
D. Enable anycast capability in the routing protocol. Answer: A, B
Explanation:

A: Translate One Protocol to another. It will give transparent to the existing user.
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B: The new network IPv6 packets to be encapsulated to IPv4 network to connect to existing
IPv4 users. QUESTION NO: 19
Encryption addresses which network security concern?A. Data integrity
B. User authentication
C. Data authentication
D. Data confidentiality Answer: D
Explanation:

To safeguard sensitive corporate data Encryption is used. Data confidentiality is main
concern.

Incorrect Answers
A,B,C:

These will not play any critical role in network security while performing Encryption
.

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E:
It is for Accounting Management
QUESTION NO: 21
Which two inputs are required to determine the number of circuits needed from a PBX
to a converged network when planning trunk capacity? (Choose two)A. Number of sites
B. Busy hour traffic
C. Average call duration
D. Number of users per site
E. Blocking probability (GoS) Answer: B, E
Explanation:

B
: Measure network traffic load during the busiest hour because this period represents the
maximum traffic load that your network must support. The result gives you a traffic load
measurement commonly referred to as the Busy Hour Traffic (BHT).
E:
Grade of Service (GoS) is defined as the probability that calls will be blocked while
attempting to seize circuits. It is written as P.xx blocking factor or blockage, where xx is the
percentage of calls that are blocked for a traffic system.

Cost of the Project is not presented in Executive summary. It will discuss in Business
requirements

Incorrect Answers
A,B,C,D:
All are included in Executive Summary
. QUESTION NO: 23
According to the Cisco SAFE Architecture, the Enterprise Campus consists of which
modules? (Choose three)

A. Server
B. WAN
C. Corporate Internet
D. Building Distribution
E. Core Answer: A, D, E
Explanation:

Server is Required Enterprise networks. Distribution layer is required for Policies; Core is
mainly connect to Service Providers.


Incorrect Answers
Not E:
BGP could be hierarchical and BGP wouldn't be used in this network design since it is
an exterior gateway protocol.
QUESTION NO: 25
While designing a network for a new client, the IS Manager informs you that the
company is considering a hub and spoke topology with links that will be low bandwidth
and rarely changing routes.
Which of the following would you recommend?

A. Static Routing
B. Dynamic Routing
C. IGRP
D. RIP-2
E. AARP Answer: A
Explanation:

Administrator manually programmed the route and update this entry whenever a network
topology changed. It will not consume router ‘s CPU and use fixed memory.
Static route is Private and by default it is not conveyed to other routers as part of an update
process.

Incorrect Answers
B:

Answer: E
Explanation:

Write a script of the tests and demonstrations that you will carry out. It indicates the design
meets customer requirements, Display the strengths of CISCO equipment you are using, and
show the superiority of design over those of your competitors.
Reference:Incorrect Answers
A:
This is Second step
B:
This is First step
C:
This is Fourth step
D:
This is Fifth step
QUESTION NO: 27
To ensure that productivity remains high and the quantity of user complaints is low,
network response time should be a maximum of?

A. 150 milliseconds
B. 50 milliseconds
C. 25 milliseconds
D. 100 milliseconds



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TestKing wants you to help them plan some improvements to their network to increase
the performance of their customers connections to the ordering system.
What are two additional details about TestKing’s existing network needed for this
analysis? (Choose two)

A. Router ACLs providing security to the servers.
B. Bandwidth of their connection to the Internet.
C. Type of the connections to the retail outlets.
D. Utilization on the servers VLAN.
E. Number of users on the headquarters LAN. Answer: C, D
Explanation:

Type of connection ( Leased line, ISDN,Frame Relay ) determine response time.
Monitor the Server’s speed. Install more processing servers reduce response time

Incorrect Answers
A:
ACL s provide filtering some Packets . it will not provide any role in response time
B:
Bandwidth determine type of link.
E:
Number of users may not play critical role

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engineers that already have the training and experience. The project must be complete
in 6 months when the new inventory system goes online.
The IT manager has concerns about the security of the servers and workstations on the
network when all stores become connected. He doesn’t want any Internet access to or
from the stores. He is depending on you to recommend an effective yet affordable
solution that will protect his system from intruders.
What are three technical goals of AAA Video with regard to this network design
project? (Choose three)

A. Sell merchandise through the E-Commerce site.
B. Real-time posting of sales.
C. Network security measures.
D. Hire two new network engineers.
E. Upgrade to a high-performance LAN.
F. Enhance service offerings. Answer: B, C, E
Explanation:

Technical goals are better network throughput, efficient routing updates and redundancy. Real
time posting of sales provide instant observation of the status. Security provides protect
system from intruders. High performance LAN provides better response time

Incorrect Answers
A,D,E:

QUESTION NO: 31
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You have designed and implemented a SAFE network, but users still complain of
isolated DoS attacks directed at specific hosts in the e-commerce module. The operating
systems on these servers have been patches and all unneeded services have been turned
off, but the problem persists.
What more can you do to reduce the effect of these attacks?

A. Block all TCP traffic to these servers at the Internet firewall.
B. Limit connection rate to these servers at the Internet firewall.
C. Block all UDP traffic to these servers at the Internet firewall.
D. Load-balance between multiple servers running the same applications. Answer: B
Explanation:

Prioritize the user connection to servers and limit the connection rate.

Incorrect Answers
A,C:
one can not block TCP and UDP traffic
. QUESTION NO: 33
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Why would you recommend classless routing protocols for a network?

A. Minimize convergence time.
B. Increase security and availability.
C. Suit the flat structure of the network.
D. Accommodate mixed vendor environment.
E. Support variable length subnet masking. Answer: E
Explanation:

Classless routing protocols carry Variable subnet masking details in Routing updates. This is
Main Advantage compared to classfull routing protocols like RIP & IGRP

Incorrect Answers
A:
It is Second advantage in classless routing protocol
B,C,D:

QUESTION NO: 35

A very large organization has received its IPv6 address range from their Internet
Service Provider and intend to use only IPv6 addresses internally. They will access the
Internet through port address translation (PAT).
What is a requirement for their Domain Name Servers, DNS?

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A. They no longer need DNS servers.
B. Their DNS servers need to support both IPv4 and IPv6 addresses.
C. Their DNS servers need to support only IPv6 addresses.
D. Their DNS servers need to support only IPv4 addresses.
E. They need additional DNS servers in their network just for IPv6 addresses.
F. There are no changed required to their DNS servers. Answer: B
Explanation:

Both are required for support downward compatibility.

Incorrect Answers
A:
DNS servers are required for Name resolution

Which three describe the primary functions of the Access Layer of the campus network
design hierarchy? (Choose three)A. Provides end-user connectivity.
B. Provides route summarization.
C. Provides remote office connectivity.
D. Provides policy-based routing.
E. Connects shared LAN devices.

Answer: A, C, E
Explanation:
Access Layer
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The access layer provides user access to local segments on the network. The access layer is
characterized by switched and shared bandwidth LANs in a campus environment.
Microsegmentation, using LAN switches, provides high bandwidth to workgroups by dividing
collision domains on Ethernet segments and reducing the number of stations capturing the
token on Token Rings LANS. For small office/home office environments, the access layer
provides access for remote sites into the corporate networks using WAN technologies such as
ISDN, Frame Relay, and leased lines. Features such as dial-on-demand and static routing can
be implemented to control costs.

Reference: Designing Cisco Networks (Ciscopress) page 93

E. Customer support improvements
F. Fixture software applications

Answer: A, E
Explanation:
Determining Company Business Goals
Determine the company’s major business goals for the next year and the next fiver years. This
information is important to help you design an internetwork that provides the scalability
required. Research your customer’s industry and competition with knowledge of your
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customer’s business, you can position Cisco technologies and products to help strengthen the
customer’s status in the customer’ own industry.

Reference: Designing Cisco Networks (Ciscopress) page 46
QUESTION NO: 40
Network Performance is defined by which of the following items? (Choose all that apply)

A. Capacity
B. Response time
C. Packet size
D. Utilization

What is the first task that a network designer should perform when documenting the
customer requirements and existing environment of a network design project?

A. Assess the scope of the design project.
B. Identify applications, both planned and installed.
C. Identify the customer’s business constraints.
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D. Assess the customer’s business goals. Answer: C
From exam note the step 1 of determining the customer network requirement should be to
identify the customer business constraint. Determining the customers' business goal is not on
one of the requirement.

QUESTION NO: 43
The state hospital has six clinics spread through the state connected to the main hospital
facility through dedicated links. Doctors practicing in the state have online access to
patient diagnostics, scheduling and billing data in various hospital databases. The
hospital has signed new agreements with three insurance providers and they are
planning to open a new clinic on the opposite side of the state. The new clinic will have a

Steps for Determining a Customer’s network Requirements
Determining a customer’s requirements for a new network design I s one of the most
important tasks in internetwork design. This section provides a step-by-step approach to
determining these requirements. This approach will ensure the network design specifically
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meets the needs of the customer. You might want to take a copy of this outline with you to the
customer’s site and use it as a checklist when requesting information.

Step1. Identify business constraints
Step2. Identify security requirements
Step3. Identify manageability requirements
Step4. Determine application requirements
Step5. Characterize new network traffic
Step6. Identify performance requirements
Step7. Create a customer needs specification document

Reference: Designing Cisco Networks (Ciscopress) page 69
QUESTION NO: 45
Which three modules comprise the Enterprise Composite Network Model? (Choose
three)